Installation of snow guards on the roof. Snow guards - a modern system for ensuring safety and comfortable roof maintenance Rules for installing snow guards for metal tiles

In the majority Russian regions In winter there is a significant amount of precipitation in the form of snow. An avalanche-like descent of snowdrifts from a roofing surface can not only cause material damage, but also pose a threat to the health of passers-by. Installing snow guards on the roof will help to avoid such problems.

Types and design features

Snow retainers are designed to hold snow in order to prevent its avalanche and thereby eliminate the possibility of an accident with those who live in the house or pass by it.

The design of the snow retainer on the roof allows it to retain snow, but at the same time allows moisture that is formed during the melting process to pass through without any problems. These devices are installed on the pitched roofs of buildings during the process of laying roofing.

Depending on the design of snow guards on the roof, they come in several types:

1. Snow barriers. This is the name given to blocking type fencing. Thanks to their presence, the snow lies on the slopes until the moment of natural melting. These products eliminate the possibility of snow collapse. These include a corner snow retainer and a yoke.
2. Snow cutters. They do not hold snowdrifts on the slope, but divide them into separate parts, in which the speed of fall and the degree of mechanical impact are much less. These devices will not protect a person from the collapse of a cap of snow from the roof, but this process will become much safer. Snow cutters include tubular and lattice products.

Before installing snow guards, it is necessary to determine what type of device will be the best solution, which requires the following information:

• the amount of average annual precipitation in the region;
• the size of the slopes and their steepness.

Installing snow retention along the overhang roof slope, but if it is necessary to save money, the devices are installed in places where snow melting poses the greatest danger.

Why are snow removal measures needed?

When choosing a roof configuration, building designers usually prefer steep slopes because they handle rainfall more effectively. But in winter time When the water freezes, the advantage of such roofs becomes a problem.

Activities related to snow retention are necessary for a number of reasons, since they:

1. Provide security. As a result of an uncontrolled snowdrift falling at a significant speed, a person can be seriously injured or even lose his life. To prevent this, devices are placed on the slopes that slow down or completely block the fall of the snow mass, and can also divide it into smaller parts. But at the same time, you need to know how to properly install snow guards on the roof and then they will function as efficiently as possible.
2. Protect roof covering . Under certain conditions, snow turns into a crust of ice. As it slides off the roof, it can scratch the material and in the process remove its protective coating. In the place where the scratches appear, corrosion processes begin, leading to damage to the roof. Often this problem is relevant for metal tiles, corrugated sheets and seams.

How to properly install tubular snow guards

This device consists of a system of brackets connected by two rows of tubes with a diameter of 10 - 30 millimeters. The roof mounting bracket consists of a metal plate with a mounting shelf and holes for pipes. According to the instructions explaining how to install a tubular snow retainer, it must be mounted above the load-bearing wall of the building along the slopes.

To give strength, the lower pipe is mounted above the surface of the slope at a height not exceeding 3 centimeters. There should be a distance of 8 - 10 centimeters between the tubes. If the steepness of the slopes exceeds 60 degrees, the rules for installing snow guards provide for their placement in two rows with an interval of 2 to 3 meters.

Consumers are offered devices made of galvanized steel, coated with a coating that harmonizes with the most popular colors of roofing coatings.

Lattice

They look like a lattice. Correct installation snow guards of this type provide for their fastening on a slope using brackets. The lattice devices are made of the highest quality alloy steel, so they are resistant to corrosive processes.

The height of the grate is 10–20 centimeters. The efficiency of the snow retention process depends on the value of this parameter.

The lattice type design has gained popularity due to the presence of a number of advantages:

1. Versatility. The brackets provide the ability to install snow guards on any roofing material.
2. Reliability. The gratings are able to withstand massive layers of snow even when the slopes have a significant area and a large slope.
3. Easy to install. Following the instructions on how to properly install lattice-type snow guards on the roof, you need to fix the brackets on the surface of the slopes using a screwdriver. In this case, self-tapping screws with hexagonal caps are used, which are equipped with a rubber seal. After this, the grille is inserted into the fasteners.
4. Variety of colors. You can purchase devices in various colors, thanks to the availability paint coating. If you choose the right shade, the snow guards will not be visible against the background of the roofing.

Installation of corner-type snow guards on the roof - how to attach

If the roof is made with a slight slope and its structural design does not allow the snow mass to roll down to the bottom, snow guards are installed in regions with low rainfall corner design. They look like corners with fastening shelves up to 10 centimeters high and 20-30 centimeters long.

In the manufacturers' descriptions, in which we're talking about about how to properly attach snow guards to corrugated sheets, metal tiles, sheet metal, it is said that angular products can be mounted on roofs with slopes of no more than 20 degrees.

The procedure for installing corners for retaining snow differs from the process of installing other types of snow retainers on the roof. They need to be placed in several rows in a checkerboard pattern along the roof slopes. A distance of 50-100 centimeters is maintained between the rows - this value depends on the width of the slope.

The advantage of this type of snow barriers is that they can be made independently from metal sheets and save 50% of the cost of devices manufactured at industrial enterprises. There is nothing difficult about how to properly install corner-type snow guards. They are attached to the roofing material using a screwdriver.

Installation of point snow holders - yokes

These devices - yokes - have the shape of a triangle with a long strip designed to fix them on the slopes of roofs. They are in demand for installation on slopes covered with soft materials with rough surface, which are produced on the basis bitumen mastic. Hence their ability to hold snow masses is insignificant. Yokes are not intended to prevent snow from falling; their function is to reduce the speed and force of the fall.

There are features in how to properly install snow guards of this type:

1. Typically, yokes are mounted complete with snow holders of a different design - lattice and tubular barriers.
2. The yokes are placed in staggered rows along the roof overhangs, maintaining a gap of 50-60 centimeters between adjacent devices and a distance of 50-100 centimeters between rows.
3. Installation is carried out simultaneously with the roof covering. Before attaching the snow guards to the roof, mark on the sheathing how the rows will be arranged. The fastening stick of the devices is fixed on the boards with self-tapping screws and then covered with sheets bitumen shingles.

You can buy such yokes in construction supermarkets or make them yourself from sheets of metal. Industrial products have a neater and attractive appearance, but also homemade devices just as effective.

The process of attaching snow guards to the roof is not as complicated as it might seem at first. Even beginners in the construction business can master the technology for performing such work.

Regions with a cold climate are characterized by a large amount of precipitation in the winter season, so it is not possible to avoid the accumulation of snow masses on the roofs of buildings. Ice and snowdrifts place a significant load on the structure, but the worst thing is that they pose a serious threat to the lives of passers-by. To avoid unpleasant and sometimes tragic consequences from falling icy masses, we suggest playing it safe and installing snow guards on the roof yourself.

Snow guards protect against falling icy masses

Of course, if they have the time and desire, owners can independently clean the roof surface from accumulated sediment, but this is an unsafe and labor-intensive process, and it is unlikely that anyone will want to devote a lot of time to it. On modern market There are a lot of services offered by companies professionally engaged in such activities, but the cost of the relevant work is quite high and not everyone can afford to pay for it. Another obstacle to calling specialists may be the remote location of the house from the city limits. All these factors indicate the correctness of the actions of those who plan to install the protective structure themselves and live in peace.

Types of protective devices

On construction market There are different types of snow guards, among which you will find the following devices:

• in the form of pipes;
• with lattice structure;
• from plates or corners;
• snow stoppers-hooks.

Metal pipes

Such protective devices consist of small-diameter metal pipes arranged in two rows and tightly fixed with brackets. Installation of fastening elements is carried out by rigidly fixing them to rafter beams or sheathing elements.

The tubular snow retainer consists of metal pipes running in two rows and firmly fixed with brackets

The strength characteristics of such a snow barrier directly depend on the distance maintained between the lower pipe and the roof plane. The gap between the pipes also has a significant impact on the reliability of the installation. The reliability of protection decreases in proportion to the increase in the length of the main elements of the snow catcher between the brackets, so the pitch of the fasteners must be reduced to the possible minimum. On sloping roofs, such a structure copes with preventing a person from falling from a dangerous height.

Lattices

By analogy with the first option, grate catchers are also attached with brackets to the roof plane. For their manufacture, a metal profile is used, assembled into a frame and reinforced vertically with cross members. The required length of such protection is adjusted by connecting several sections.

To create a lattice, a metal profile is taken in a frame with vertical crossbars

Plates and corners

Snow guards of this type are made from sheet metal with galvanized surface or metal profile roofing. They consist of metal support and decorative overlay.

This design cannot withstand strong snow load, therefore practically not used

As a rule, the roofing material with which the roof is equipped is used as the basis for the lining. Place the corner and plate protection parallel to the ridge. Unfortunately, the installation of such structures is not justified where there is heavy snowfall, since it will not withstand heavy loads.

If the roof slope angle exceeds 30%, it is better to refuse to install snow protection from corners and plates.

Despite the fact that such elements are called snow stops, they are not able to prevent snow flow from the roof. Their installation is carried out on roofs with a low slope, covered with soft roll material. IN in this case there is no need to resort to additional equipment, since here only manual cleaning snow.

Hooks - snow stops are installed on soft roll roofing with a low slope

Do you need additional protection?

As you can see, the choice of snow protection for the roof is determined by several factors:

1. Climatic conditions.
2. Roof angle.

Let us immediately make a reservation that when the roof slope is 60 degrees or more, snow protection is not installed, since snow does not linger on it and does not accumulate in huge deposits.

Each homeowner independently determines the most acceptable option for himself, but there is no doubt that the feasibility of the project is obvious. To do right choice equipment, check out the table for recording precipitation in Russia, compiled by region.

The numbers reflect the weight of the snow mass in kilograms, which affects 1 m2 of roofing in each individual region. When calculating, it turns out that a roof with an area of ​​50 m2 can easily withstand 10-12 tons of snow. If roofing installation was carried out with a slope of more than 25 degrees, you need to apply a coefficient of 0.7 to the figures indicated in the table above.

Snow guard installation process

Some protective structures cannot be installed on a previously installed roof surface. For example, snow hooks are fixed simultaneously with the laying of roofing material. This is due to the fact that their base is attached to the sheathing elements, and only then the flexible decorative covering is spread. The main thing here is to ensure that rainwater does not flow into the fixation areas in the future. If you decide to install such structures in a checkerboard pattern on a finished roof, you will have to open it, and then carry out waterproofing work and cover it in a new way.

Installation of snow guards

Snow-retaining elements are installed in each wave, starting from the top edge, and from below, fixation is carried out through the wave. On large roof areas, it is better to install such devices in several rows. If desired, protection can be created from metal corners with increased strength, but at the same time you will not be able to achieve a uniform decorative effect.

Unlike the previous option, devices made of pipes and gratings can be installed on the edges of the roof at any stage of its construction, and it does not matter what material it is covered with. It makes no difference whether the process is still in progress or has already been completed some time ago; you can safely organize such protection in your private home. The protection is installed across the slope, and the plates for fixing the vertical brackets are installed in the opposite direction.

The length of the support plates of the lattice structure can be completely different, and first of all it will depend on the expected load that will act on it.

In this case, the slope of the roof does not matter, the only thing you should pay attention to is the length of the roof - if it is impressive, it is better to arrange the snow guards in several rows (according to the checkerboard principle) or in a single line.

Roof care

It would be correct to competently approach the issue of precipitation accumulation on the roof surface in advance, designing a structure with steep slopes, which is very important for northern regions, then you don’t have to worry about installing snow traps. The only disadvantage of such a project is the high cost and high consumption of materials, although additional expenses will save you from constant roof maintenance in the future. Unfortunately, there are cases when the region is covered by abnormal precipitation, which breaks snow holders under its weight and bends the decorative covering of roofs with a low slope, and this is fraught with leaks.

When planning the installation of snow guards, do not be lazy to make enclosing structures that can protect the work process. If the distance from the ground to the roof is 6 m or more, the barrier is installed along the entire perimeter of the roof structure. It must be tall and strong as required building regulations and standards.

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 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.

1. 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 private country 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.
2. 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 a budget option. However, their installation is possible only on a roof whose slope angle does not exceed 30 degrees, otherwise they will be ineffective.
3. Snow stops look very similar to hooks. Installation of snow stops is carried out mainly on roofs with soft roof th or they are used as additional elements that enhance security in winter period. Nowadays they are made of transparent plastic, which makes them invisible.
4. 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 most optimal options There 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 standard set tools that are 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. Install them over skylights, entrances or pedestrian paths. Under no circumstances should they be placed above the eaves overhang.

Tubular snow retainers 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 rafter system, which prevents 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

Installation instructions flexible tiles, including installation of snow stops:

Lack of snow protection can lead not only to damage to the 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:

1. prevents sharp and sudden snow masses from falling off the roof itself;
2. 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 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

Another good option for saving from improper snow melting is 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 there is a lot of snow.

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 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 meet him on the rooftops different types, for example, on a shingle roof. It is attached to the roof on large hooks.

L It is natural that the size of the log affects its capabilities, that is, the larger it is, the more snow may delay. 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:

1. the fastening itself is carried out through the material;
2. be sure to strengthen the sheathing;
3. small holes for fastenings should be reinforced with rubber gaskets;
4. 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 placed only in the right places on the roof.

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 used for commissioning a house under construction a necessary condition. 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

They are made of a 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 process or overhaul roofing: as the roofing covering is attached to the sheathing, hooks are installed in one or several rows, or across 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 screws with rubber seals to achieve a tight seal at the mounting location.

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

Exist the following types snow guards:

Classic snow holders can be made in several versions:

• in the form of brackets fixed to the roof sheathing with double rows passed through them metal pipes. 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 from 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, 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 the slopes large area You can install snow guards in several rows (in 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 with a completely flat surface of the 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:

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How to install snow guards

The roof of a house is very complex design. May be present here various devices and devices. 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 can protect you from accidents and legal proceedings, in case 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.

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 modern technologies snow stops are made from 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 snow melts. large mass 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.

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.

It's no secret that accumulated in large quantities on roofs, snow carries a great danger to others, since, falling from a great height, it can cripple a person, or even take his life. The only device that allows you to retain snow masses in full is a tubular snow retainer - we will tell you what it is and how to install it in this article.

In what cases is it advisable to install snow guards?

All possible loads and impacts on the roof are described in detail in SNiP. Here you can find information broken down by region of our country according to the level of snow cover and its pressure on the roof.

It is worth noting that wet, loose snow puts an even greater load on the roof - 10-100 kilograms for every cubic meter of snow. Before the beginning of spring, this figure can reach 280 kg. The density of snow increases greatly in wet spring conditions, when the rafter system must resist as much as 700 kilograms for every cubic meter of snow.

Why do snow masses become so heavy? The reason lies in the physical process - fermentation of snow - this is when frozen balls of water vapor appear inside the snowdrifts. Dry snow corresponds to a two-phase fermentation stage, and wet snow corresponds to a three-phase stage, since ice particles have already formed inside the wet snow.

Therefore, if your house was built according to a well-designed project in which the roof is able to withstand loads that meet the standards of your place of residence, then you don’t have to clear the snow from the roof, but simply install a universal tubular snow retainer. This way, you will be protected from possible unexpected avalanches of snow. If your roof was built without taking into account climatic features your region, harsh winters can cause big problems.

There are times when installing a two-pipe snow guard is the only right solution. In conditions of heavy snowfall, in particular, when wet snow accumulates on the roof, a simple corner snow retainer can simply bend and fail to cope with the task. Pipe snow retainers are recommended by experts due to the fact that they separate snow precipitation into at least two parts, ensuring safety for people. In this case, the snow retainers must be fastened only along the perimeter of the roof and on top of the roof windows.

In appearance, tubular snow guards are very similar to cornices, since they have two rows steel pipes, attached to the rafters or sheathing. In reality, this design makes it possible to retain a significant amount of snow precipitation.

Simply put, tubular snow guards are designed to separate large volumes of snow into smaller volumes. This greatly reduces kinetic energy melting snow and its destructive power. As a result, several problems can be solved at once: the snow falls off the roof under the influence of weight, and if it falls, it is no longer so dangerous for others.

Design of a tubular snow retainer

Installation of snow retention on the roof is especially necessary where it has a slippery coating. This applies to corrugated sheeting, metal tiles and seam roofing material. Installing tubular brackets in this case would be an ideal solution, because they do not collect large volumes of snow masses on the roof, but only cut them into smaller pieces, which is the most correct solution.

Tubular snow retainers consist of two tubes, fastened with special brackets in the same direction with the edge of the roof. They are usually made from galvanized steel coated with paint, but you can also find aluminum and copper products.

The following materials are used as raw materials:

• For galvanized products, hollow pipes with a cross-section of 3-4 cm are taken and installed on supports in two rows.
• Snow guards made of aluminum and copper are made of flat-oval pipes with a cross-section of 40×20 mm or 45×25 mm. Special universal supports are designed for them, suitable for all types of roofs. They are mounted in several rows.

Deciding on the right device

The entire list of characteristics of snow guards is determined by the type of used profile pipes, brackets, and steel thickness. It is best if they are made of galvanized steel, opened polymer material. Such products will best resist corrosion, and their service life will also increase. In terms of strength, the oval profile pipe is considered the strongest.

Currently on the market you can find many options for snow guards, which differ quite low prices, however, their quality and shelf life do not stand up to criticism.

To choose the right quality snow guard, you should focus on the following parameters:

1. Thickness and grade of sheet steel. These indicators have a direct impact on strength, as well as the level permissible loads for snow guards. U different manufacturers Various grades of steel with different thicknesses are used.
2. Quality of zinc coating, thickness of its layer and application method. It is noteworthy that applying a layer of zinc using the hot method is more durable, since it is performed on finished products. Cold galvanizing involves applying the coating to sheet steel, from which snow guards are subsequently made. The disadvantage of this approach is the reduction in the thickness of galvanizing or its complete absence as a result of the production of products. Such weak points are more susceptible to corrosion.
3. Product coloring quality. Not only the presentability, but also the service life of the snow guard will depend on what type of paint was used and how it was applied. Since these products are constantly in contact with moisture, it is very important that the zinc coating is properly protected. Otherwise, any flaws will quickly begin to rust.
4. Configuration. When purchasing a snow guard, make sure that its design matches similar products other manufacturers. Reducing the number of main components of a device only indicates a desire to reduce production costs, but not an improvement in its quality.
5. Step between supporting elements. Sometimes you can find products in which the bracket for a 3 m long snow guard is equipped with only four support elements. In this case, the step between them will be 80-90 cm. This set is acceptable only for short slopes. It is noteworthy that in European countries maximum distance between supports is 70 cm.

Based on customer reviews, the highest quality products are provided by foreign companies Borge and Orima. From Russian manufacturers The “Rus” brand is quite famous. However, judging by the reviews, the thickness of the pipes and brackets, as well as the quality of the product, leave room for doubt.

Installation and fastening method

Perhaps the most reliable is the tubular design of snow retention devices. They are used in the construction of roofs with smooth surface, a large slope and a large area of ​​slopes.

However, in order to achieve best results, it is important to perform the installation correctly. Let's give detailed instructions for installation of a tubular snow retainer.

Planning the placement and number of devices

The first stage of the installation of snow guards is drawing up a diagram and calculating the expected loads on the structure. This step will avoid problems during the installation process. Ideally, during the work there will be no excess or shortage of fasteners.

Preliminary calculations of snow loads on supporting elements will allow you to determine exactly how many of them need to be installed on a given roof area.

Calculation of the pitch between supports and the distance between elements

According to regulations optimal distance between brackets for snow guards is calculated based on the planned snow load in a particular region. This approach is due to the need to redistribute the load from snow retainers to the load-bearing walls of the building. If we neglect this condition, then if an excessive amount of snow accumulates on the eaves, it is able to operate according to the principle of a lever, resulting in disruption roof structure.

The contour of the tubular snow retainers installed along the perimeter of the roof must be continuous. In cases where the length of the slope exceeds 5.5 m, it is allowed to install 2-3 rows of snow retention devices. In this case, the distance between the snow guards should be at least 2 m, however, the contour cannot be interrupted.

Devices for holding snow on metal roofs should be installed flush with load-bearing walls, thus snow mass will put pressure exclusively on the section of the roof located above the eaves. In this case, 60-100 cm should remain from the overhang of the cornice to the load-bearing wall. It is mandatory to install snow guards above the attic windows. In these places, a continuous sheathing is required to install snow guards from pipes.

Fasteners and adapters for snow guards allow you to adjust the number of rows and pipes. Please note that the main load from snow always falls on the fastening elements. Therefore, the roof covering used must be strong enough to withstand a similar load. As a result, the pitch between the fasteners can be increased to 120 cm. If the length of the slope is more than 5.4 m, the fasteners must be installed in increments of 90 cm. If the length of the slope is in the range of 1.26-5.4 m, then the fasteners can be install at a distance of 60 cm.

Provided that the roof slopes have a slope of 30º and the expected snow load is from 180 kg per 1 m 2, snow retainers of a two-tubular design will be required.

Installation of brackets on the roof

If the roof is covered with materials such as ondulin, metal tiles or corrugated sheets, then the brackets for tubular snow retainers must be mounted in the sheathing. Before installing snow guards on a corrugated roof, you need to think through everything carefully. In the case of using bitumen shingles, fastening is carried out in particle board. But for ceramic tiles The brackets must be attached to the support beams.

Extension would be preferable roofing sheathing bars in areas where snow guards are installed. They are installed through the roofing material using self-tapping screws with rubber gaskets.

Types of brackets

The structure of brackets for tubular snow retainers can be simple, simplified and perfect. In the case of a simplified type of construction, the base of the bracket must be slightly curved so that it can be secured to the waves of the metal tile. The springing effect is created by sealing gaskets.

First, attach the side supports of the bracket. In this case, the edge of the snow guard should not protrude more than 10 cm. Then the devices with brackets installed on them are tried on.

You should not fasten intermediate supports in advance, since there is a possibility that their location will not coincide with the holes in the roofing material. In addition, the bracket must be fixed to the sheathing, otherwise wet snow can tear it out, damaging the roofing.

Ways to solve some complications

Most often, when installing snow guards on the roof, craftsmen are faced with the fact that the length of the bracket does not coincide with the pitch of the purlins. The standard distance between fasteners is 3, 3½ and 4 m. If the overhang rafter legs is not provided, then you need to retreat 50-80 cm from the cornice.

The few disadvantages of tubular-type systems include the fact that their height is lower than that of gratings. In addition, additional waterproofing is required at the junction of the snow retention device and the roofing material. To avoid shedding of small ice shards, in combination with tubular snow retainers, you can attach a special bar.

In those regions where there is a temperate climate and a large amount of snow falls, pitched roofs pose a great danger to people. It is due to the fact that a large mass of snow accumulates on the roofs, which can fall down at any moment. Moreover, if the roof of the house is covered with corrugated sheets, because a metal sheet has high thermal conductivity. This means that the heat emanating from the interior reaches the snow mass without hindrance. Its lower layer begins to melt, forming a water layer between the smooth surface of the corrugated sheets and the snow. It is the latter that causes an avalanche-like huge volume of snow to fall.

To prevent this from happening, special devices called snow retainers are installed on corrugated roofs. It should be noted that these important devices also perform additional functions. Without them, things can happen unpleasant consequences another plan. Namely:

• Distortion or even destruction truss structure buildings by changing the uniform distribution of snow cover on the corrugated roof.
• The part of the roof located below may be destroyed. Because the volume of snow falling down can have a huge volume and mass.
• The drainage system may be destroyed.
• Plantings near the house were damaged and people's personal property was damaged, for example, cars parked under the windows.

All this can be avoided if installed from corrugated sheets. They are the ones who will hold back the mass of snow, regardless of whether it melts or not. In this case, the uniformity of the snow cover over the entire area of ​​the slope will be maintained.

Attention! Remember that installing snow guards is an opportunity to prevent snow from melting and, accordingly, get rid of many troubles. But this does not mean that the corrugated roof does not need to be cleaned. This must be done regularly, especially in regions where there is heavy rainfall.

Types of snow guards

Modern snow guards have a fairly wide range of models, mainly made from metal profiles. By the way, making a snow guard with your own hands is not a problem. The main thing is to choose the simplest and most reliable option.

Tubular

This is the most commonly used model and quite popular. The thing is that a tubular snow retainer is not just a device that holds back snow; with its help, precipitation can be gradually released without causing harm. That is, snow passes between the pipes in small portions and falls from the corrugated roof. This reduces the load on the roof structure. Therefore, experts believe that this option for snow retainers is the most effective.

Let us add that the pipe structure is highly durable. They are usually installed directly at the level of the house wall and attached to the roof with self-tapping screws through corrugated sheeting. That is, installation of the device is very simple. If the height of the slope exceeds 5.5 m, it is recommended to install pipe snow retainers in several rows.

Currently, many manufacturers produce tubular structures. But more and more often these models, in which pipes are installed, began to be advertised on the market. round section, but oval. Engineers have calculated that this option is more reliable; it copes well with enormous loads and pressure from the snow cover.

Lamellar

The design of this model is very different from the previous one. But this is one of the cheapest options on the market. Essentially, it is a perforated metal plate mounted on brackets. Like the tubular device, it is installed at the eaves of the roof. An important component of plate snow retainers is the thickness of the material used. The thicker it is, the more reliable the device. Of course, the fasteners connecting the plate and bracket must be of high quality.

But manufacturers warn that slatted snow guards cannot hold back large volumes of snow. Therefore, it is recommended to install them on roofs with a slope of no more than 30°. You can often find these models made from the same corrugated sheet.

Lattice

This option for snow retainers is both the simplest in terms of design and the most effective in terms of containing snow mass. As for the design, lattice devices can hold even small pieces of ice. That is, it turns out that these structures can hold a large volume of snow on corrugated roofs. This means that their installation is possible only on roofs with high load-bearing capacity.

The most surprising thing is that these snow guards are not directly attached to the roof of the house. They require additional hanging units. They are attached without screws to the roof sheathing, and snow guards are already installed on them. There is another type of additional attachments of the nail type. They are nailed to roofing material, but in this case this material must be soft.

Bent (angular)

To be honest, not the best good option snow retainers. It's all about their design, or, more precisely, the profile used for manufacturing. In essence, it is a metal corner or a channel bent along the profile. If we think logically, then this is not a snow retainer, but a barrier through which nothing can pass. Such a device holds back large masses of snow, but cannot withstand enormous pressure. So, during heavy precipitation, bent snow guards quickly fail.

Therefore, experts advise installing these structures on roofs with a slope of no more than 30°, and better in regions where snow falls in small quantities.

Spot

This version of snow guards appeared on the market relatively recently. It was specially invented for roofs made of corrugated sheets or metal tiles. These devices are made of galvanized steel, like the corrugated sheet itself; almost all models are coated with a polymer layer, which increases their service life. Manufacturing technology - stamping.

Attention! As for the installation of point snow retainers, they are installed on the crest of a wave of corrugated sheeting, and fastened not to the wooden elements of the roofing system, but to the metal surface of the corrugated sheeting.

Of course, today it is impossible to say that these are the most effective models. But the fact that they are better than some is already possible. In any case, point installation allows you to reduce the load on the roof structure and prevent avalanches of snow. After all, part of the precipitation will pass through the snow retainers.

Homemade

There are a huge number of options for homemade snow retainers. Most often they are made from metal corners, and pipes are often used. An important component is the strength of the structure itself, so anyone who repairs a roof from corrugated sheets and plans to make snow guards with their own hands must have skills in working with electric welding.

Correct installation of snow guards on a corrugated roof

When choosing the design of the snow guard itself, it is necessary to take into account the fact that it is the brackets that bear the main load. Therefore, these fastening units must be made of durable metal, they must have sufficient big square contact with corrugated sheeting, and they must withstand quite serious loads, up to 300 kg for each element.

Typically, the installation of brackets occurs at the crest of the wave of corrugated sheeting; in fact, it is like installing a ridge on a roof made of corrugated sheeting. Wherein fastener must fit into the wooden plane of the roof sheathing. All models, except for the point model, are installed in a row parallel to the cornice at the level of the load-bearing wall. It is prohibited to install below. Fastening is done with screws every 50-60 cm. Neoprene gaskets (cuffs) must be installed under the screws. It is believed that the fastening step should not be greater than the sheathing step.

On steep and large roofs Snow guards are installed in several rows. The distance between them is 2.5-3.5 m. As for point devices, the installation can be carried out not necessarily in a row. The chess variant is used quite often. The main thing is to evenly distribute the devices over the roof area.