Why are snow guards needed, how to choose and install them correctly. Snow guards for corrugated roofing: types and installation instructions. Snow guards are attached.
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It was established that on the roof of a house with an area of only 40 square meters. m can accumulate about 5-8 tons of snow. If there are no snow guards on the roof, then you can imagine what will happen to a person passing by when a huge mass of snow suddenly falls on him. IN in this case the owner of the house may be punished, including criminal liability, since according to Russian legislation, the owner of the property is fully responsible for the surrounding area of his home. In addition, snow melting can cause serious damage to both personal property and that of others.
Types of snow guards: corner, lattice, tubular.
Some don't give special significance anti-collapse devices, worrying that they will spoil the design of the roof, but in fact this opinion is wrong, since such systems, on the contrary, add touches of completeness. Due to the fact that snow guards are safety devices, their installation should never be neglected. Accordingly, many will have the question of how to install snow guards on the roof correctly, because not everyone has the opportunity to hire expensive specialists. Moreover, sometimes the price for their services far exceeds the cost of the device itself. Before proceeding directly to the installation of snow guards, you should understand what types they are divided into.
Types of snow retention systems 
A clear example of how snow retention works.
- Lattice snow retainers are the most popular because they are considered the most effective. This is the best option for both high-rise city buildings and country private estates. An important advantage is that this type of anti-collapse device can be installed on almost any roof, regardless of what roofing material it is covered with. This system is usually made of metal and has the form of a lattice. It is mounted either on suspended or nailed supports.
- On a roof made of metal tiles and corrugated sheets, you can attach plate (corner) snow retainers, which are made of the same material as the coating. This is the most budget option. However, their installation is possible only on a roof whose slope angle does not exceed 30 degrees, otherwise they will be ineffective.
- Snow stops look very similar to hooks. Installation of snow stops is carried out mainly on roofs with soft roofs, or they are used as additional elements that enhance safety in winter period. Nowadays they are made of transparent plastic, which makes them invisible.
- Tubular snow retainers are in no way inferior to lattice ones and are a universal, modern and highly effective device that prevents sudden snow from the roof. This design is a connection of several pipes with special bracket supports. They can be installed on roofs made of corrugated sheets, tiles, and also great option for standing seam roofing.
Thus, it turns out that the best options are two types of anti-fall systems: lattice and tubular.
For some, the first system is suitable, and for others, the second. But in order to install the selected snow guard on the roof, you need to know that there are individual installation rules for each type. If you decide to produce it yourself, you will need to stock up on a standard set of tools that will be suitable for installing both devices. It includes:
- ladder;
- drill;
- screwdriver;
- roulette;
- hammer;
- level.
Rules for installing tubular snow guards 
Installation diagram of a tubular snow retainer.
These anti-collapse systems can be installed either on a roof under construction or on a finished one. They can be located on the roof in a checkerboard pattern and horizontally in one or more lines. They are installed above skylights, entrances or walkways. Under no circumstances should they be placed above the eaves overhang.
Tubular snow guards are attached perpendicular to the sheathing with special brackets, which, in addition to the fastening function, play the role of a distributor of uniform load on the rafter system, which prevents the snow guards from being “torn out” from the roof. The brackets are directly secured with metal screws. They should be located in places where load-bearing walls are located. The distance between the fastenings directly depends on the angle of the roof and the length of the slope. Usually this is about 0.5 m or 4 fastenings per 3 meters. They should be mounted end-to-end, and they must be exactly level.
If the roof slope is long, then such security systems must be installed in several rows. When installing tubular snow guards, rubber washers must be placed between the roofing material and the supports. This measure will ensure tightness in the places where the fasteners pass and prevent leaks. In addition, such washers allow you to adjust the installation plane.
Rules for installing lattice snow guards
Recently, with the advent of tubular systems in private construction, lattice snow retainers are increasingly used only for tiled roof. To install lattice systems, it is necessary to purchase universal either hanging or nailed supports, through which they are placed on the roof. Nail-on supports are attached to the roof sheathing with self-tapping screws, and suspended supports are attached by hanging them on the sheathing using a special metal hook. Unlike other snow guards, lattice systems can be installed directly along the edge of the eaves.
Types of snow guards
Lattice
Lamellar
Installation of a plate snow guard
Snow stopper
Where should it be installed
Snow guards hold a lot of snow
- roof area;
- roofing material;
- tilt angle;
Double row installation
Installation of snow guards
Installation of a tubular snow guard
Lattice snow retainer on the eaves
Snow guards on the roof
Snow stops on soft roofs
Tubular
Instructions for installing flexible tiles, including installation of snow stops:
Lack of snow protection can lead not only to damage roofing And drainage systems, but also cause damage to passers-by and parked cars.
To avoid such trouble, you can install a special snow guard.
The construction and installation of snow guards on the roof is not as complicated a process as it seems at first glance and is accessible even to a beginner in the construction business.
In this article you will learn why snow guards are needed and how to properly install them on the roof of a private house.
A snow retainer is a special design that allows snow not to fall from the roof, that is, the snow does not come off in one layer. Only melt water will flow down the drains. Many people believe that it is not necessary to install such snow clamps, but as practice has shown, this is an important detail that should not be neglected.
There are two main functions of such an important roof structure:
- prevents sharp and sudden snow masses from falling off the roof itself;
- They hold the snow on the roof so that it melts there.
There are several types of such designs, and when choosing them, it is necessary to take into account several important factors:
- direct angle of inclination of the slope;
- how much precipitation (snow) will fall in the area;
- what material is the roof made of?
There are two main types of this design:
- type of snow retainer that allows snow to pass through;
- the second type is impermeable to snow.
The choice of any of the proposed designs depends on personal motives, as well as on the factors mentioned above.
Snow retention in action
It is interesting that in different stores there are various names: snow blocking fences, snow barriers and so on. It is likely that the names characterize the functions of such installations.
For example, snow barriers keep all the snow on the roof (of any volume). And the snow will melt on the house in its natural way. The snow will not melt even in parts. Snow cutters - as the name suggests, this design allows you to separate whole piece snow cover into small pieces.
Some parts fall, others melt directly on the roof surface. The advantage of the design is that the snow does not fall in a continuous layer, which ensures safety for people and also does not damage the roofing.
Of course, snow guards come in different shapes, sizes, and materials of manufacture.. And before choosing, you should focus on how much snow should be retained.
Types of design, advantages
The most popular version of such designs is tubular type.
This unit is simple design from brackets into which two tubes of the same diameter, approximately 15-30 mm, are inserted.
In fact, this type can be considered universal and can be used on any material (metal, tiles, wood, and so on).
And according to professionals, this type of design is considered the most effective. In addition, it can be installed on a roof that has been in use for a long time.
The bracket itself looks like a simple plate with “outlets” for pipes. Often its height is no more than 15 cm. It is attached to the pitched part using a special horizontal stick.
To do this, take special screws that can be attached to metal.
NOTE!
When installing this type of structure, it is necessary to install it along the line of the load-bearing wall. This is necessary so that the load is distributed evenly. The essence of the operation of such a device is the gradual passage of snow (snow will pass between the pipes).
This version of the snow retainer is popular and has received the status of the most promising installation. Also, the tubular structure must be installed exclusively along one line, the option of taking a running start is excluded. If the structure is the color of the roof, then it is almost invisible on the roof.
The process of installing such a system is quite simple:
- mark the holes and drill them with a drill;
- assemble the kit itself, but do not tighten the bolts;
- the existing assembled bracket must be secured through the roof to the sheathing;
- attach the lower part of the structure to the cornice ( at load-bearing wall level);
- Now just connect the components by tightening the bolts.
Tubular type
One more good option salvation from improper snowfall - snow stops (hooks). From the name it is clear that in appearance such structures resemble hooks.
But they can't hold much snow Therefore, it is best to use them in cases where the roof will be cleaned on a regular basis. Often such hooks are mounted on soft bitumen shingles.
Experts advise using this option as an auxiliary option to other, more reliable systems, in places where a lot of snow falls.
Snow retainer - hook
Lattice type snow guard. This type of construction is suitable in places where there is a large amount of snow, since special grille can withstand strong pressure. The snow is retained on the roof, and only melt water flows down.
Install them at a large angle. The efficiency of such an installation is affected by its height (grille height). The color of the grille can be matched to the color of the roof.
The maximum height reaches 20 cm.
Lattice type
The corner version of the snow guard is relevant where there is not much snow. Most often they are mounted on corrugated sheets or metal tiles, because the structure itself is made from these materials.
From the name it is obvious that externally, this type of installation resembles a corner on which there are special fasteners for installation. It is not recommended to install on slopes above 30 degrees.
They are attached directly to the roof itself, you can arrange them randomly, or in one line.
Corner view
Some people prefer to use a wooden log as a way to hold the snow.. The option is not very common. You can find it on different types of roofs, for example, on a shingle roof. It is attached to the roof on large hooks.
L Naturally, the size of the log affects its capabilities, that is, the larger it is, the more snow it can hold. To have the effect of such a design, it is worth attaching it at a distance of 2-3 cm from the roof.
This leads to the fact that a large number of The snow melts and flows down the drain, and most of the sediment remains on the roof and melts in its natural way.
Installing snow guards on the roof with your own hands
How to install snow guards on the roof? If you decide to install snow guards yourself, then you need to consider the type of roof and the amount of rainfall.
After that, buy what you need and begin the installation process itself.
In essence, there is nothing complicated here, you just need to know some rules for installing such a structure.
If you are building a house from scratch, or replacing the roof, immediately think about installing such structures. This will help you save time, effort and nerves.
The installation process itself does not take much time and does not require serious preparation.. It is enough to know a couple of rules and follow the existing algorithm of actions step by step.
Since metal tiles are the most common roofing option, it is worth considering the option of installation on just such a surface. Find out more about installing snow protection on metal tiles here.
CAREFULLY!
Its very design suggests that snow will slide down it very often, and its smooth surface cannot hold snow on its own. During the day it begins to melt and go flat, and this can lead to scratches on the surface of the metal tiles, which in turn will lead to corrosion and damage to the coating.
A roof of this type can accommodate different types of structures:
- tubular;
- lattice;
- corner
Installation of tubular type snow guards:
- first step - outline where exactly the snow retention system will be located;
- costs enhance lathing with a special additional bar;
- an important stage of installation, assembly of the structure, but do not tighten the bolts;
- We begin to fasten the roofing material, where it is necessary to make holes on top for the fastening itself. Such holes should be located only on the lower wave, the one adjacent to the sheathing itself;
- Next comes attaching the structure to the slope using 8*60 mm bolts. Be sure to waterproof the holes using rubber pads. The very step between the bracket depends on two factors, the slope and length. For example, a step of 50 cm is quite enough, even for the most powerful structure;
- The last step of installing the system is pipe insertion. Still have questions? Watch the video below.
Installation of a tubular snow guard
Mounting step
It is important to remember that the system must be mounted only above a load-bearing wall.
Installing a snow guard on other materials
Corrugated sheeting is another popular type of roofing. Like metal tiles, it has 
sensitivity to temperature changes.
It is critically necessary to install a snow guard on such a roof. Read more about installing snow protection under corrugated sheets here.
When the snow melts during the day and freezes in the evening, Ice flakes form which can scratch the material., and this will eventually lead to the fact that the galvanized coating deteriorates and scratches form in those places, as a result of which the material begins to rust.
If you choose such a roofing material, you can also use tubular or lattice snow retainers.
In fact, installing the structure on corrugated sheets is not a very complicated procedure, and almost no different from installation on metal tiles.
Installation of the structure on corrugated sheets:
- the fastening itself is carried out through the material;
- be sure to strengthen the sheathing;
- small holes for fastenings should be reinforced with rubber gaskets;
- installation of the structure should be carried out only on the lower part of the wave of material.
Installation of hooks
In cases where the structure is attached to a ready-made roof covering, you should understand that you will have to disassemble it in order to strengthen the sheathing and it is logical to think about this in advance - during construction.
Installation as an example various types roofs
Hole marking
Useful video
Video instructions for installing a tubular snow guard:
Conclusion
An element such as a snow guard is necessary on the roof of any building, regardless of the style and location. Installing an additional element will allow your roof to maintain its strength and reliability, and will also help ensure the safety of others.
Choosing the right and high-quality construction, carefully study what it is made of. Whatever type of snow guard you choose, it is not necessary to install it around the entire perimeter, since they can be correctly positioned only in in the right places roofs.
It is enough to simply install them in the most dangerous places and this will ensure the efficient functioning of additional elements and at the same time save money spent on roofing equipment. Be careful when making a decision, consult with experts and your choice will be fully justified.
Self-installation of snow guards on the roof #8212; types and order of installation
The safety of a roof is one of its mandatory qualities, along with functionality, durability and beauty. Snow retention systems are designed to ensure this safety. What they are, why they are needed and what they are like - we will tell you about this, and also give advice on how to install snow guards with your own hands.
Why are snow guards on the roof needed?
Russian winters are rich in surprises: sometimes snowfall, sometimes frost, sometimes thaw. And this often leads to emergency situations and injuries. Sudden meltdowns of snow and ice from roofs are especially dangerous. They can cause a lot of trouble: injure bystanders, damage the roof, gutters, climate control equipment(air conditioners), cars parked near the building, break electrical wires.
To prevent these unpleasant and sometimes tragic incidents, it is necessary to install snow retention systems on the roofs of buildings. For Russian reality, they have not yet become a generally recognized phenomenon, although in the West, snow guards are a necessary condition for the commissioning of a house under construction. Without them, it will be impossible to insure the building.
Does this mean that snow retainers are always necessary on any roof? Not at all. You can do without them in cases where the roof has a large slope (more than 60°), snow simply will not linger on it. But the most dangerous slope of the roof is from 20° to 35° - snow guards are necessary on such roofs.
These devices can also perform another function: act as one of the safety elements for a person who clears the roof of snow. If necessary, they will keep a person from falling. This applies most of all to lattice and tubular snow retention systems.
Types of snow guards
Snow retainers can be adapted to a specific type of roof or be universal and used on roofs made of any materials: sheets, rolls, natural tiles.
Tubular
Such systems were first used quite a long time ago in the Alps and Bavaria, and they were called “snow-retaining logs”. Today, such a structure consists of metal pipes in one or two rows and brackets to which the pipes are rigidly attached. In turn, the brackets are fixed to the roof - to the sheathing or rafters. The smaller the distance between the fasteners, the stronger the tubular snow retainer.
Lattice
Made from metal profile, which is assembled in the form of a lattice reinforced with vertical crossbars. This structure is also attached to the roof using brackets.
Angle or plate
They are made of galvanized metal sheets or roofing metal profiles, mounted parallel to the ridge on a roof made of the same material as themselves. Such snow retainers are less durable; they will not be able to retain a large mass of snow. Therefore, they should be installed on roofs with a slope of less than 30° and, best of all, in areas where there is little snow cover.
Metal yokes (snow stop hooks)
The most ineffective snow retainers. They are intended for roofs with minimum slope(up to 15°) and covered with a soft roof, for example roofing felt. Hooks are installed only during the construction or major repair of the roof: as the roofing covering is attached to the sheathing, hooks are installed in one or several rows, or over the entire surface of the roof in a checkerboard pattern.
Features of installation of snow guards
The most durable snow guards - tubular and lattice - are recommended to be installed on roofs on which snow accumulates in large quantities. They are usually installed along the entire perimeter of the roof at the eaves level or slightly higher. These systems can be installed both during construction and during operation.
If the budget is limited, snow retention devices can be installed only in the most dangerous places: above pedestrian paths, entrances, car parks, etc.
Installation should begin from the edge of the eaves, retreating from the edge of the roof about 50 cm. Tubular snow retainers are usually placed along the line of load-bearing walls so that the load on the roof is uniform. The brackets are fastened in such a way that the distance between them is 60-110 cm. They are mounted using long self-tapping screws with rubber seals to achieve a tight seal at the mounting site.
It should be noted that snow guards are not only necessary for safety, but they look great on the roof and give the building architectural completeness. And almost anyone can handle their installation. Just don’t forget about safety precautions: installing snow-retaining structures, clearing the roof of snow and any other work at height must be carried out using a safety rope, a mounting belt, and wearing non-slip shoes.
Last revision: 28.11.
One of the most dangerous manifestations of the spring thaw is, as is known, the unpredictable fall of melting snow from the roofs of buildings, which often leads to injury to bystanders (sometimes with death).
For owners of private houses, it is not difficult to completely remove such a threat or at least reduce it to a minimum - it is enough to manually remove the snow mass that has not yet completely compacted on the roof surface. In addition, you can simply install snow retainers that allow you to keep snow from falling unexpectedly and “bleed” it from the roof surface in small portions.
Snow accumulated in excess can destroy (push through) the roofing covering, and if it comes off too sharply, tear it off or damage the protective layer on the material.
In addition, unexpected snow melting can break wires, as well as damage or disable air conditioners. To correctly install the snow guard on the roof, we recommend that you read this article.
Types of snow guards
There are the following types of snow guards:
Classic snow holders can be made in several versions:
- in the form of brackets fixed to the roof sheathing with double-row metal pipes passed through them. The snow retention capabilities of such a structure can be adjusted by changing the distances between the pipes, as well as between the lower pipe and the roof. By adjusting the mounting step of the brackets, it is possible to change the system parameters according to the permissible load.
- in lattice design, which involves the installation of rigidly fixed brackets with lattice sections attached to them;
- in the form of plate or corner snow retention elements, which are usually mounted on flat roofs made of metal materials(metal tiles, galvanized steel, etc.). Such systems are not designed for increased loads and, as a rule, are ineffective.
Installation
Self-installation of plate (corner) snow retention systems on the roof is possible, but subject to certain conditions. So, to install snow guards on metal tiles, for example, it is necessary that the roof slope angle is no more than 30 °.
Installation of such snow retention elements is carried out in the following order:
- First of all, support brackets (plates with an angle) made of durable metal are installed at selected points on the roof, on top of which a decorative overlay made of roofing material is attached.
- in the case of installing corner-type snow retainers, the latter are attached in two rows along the height of the slope, alternating through one element;
- in this case, the plate elements are attached to each wave of the metal tile, while the corner elements are fixed in each wave along the top row and through the wave - along the bottom row.
When using tubular and lattice snow retainers, their installation is possible both during the construction of the roof and during its operational operation (on the finished roof). In this case, the type of coating used does not matter significantly, since it is possible to attach the brackets to such a surface without much difficulty.
They are installed vertically on the roof plane and fixed to its surface in the most convenient way for you. In the case of fastening brackets along the sheathing joists, depending on the planned dimensions of the structure, their length can range from 300 to 1000 mm.
Note! On large-area slopes, snow guards can be installed in several rows (with a continuous fence or in a checkerboard pattern).
As for slope restrictions, this indicator is not standardized for these fencing samples. In this case, roofs with a slope angle approaching 60 ° are not taken into account, since in this case the snow on the roof is not retained by itself. An interesting conclusion follows from this: you can completely get rid of problems with snow retention if you include in the design a roof with a large slope angle (with permissible wind loads) in advance.
The validity of this conclusion follows from the fact that it is much more convenient to clear the roof of snow when completely flat surface slope without snow catchers placed on it. If the latter are present, on the contrary, removing snow from the slopes should be done as often as possible, which is necessary to remove excess weight load from the roof structure.
Let us note in passing that even in the absence of snow retainers in northern regions In our country, by the end of winter, a layer of snow on roofs with an area of about 80-100 m² can reach an average weight of 8 to 16 tons.
There is one more circumstance that should not be forgotten when installing snow guards yourself. We are talking about use on the roof auxiliary equipment, without which snow removal can turn into an unsafe activity. Such protective devices should include fences (for a building height of more than 6 meters), which are mounted around the perimeter of the roof, as well as specially designed roof ladders or stairs that allow free movement even on heavily snow-covered surfaces. The perforated surface of such ladders does not retain snow and provides good traction with shoes of any type.
When carrying out such work, no one relieves you of your responsibility to comply with safety regulations. Any work at height should be carried out only with a safety harness and shoes that prevent slipping on an icy surface.
Video
Another video about choosing a snow guard:
Photo
How to install snow guards
The roof of a house is very complex design. Various devices and devices may be present here. One of the roof structures is snow retainers. This is optional, but necessary element. The fact is that during a snowy winter a lot of snow can accumulate on the roof, and if this mass suddenly comes off, it can cause a lot of trouble. In this article we will talk about how to install snow guards. Let's talk about their varieties and features.
Types of snow guards
It is imperative to install a snow guard. It will be able to protect you from accidents and litigation in the event of damage to someone else’s property during an avalanche. Which one to choose? What types of snow guards are available for sale?
The most common option is lattice structures. They are made of metal and can be installed on almost any type of roof. The gratings are quite effective and they are, as a rule, used to protect against snow masses falling into multi-storey buildings. Such structures can be mounted either by nailing or by hanging.
Plate-type snow retainers can be installed on metal tiles and profiled sheets.
Such structures do not work well if the roof slope is more than 30°.
Plate structures are made from the same material as the roofing and are relatively inexpensive.
On the roof of soft material snow stops can be installed. They have a hook-shaped design. Very often, such snow guards are installed as additional protection. Thanks to the use modern technologies snow stops are made of transparent material, which makes them less noticeable.
Another universal (independent of roof type) snow retainer is a tubular one. It is a bracket with attached tubes. This design retains snow no worse than a lattice structure.
Among the variety of snow guard designs, the most common are lattice and tubular. They are quite effective and great for all types of roofing. It is about installing such products with our own hands that we will talk about.
Where should it be installed
Before you begin installing snow guards, you need to decide on their installation location. Installation can be carried out both during the construction of the roof and at existing facilities.
The number and location of installation of snow guards is determined based on several factors. Namely:
- roof area;
- roofing material;
- tilt angle;
- amount of precipitation in winter.
If the roof area is large, and a significant amount of snow falls, then there should be a lot of snow retainers. They can be installed in several rows, in a checkerboard pattern, or only in hazardous areas. According to the recommendations of experts, when the length of the slope is more than five meters, snow retention devices should be installed in two rows. In other cases, depending on the amount of precipitation.
Also, the number of devices will depend on the type of roof. Metal tiles and corrugated sheets, popular today, are smooth materials. With slight heating (for example, on a sunny day), snow will actively melt off such a roof. Therefore, it is on such a roof that snow retainers are simply necessary.
As a rule, snow retention devices are installed above skylights, walkways, entrances and other areas where the fall of a large mass of snow can harm property or human health.
During installation, it is necessary to retreat from the cornice at least 50 cm. The only exception can be the installation of lattice structures, and then only on condition that the cornice is formed rafter legs roofs.
Installation of snow guards
Snow guards in the form of gratings have recently begun to give way to tubular structures. But they are still widely used as before. It is lattice products that can often be found on tile roofs.
The installation principle of both types is the same. The only thing is that lattice structures can be installed directly on the roof eaves.
Installation occurs in the following sequence:
- we mark the future location of the structures;
- in these places the sheathing is reinforced with additional bars;
- We assemble snow guards. There is no need to tighten the bolts tightly yet;
- We drill holes in the roofing material for fastenings. If the covering is made of metal tiles, then it must be fastened in the lower wave, which is adjacent to the sheathing;
- We mount the bracket to the sheathing. In this case, a certain step must be followed. It will depend on the slope of the slope. The larger it is, the smaller the installation step of the brackets should be. As a rule, a distance of 50 cm is enough even for the steepest slope. Fastening is done using bolts, with the installation of additional rubber seals;
- Now we attach the snow retainer structures themselves to the brackets.
In this way, you can install snow retention devices on almost any type of roof.
The installation of snow retainers on a soft roof is slightly different.
If the slope of the slope is less than 15°, then the installation of such devices is generally not advisable. Also, the formation of an “avalanche” is unlikely if there is a coating of stone chips. That is why powerful snow stoppers are not installed on soft roofs; the presence of snow stoppers is quite sufficient.
Such devices are arranged in a checkerboard pattern. The installation itself is carried out simple self-tapping screws. In this case, there is no need to strengthen the sheathing. Firstly, snow stops weigh little. And secondly, the soft roof is laid on a continuous type of sheathing. If the slope of the slope is large, then you can install both tubular and lattice snow retainers.
During installation similar designs on a soft roof, there is always a risk of damaging the seal. Therefore, the mounting holes must be carefully sealed. This can be done using rubber gaskets or any sealant.
Video
Installation instructions for tubular snow guards:
Instructions for installing flexible tiles, including installation of snow stops.
In winter, when there is a lot of precipitation, layers of snow accumulate on the roofs, which brings a lot of inconvenience to home owners. A snow retention system is the best way to solve the problem. It prevents the formation of large snow caps and ice build-ups by removing them in a timely manner. Installing snow guards will not only ensure complete safety of people, but will also protect the roof from damage caused by ice, which appears as a result of constant melting and freezing snow masses.
Just a few years ago, snow guards were not very popular among private developers and service organizations, but nowadays, in conditions of heavy workload utilities who do not have time to remove snow from the roofs of their houses in time, this system acts as their reliable assistant. With the advent of such devices, the number of injuries caused by collapses of snow and ice blocks has significantly decreased. Since the process of snow melting from the roof is controlled by a snow retention device, you do not have to worry about the roof systems breaking down. Thus, as the weather gets warmer, gutters often fail due to icicles forming on them, and the coating is scratched and torn under the influence of impressive layers of ice. For the same reason in constant repairs Air conditioners installed on the facades of buildings are also needed.
Snow guards protect people from falling large amounts of snow and ice and protect the roof covering from severe wear and tear.
Snow retainers are a system of devices that prevent large volumes of snow from falling off the roof by dividing the mass into small parts that are less dangerous when falling down.
Being quite easy-to-use devices, snow guards are equipped with a number of functions:
Like any structure, snow retention systems differ in shape, size, material, as well as the level of strength and functionality. The main criterion when choosing a device is the maximum volume of snow retained.
Tubular design
The tubular snow retainer is designed quite simply - two brackets with a pair of pipes with a diameter of no more than 30 mm attached between them. The height of the product reaches 15 cm. On each bracket, in addition to holes for pipes, there is a horizontal shelf, which is attached to the roof slope using several screws measuring 8x60 mm. The appearance of the bracket may vary depending on what roofing material is laid on the roof. Installation options should be selected for each system separately.
Tubular snow guards are best installed on roofs with a slope of up to 60 degrees.
The strength level of tubular snow guards depends on the distance between the down pipe and the roof surface, as well as the size of the gap between the pipes. The most stable system is considered to be one in which the value of the first parameter is no more than 3 cm, and the second - up to 10 cm.
Installation of tubular snow guards is advisable on roofs with an inclination angle of up to 60 degrees. This is due to the fact that snow layers exert great pressure on the surface, while a significant slope of the roof will provoke frequent movement of snow. If the angle of the roof structure exceeds 60 degrees, then precipitation will naturally roll off it on its own without snow retainers.
The main purpose of tubular snow retainers is to separate the entire mass of snow into small layers for their subsequent removal to the ground. Thanks to its sophisticated separation system and the ability to hold large volumes of snow, this device is the most reliable for use on residential buildings and industrial buildings.
Tubular snow guards can hold and separate large layers of snow
Tubular structures for retaining and removing snow can be installed on tiles, corrugated sheets, and any sheet and roll roofing. The structures are installed around the perimeter of the entire roof of the house in one row without gaps. It is not allowed to fasten the system in a chaotic manner. For significant volumes of snow, several rows of tubular systems can be installed 2–3 meters apart.
The bottom row of snow supports is installed so that the load-bearing wall is underneath it. To do this, it is enough to fix the system at a distance of 50 cm from the cornice. To maintain the overall design of the roof and hide its additional element as much as possible, it is recommended to select snow guards in the same color as the roof covering. As for the material used in the production of products, galvanized steel is usually taken as the basis, and high-quality paint is used for decoration. The result is durable parts that can resist corrosion and other negative factors.
Lattice snow guards
This type of snow retainer is presented in the form of a vertical grid attached to holding brackets. All parts are made from durable galvanized steel and paint of various colors, so choosing a structure to match the roofing is not difficult. The only criterion that can change in the presented system is the height of the grating. The smallest specimens reach no more than 5 cm, the tallest - 20 cm. Depending on the size, the snow retainer can cope with different volumes of snow cover.
The lattice snow retainer can cope with different volumes of snow mass depending on its height
Powerful steel structure can hold a heavy block of snow with an ice crust on the roof, while only melt water will seep down. Installation of such devices is carried out on roofs with a strong slope to reliably retain a large volume of snow. The system is successfully used on roofs with any covering, the main thing is to choose the right fasteners.
Constant exposure to large thicknesses of snow and ice negatively affects the grille - it begins to sag and subsequently cannot fully perform its functions. Based on this, in regions where there is a large amount of precipitation in winter, it is recommended to install tubular snow guards. When purchasing a system, please pay attention Special attention on the quality of the parts themselves, for example, the brackets should be much more massive than the lattice part.
In addition to the standard lattice system, there is a modification in which longitudinal pipes are welded to the lattice to strengthen the support.
Lattice snow guards are installed on roofs with a large angle of inclination
Lattice products are mounted in one row along the entire roof eaves. If the slope is less than 5 meters, then only this system will be sufficient; for longer lengths, additional snow cutters of a different type will be needed.
Angle (plate) snow guards
Small layers of snow falling off the roof are not so dangerous, but they can also cause damage. To prevent them, it is recommended to use corner snow guards. Externally, the structure looks like a metal corner attached to the surface using shelves. Such a system will look good on metal coverings - metal tiles or corrugated sheets.
Since plate snow impellers are not designed to hold large volumes of snow, their height does not exceed 4–6 cm, while the permissible roof slope can be no more than 30 degrees. To avoid accidents due to snow drift, even with such restraints, the roof must be cleaned regularly.
Plate devices are fixed on top of the roofing in the upper waves of the corresponding material in a checkerboard pattern. Minimal amount rows - 2, the gap from one row to another is 50–100 cm.
Plate snow impellers are attached along the waves metal sheet using roofing screws
Point (bar) snow retainers
Externally, such products resemble hooks and cannot be used as independent system protection against snow melting, but they are widely used as additional elements of a lattice or tubular system.
Soft roofing is the only covering that allows the installation of roof yoke retainers only. This fact is due to the fact that this type of coating has a granular coating that provides the surface with sufficient roughness. Small layers of snow are well retained on such a roof due to friction. The rope stops additionally support the snow mass and cut it into small layers.
Point stops can be installed as an independent snow retention system only on soft roofs
Fastening point devices is somewhat different from working with other structures in that it is carried out together with laying the roofing material in a checkerboard pattern with an interval of 50–70 cm. A long plate with a welded triangular part is fixed on the frame sheathing, and then covered with a covering sheet. This installation system allows you to hide the installation locations of fasteners and prevents leaks.
The installation of snow guards should be done at the stage of installation of the roofing. In exceptional cases, it is allowed to mount the system not over the entire roof, but only over the locations of any objects: sidewalks, parking lots, attics or balconies. It should be taken into account that when it melts, the snow cap will not fall straight down, but with a deviation of 0.5–1.5 m from the roof, depending on its angle of inclination.
Regardless of the chosen system, it is important to ensure that the installation is not carried out on the eaves itself, but 50–80 cm higher from it. The eaves overhang should in no case be used as a basis for fastening, except when rafter legs are used to create it.
Installing snow-retaining devices on the cornice or very close to it will sooner or later lead to a collapse roofing elements along with a layer of snow. Cornice parts are simply not designed for heavy loads.
The cost of a snow guard depends on its type, size and material from which it is made. Such a purchase can cost from 1.5 to several hundred dollars per product.
Installing snow guards slightly increases the overall cost of the roof, and their absence can cause significant damage
Corrugated sheeting, just like metal tiles, has a smooth surface that is sensitive to mechanical damage, so the need for snow retention devices on such a roof is beyond doubt. Otherwise, during melting, snow and ice will begin to move along the roof, thereby damaging the paint on the galvanized material, which inevitably leads to the appearance of rust.
The snow guard brackets are fastened in a wave
The best option for a roof with a metal coating would be to install tubular, lattice or plate systems. The first two options are very popular.
Requirements for installing snow retention devices:
The snow retainer brackets are screwed to the sheathing along every second wave of the corrugated sheet.
When working with a ready-made roofing structure It is recommended to disassemble it in those places where reinforcement of the sheathing is required.
Corner and point devices, being surface means of protection, do not require additional measures to strengthen the frame, and are attached directly to the roofing, but fastening element For reliability, you need to screw it to the wooden sheathing.
Video: do-it-yourself installation of snow guards on a roof made of corrugated sheets
Metal roofing, being one of the most common structures in construction, has smooth surface, on which snow layers cannot physically linger. The ability of the material to quickly heat up and cool down provokes the constant melting of snow in daytime days and freezing in the evening and at night. Given these factors, it is simply impossible to refuse to install snow guards.
The roofs of residential buildings made of metal tiles, depending on the slope angle of the structure, can have a system of tubular, lattice and even plate snow impellers. Last option provides for a slight slope of the base, the other two systems, being the most durable and reliable, can be installed at the choice of the home owner.
Snow guards are also attached to metal tiles using rubber spacers.
Tubular and lattice snow retention devices are attached to the roofing according to the following scheme:
When assembling, it is important to make sure that the snow retention parts are located strictly above load-bearing beam. If the structure is assembled above the skylights, then the sheathing needs to be strengthened. Long slopes (more than 5.5 m) are equipped with at least two rows of devices. Some brackets are equipped with special elements that simplify the work; for example, having parts with special protrusions, you can do without reinforcing the sheathing.
Video: installation of snow cutters on metal tiles
Think about the need to install such modern design, as a snow retainer, follows already at the stage of building a house. What are the main factors that are important to consider:
- The fundamental point is the type of roof. Depending on the selected material for the roof, the option of the snow retention system is determined. If the house is with metal roof, for example, from corrugated sheets or metal tiles, then additional elements to it must be made of the same material. A tubular system would be an excellent choice in this situation.
- An important parameter for selection will be the amount of precipitation falling in the region of residence over the entire winter.
- Despite the fact that most owners of private houses try to choose a standard roof design, the slope angle for each building may be different, and this must also be taken into account when choosing.
For greater reliability, different types of snow holders can be combined
When purchasing snow guards, experts recommend following three key points:
- Possibility of hermetically sealed fastening to the roof base.
- Compliance maximum level load provided for the snow retainer, the height of the snow cover in your region.
- Strength of parts and connections of the structure.
Each of the systems that allows you to protect people from large amounts of snow falling off the roof has its own characteristics, but there are several aspects that are characteristic of the installation of any of them. Before you begin, you must:
- In the places where snow impellers are planned to be placed, create an additional reinforcing frame for the sheathing.
- The very first row of the structure should be fastened no closer than 50 cm from the roof eaves.
- Pay attention to the correct location of the products - strictly parallel to the edge of the roof.
Snow guards should be installed at a distance of at least half a meter from the eaves strictly parallel to the overhang line
- Choose the correct arrangement of snow retention devices: in a checkerboard pattern (hook, plate) or in one line (lattice, tubular).
- Calculate required amount snow guards: on large roofs It is advisable to install the system in several rows with a step of 40–50 cm for greater protection against sliding of the snow mass.
If the roof is large and complex, it is necessary to install several rows of snow guards to ensure better snow shedding and protection of roof structural elements
On roofs with a slope of more than 60 degrees, snow practically does not stay, so installing snow guards will be ineffective.
When choosing snow guards, you need to take into account the snow load. However, this is difficult to do, since it is impossible to determine in advance how much snow will fall in a given year. However, there is still a formula that allows you to do this approximately: Q = G*s, where G is the weight of snow per 1 m 2 of roof (this value can be found in a special table), s is a coefficient that depends on the slope of the roof (1 - slope less than 25 degrees, 0.7 - slope from 25 to 60 degrees).
Table: specific gravity of snow for different areas
Winter time is a serious test of strength for any type of roof. Snow masses accumulate, form “caps” and, under the influence of temperature changes, turn into ice blocks and icicles. However, over time, the snow begins to melt, this process is influenced by climatic features and the heat emanating from the roof.
During this period, the convergence of snow masses poses a great danger, primarily to the life and health of people. The integrity of the property is a secondary point, but no less important.
Proper installation snow retainers on the roof made of metal tiles and corrugated sheets ensure crushing of snow layers and their simultaneous retention. Subsequently, the accumulated sediment comes off the roofing in the form of small fragments, which is safe for others.
Types of snow guards and their purpose
Modern design solutions for snow retention systems for roofs are divided into two types - throughput and barrier. Installation of snow guards on metal tiles, as well as on other types of roofing, must be carried out in accordance with individual markings. Areas of expected large accumulations of snow masses are calculated taking into account the geometry of the roof; in these places, snow barriers are installed in two rows.
By purpose
Barrier systems are more suitable for regions where precipitation is not active. Thus, the accumulated snow masses linger on the roof and melt there under the influence of sunlight.
Throughput analogues, as mentioned above, ensure the separation (crushing) of snow crusts and icy layers into separate small parts. As practice shows, it is through-pass snow retention devices that are most in demand.
By structure and modification
In its own way technical modification These designs are divided into lattice and tubular options.
Types of snow guards:
- lattice;
- tubular;
- log shape;
- corner;
- yoke (spot snow retainer for the roof), hooks.
In addition to their direct purpose, snow barriers facilitate the process of removing snow from the roof. When carrying out roofing work or during heavy winds, they keep fragments and parts of the roof from falling. They also minimize the risk of damage to the building façade from falling icicles and snow, and protect gutters from debris. The type of roof, type of roof covering and climate characteristics determine the choice of snow guards.
How to install snow guards on the roof of various types
Tubular and lattice structures are considered universal. Snow retention on a roof made of metal tiles, corrugated sheets, and rolled materials is equally possible on absolutely all types of roofing. The structures are reliable and can be installed on roofs with a large angle of inclination.
Lattice and tubular
Such snow barriers are able to withstand significant weight of snow masses. A big plus is the possibility of installing these structures both on a new roof, during construction, and on an already in use one. The specifics of fastening involve installing brackets through the outer covering to the roof sheathing - using the nail-on installation method.
The length of the brackets varies from 30 cm to one and a half meters; if extension is necessary, the pipes are joined. Lattice analogues are extended by adding sections of the required length. This type of snow barriers is mounted either in one row or in a checkerboard pattern.
Angle and plate snow guards for the roof photo
These roof snow guards are optimally suited for mounting on hard types of roofing. This can be metal tiles, corrugated sheets, galvanized sheets. The structure is fastened both during the installation of a new roof and on an existing one.
Snow retention on a corrugated roof is made by attaching it to the upper wave roofing sheet. Therefore, such structures are designed for light snow loads and are recommended for installation in regions with temperate climates.
This type of snow guards is a type of plate analogues; they are installed using special roofing bolts with a rubber gasket. In most cases, the structure is sold already equipped with all the necessary parts, gaskets and screws.
It is worth noting that corner and plate snow retainers are not very durable and cannot hold a large weight of snow masses. If the angle of the roof (slope) is less than 30 degrees, then you should not install them.
Log snow barriers are the oldest method of retaining snow masses on the roof. It is rarely used these days, but is still popular among lovers of the distinctive design and architectural style reminiscent of Bavarian and Alpine buildings.
This type of snow guards is reliable and high efficiency, since a powerful pipe (or log) is capable of holding very large loads. Today it is rare to find a wooden beam acting as a barrier; metal pipes with a diameter of about 140 mm are most often used. Supports for log holders are made of steel sheets and have a simple fastening system.
Snow stoppers
As for snow retaining yokes (snow stoppers), they are not particularly reliable and often act as auxiliary elements. They interact with any snow-retaining structures and are installed at a distance of at least 80 cm from the edge of the roof.
When installing snow guards on the roof with your own hands, you should observe extreme caution and safety rules, and place them evenly over the entire area of the roof slope. Yokes provide a kind of point retention of snow masses, are made by stamping and are suitable exclusively for metal tile and corrugated sheeting.
Separately, it is worth mentioning safety precautions. Installing snow guards on a corrugated roof is a responsible and traumatic process. Special ladders and roof ladders with perforated surfaces will make it easier to move even on an icy roof and significantly reduce the risk of falling.
Installation safety precautions
When installing snow guards on a roof made of corrugated sheets, metal tiles or other material, take into account the slip factor, since it is always present. The entire work process takes place at height, so be sure to take care of the appropriate protective guard and fastening.
When installing snow guards, for safety use:
- fastening belts;
- safety rope;
- anchor lines along the edges (temporary fastening stops for installing a cable and as protection against slipping in case of a fall);
- special shoes with non-slip soles.
The optimal solution will be the installation of snow barriers during roofing or major repairs. It is best to decide on the type of retainers and purchase components for them together with the purchase of roofing materials. Pay attention to high-quality and proven designs from Borge (Sweden), Orima (Finland), Ruf (Russia).
In turn, snow guards for metal tiles and other roofing materials from domestic companies “Steel Partner” and “Metal Profile” can be made in any color you prefer. As already mentioned, the installation of these structures is allowed at any stage of the roof’s operation, but it is most convenient to do this during the initial installation or repair work.
First of all, the choice of materials should be based on climatic factors in the region, as well as individual characteristics a separate roof. The longer the winter and the more generous the precipitation, the more reliable the snow barrier system should be.
Bottom line
If the amount of snow is insignificant, and it has time to melt before the next snowfall, then it is enough to install corner barriers. Well, if winter in your region feels like a full-fledged mistress, then reliable mesh and tubular systems will successfully cope with icicles, icy crust and snow debris on the roof. In addition, this type of design guarantees comfortable and safe manual work to remove snow masses.
The installation of snow retention systems will be relevant both when repairing an old roof and when constructing a new one. The presence of snow guards will provide the necessary safety and give the overall appearance of the house architectural completeness.
The roof of a house is a very complex structure. Various devices and devices may be present here. One of the roof structures is snow retainers. This is an optional but necessary element. The fact is that during a snowy winter a lot of snow can accumulate on the roof, and if this mass suddenly comes off, it can cause a lot of trouble. In this article we will talk about how to install snow guards. Let's talk about their varieties and features.
Types of snow guards
It is imperative to install a snow guard. It will be able to protect you from accidents and litigation in the event of damage to someone else’s property during an avalanche. Which one to choose? What types of snow guards are available for sale?
The most common option is lattice structures. They are made of metal and can be installed on almost any type of roof. The gratings are quite effective and they are, as a rule, used to protect against snow melting in multi-storey buildings. Such structures can be mounted either by nailing or by hanging.
Plate-type snow retainers can be installed on metal tiles and profiled sheets.
Such structures do not work well if the roof slope is more than 30°.
Plate structures are made from the same material as the roofing and are relatively inexpensive.
Snow stops can be mounted on a roof made of soft material. They have a hook-shaped design. Very often, such snow guards are installed as additional protection. Thanks to the use of modern technologies, snow stops are made of transparent material, which makes them less noticeable.
Another universal (independent of roof type) snow retainer is a tubular one. It is a bracket with attached tubes. This design retains snow no worse than a lattice structure.
Among the variety of snow guard designs, the most common are lattice and tubular. They are quite effective and great for all types of roofing. It is about installing such products with our own hands that we will talk about.
Where should it be installed
Before you begin installing snow guards, you need to decide on their installation location. Installation can be carried out both during the construction of the roof and at existing facilities.
The number and location of installation of snow guards is determined based on several factors. Namely:
- roof area;
- roofing material;
- tilt angle;
- amount of precipitation in winter.
If the roof area is large, and a significant amount of snow falls, then there should be a lot of snow retainers. They can be installed in several rows, in a checkerboard pattern, or only in hazardous areas. According to the recommendations of experts, when the length of the slope is more than five meters, snow retention devices should be installed in two rows. In other cases, depending on the amount of precipitation.
Also, the number of devices will depend on the type of roof. Popular today, corrugated sheets are a smooth material. With slight heating (for example, on a sunny day), snow will actively melt off such a roof. Therefore, it is on such a roof that snow retainers are simply necessary.
As a rule, snow retention devices are installed above skylights, walkways, entrances and other areas where the fall of a large mass of snow can harm property or human health.
During installation, it is necessary to retreat from the eaves at least 50 cm. The only exception can be the installation of lattice structures, and then provided that the eaves are formed by the roof rafters.
Installation of snow guards
Snow guards in the form of gratings have recently begun to give way to tubular structures. But they are still widely used as before. It is lattice products that can often be found on tile roofs.
The installation principle of both types is the same. The only thing is that lattice structures can be installed directly on the roof eaves.
Installation occurs in the following sequence:
- we mark the future location of the structures;
- in these places the sheathing is reinforced with additional bars;
- We assemble snow guards. There is no need to tighten the bolts tightly yet;
- We drill holes in the roofing material for fastenings. If the covering is made of metal tiles, then it must be fastened in the lower wave, which is adjacent to the sheathing;
- We mount the bracket to the sheathing. In this case, a certain step must be followed. It will depend on the slope of the slope. The larger it is, the smaller the installation step of the brackets should be. As a rule, a distance of 50 cm is enough even for the steepest slope. Fastening is done using bolts, with the installation of additional rubber seals;
- Now we attach the snow retainer structures themselves to the brackets.
In this way, you can install snow retention devices on almost any type of roof.
The installation of snow retainers on a soft roof is slightly different.
If the slope of the slope is less than 15°, then the installation of such devices is generally not advisable. Also, the formation of an “avalanche” is unlikely if there is a coating of stone chips. That is why powerful snow stoppers are not installed on soft roofs; the presence of snow stoppers is quite sufficient.
Such devices are arranged in a checkerboard pattern. The installation itself is done with simple self-tapping screws. In this case, there is no need to strengthen the sheathing. Firstly, snow stops weigh little. And secondly, the soft roof is laid on a continuous type of sheathing. If the slope of the slope is large, then you can install both tubular and lattice snow retainers.
When installing such structures on a soft roof, there is always a risk of damaging the seal. Therefore, the mounting holes must be carefully sealed. This can be done using rubber gaskets or any sealant.
Video
Installation instructions for tubular snow guards:
Instructions for installing flexible tiles, including installation of snow stops:
According to current current standards, the lion's part of the territory of Russia is located in a zone where in winter the weight of snow cover ranges from 180 to 320 kilograms per square meter of roof, which on average is about 250 kilograms. And, as you guessed, we are talking specifically about one square meter, and if we take the roof small house, approximately 80 square meters, then the snow cap on it can reach 20 tons!
Now do you realize how dangerous it is for snow to suddenly fall off such a roof? Therefore, in order to prevent the melting of snow masses, snow retainers are necessary for roofing made of corrugated sheets - as the most slippery of all existing ones. And correctly selected snow stops and snow barriers will not only reduce the likelihood negative consequences all this, but will completely solve the problem. Shall we figure it out?
Snow, ice and roof made of modern metal profiles
It is absolutely normal for snow to accumulate on the roof over the winter and melt in the spring. And it’s not normal if it breaks down on someone’s head. It is not for nothing that, for example, most roofs in Sweden are painted dark, due to which the roof quickly heats up from the spring sun and the snow immediately melts, being held back by the snow guards required in that country.
That’s why in the spring it easily removes itself from the roof, slowly flowing into the drain: neatly, quickly, and in small parts. Believe me, this is not at all the same situation when huge layers of snow simply fall off under their own weight, despite the fact that the average roofing covering is not always as slippery as corrugated sheeting.
If no snow retainer is installed on such a roof, then things are bad. The slip coefficient of modern metal tiles and seam roofing is especially high, as is the case with all types of corrugated sheeting. Therefore, on roofs with a slope of 25 degrees or more, snow does not linger at all. After all, in the spring, compacted snow is heated by the sun through the metal itself, or by heat from the interior, and an avalanche flies down through the water lubricant, and this is a much more dangerous situation. After all, it is precisely such uncontrolled falling of snow during a thaw that can lead to injury to people and damage to property.
In addition, if in one section of the roof a heavy snow mass has gone down, but the main layer of snow still remains in other places, the rafters will become skewed and the roof covering will deform. And now the snow pressure, in other words, the snow load, which we usually carefully calculate, will already be uneven.
In details:
Functions of modern snow retention systems
A properly selected snow retainer for a slippery corrugated roof can save not only property, but even human life. But in this matter you cannot stop at the first solution you come across - for each house it must be different, based on the type and parameters of the roof itself, the average snow and wind loads of a certain region.
Let's list the main functions of snow guards:
- Protection individual elements roofing and gutters.
- Protecting passing people and animals from snow and icicles.
- Protection of the roof system from deformation under the weight of snow masses.
- Protection of the foundation from melt water.
- Protection of house extensions from avalanche-like destructive snow.
Standard snow retainers are systems of gratings, tubes or corners that are installed around the entire perimeter of the roof, about a meter from its edge. Moreover, on complex and long roof slopes Snow guards can even be installed in several tiers.
We select the type of snow guard according to its shape and purpose
Today, the most snow retainers are produced in terms of shape, design and purpose. And one wave behaves decently in some conditions, serving faithfully for decades, while others, under the same parameters, bend and break after the first winter. This is because you need to choose a snow retention system for a corrugated roof, which is characterized by a special speed of snow movement, wisely.
Corner or plate snow barriers
Corner snow guards are the simplest and most popular option for roof snow protection. These are small metal strips with two stops, protected by colored polymer. Therefore, these roofing elements are easy to match overall color the coating itself.
Usually, the general kit for such snow retainers includes standard-sized roofing screws, up to 60 pieces, as well as plugs, seals and capercaillie. But note to yourself that different manufacturers The quality of these components also differs.
Corner snow retainers are good because during the melting period the snow does not linger near them and does not form ice layers in these places, but carefully moves along the roof into the gutter. But let us note that today not everyone is happy with this type of snow retention, because at some point the snow becomes higher than such slats and sometimes breaks them off. The result is repairs and loss of the fresh appearance of the new roof. After all main drawback of snow barriers is the limited amount of snow they can stop. Usually it is equal to the height of the corners, but unfortunately not always.
Kits of ready-made corner snow guards include: support element, decorative linings made of roofing material and fastening elements. Additionally must must go lining material, which for corner models rests with its flat part towards the direction of the ridge, and for plate models - bottom towards the slope. The barrier is connected to the corner and the roofing material at the same time.
Metal spot snow guards
But modern point snow retainers have an advantage over corner ones. They are made of steel with a polymer coating, in the form of a horseshoe, which follows the shape of the end on the crest of a wave. Such snow retainers are used only on roofs made of metal tiles and corrugated sheets.
These are often made with your own hands, bending loops from small thin strips. And this makes sense, because point snow retainers each hold only a small layer of snow, and not the entire cap at once, which is why there is almost no risk of the fastenings breaking off. In essence, such snow retainers retard the melting of snow more than stop it altogether, helping the corrugated sheeting not to be as slippery as it is.
And also, it is most convenient to work on a roof made of corrugated sheets with point snow retainers:
Snow stops made of polycarbonate
Many people are also attracted by modern snow guards made of polycarbonate. Their main advantage is that they do not damage the roof covering during installation and do not break the roof itself. Polycarbonate snow guards are easy to install; there is no need to prepare the surface or install additional structures under the roofing in order to somehow secure them. For installation, you will only need roofing screws - these are self-tapping screws with a washer, or special glue.
Another plus is that such snow retainers are easiest to calculate for roofing made of corrugated sheets. The shape and size allow them to be used for almost any form of roofing. After all, if we compare them with metal snow guards, the length of which is set at the factory, polycarbonate ones can be installed according to any parameters and on any slope.
And finally, the transparent and lightweight material is not noticeable on the roof, so it will never spoil complex design projects with its presence. Just a few pieces are needed to protect ventilation pipes, antennas, skylights. After all, such snow guards are easy to install, even one at a time!
Tubular snow guards
Tubular snow catchers are indispensable for complex roofs and slippery roofing coverings, where modern corrugated sheets take almost the first place in the rating. These universal designs They delight with a wide variety of shapes of fasteners, which are easy to match to any width and height of corrugated sheeting, which cannot be said about other types.
And here is another type of tubular snow guards:
The only disadvantage of such snow guards is that they are usually expensive. whereas the roof is often covered with corrugated sheeting due to the availability of this material. So is it worth betting on cheap roof expensive security system? Certainly! For your own safety.
Lattice snow retention systems
Lattice snow retainers are great for corrugated roofing, and at the same time they also serve as a certain decoration appearance roofs.
Lattice snow retainers are very similar to tubular ones, only here, instead of pipes, a special lattice serves as a supporting element. This grille is mounted on brackets in the same way as the pipes. Functionally, these snow retainers are more effective, since they have an increased area of resistance to snow, but the load on them, naturally, is therefore greater. That is why such snow retainers are attached to specially reinforced roof sheathing. Most often they can be seen on industrial and large facilities, and less often on the roofs of private houses.
Lattice snow retainers have brackets, between which there are sections in the form of frames made of angles or pipes, with vertical cross members. Such snow guards can be easily lengthened or shortened by installing additional sections. But keep in mind: increased sizes of the gratings themselves always increase the volume of retained snow. Therefore, it is not uncommon for such snow retainers to simply bend and break, especially on roofs made of corrugated sheets, where by spring the snow generally slides all the way to the edge of the roof. And the installation of lattice snow guards is more complicated than that of point or corner ones.
We calculate the installation and draw up a plan
The norms and rules for installing snow guards are regulated by SNiP 17.133.30.20.11 - this is the edition of SNiP 2.26.76. According to it, on the roofs of buildings with a slope of 5% and external drainage, snow retention systems are required, which must be attached to the roof of the purlins and to load-bearing structures. Here are visual examples of installation diagrams for these roofing elements:
The number of snow retainers must be calculated separately in each specific situation. Sometimes they are placed only in potentially dangerous places, for example, above the entrance doors or a children's playground, and sometimes there is a need to install them absolutely over the entire roof in order to avoid uneven distribution of the load on it due to partial snow melting.
We attach snow guards to corrugated sheets
On a corrugated roof, snow guards are attached in different ways. So, plate ones are always in a wave, corner ones are in a wave along the upper edge, the rest are through one wave for the lower edge. The installation of snow guards on such a roof occurs by attaching them to the roof structure, namely, to the load-bearing parts through special supports and brackets.
Ideally, such installation should only be carried out by qualified workers who have access to work at heights. Which is not surprising, since snow guards have to be installed at the very edge of such a slippery roof, and this is the most dangerous area for work.
It is necessary to fasten the snow retainers to the profiled sheet using a through connection with the sheathing. For this purpose, it is advisable to increase the width of the frame beams in advance using additional beams so that the snow guards themselves can be secured with entire brackets.
For this purpose, it is necessary to use only those self-tapping screws that are equipped with special sealing rubber gaskets and are capable of maintaining the integrity of the coating, while protecting the holes from precipitation and leakage:
If you are installing on a roof with quite steep slopes, then try to make at least two rows of snow retainers, and increase the number of rows where the attic windows and the entrance to the house itself are located below. And also in those places where walls and roofing intersect, in order to even more optimally distribute the load on a thin profiled sheet.
But polycarbonate snow guards are good because, if desired, you can install them through the roofing:
Either without making holes at all, or in combined version:
Now let's figure out how to properly connect barrier-type snow retainers to each other on a corrugated roof. They look like a longitudinal strip, the cross-section of which resembles right triangle, and the high leg of this triangle corresponds to snow cover.
And also like this:
It is better to fasten the snow retainers during the installation of the corrugated roofing itself, so as not to disturb the waterproofing.
The distance between the fastenings itself must be calculated based on the angle of inclination of the roof slope. The greater the angle and the steeper the slope, the more often you need to install snow guards. In the case of a roof made of corrugated sheets, the brackets must be attached to the roof sheathing, and not to the roof covering, so that if the snow masses suddenly melt, the roof itself will not collapse.
Separately, we note that the self-tapping screws that the modern market offers differ not only in price, but also in quality. Moreover, there are usually no complaints about the rod, but when it comes to the size of the thread or the quality of galvanization, the requirements must be high. This is very important for roofing! If the snow guards were installed correctly, then the fasteners will always be closed from moisture from entering from above.
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