Do-it-yourself rules for installing snow retainers on the roof with video. Snow guards on the roof: classification, features of application and installation

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Last revision: 11/28/2014

One of the most dangerous manifestations of the spring thaw is, as you know, the unpredictable fall of melting snow from the roofs of buildings, often resulting in injury to bystanders (sometimes fatal).

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 in time, which has not yet completely dried up on the roof surface. In addition, you can simply install snow guards , allowing to keep snow from unpredictable falling and "pit" it from the roof surface in small portions.

Snow that has accumulated in excess can destroy (push through) the roofing, and if it comes off too sharply, tear it off or damage the protective layer on the material.

In addition, an unexpected snow mass can break wires, as well as damage or disable air conditioners. To properly install the snow retainer on the roof, we recommend that you read this article.

Types of snow retainers

There are the following types of snow retainers:

• corner;
• tubular;
• lattice structure;
• lamellar;
• grid.
  

Classic snow guards can be made in several versions:

• in the form of brackets fixed on the roof sheathing with double-row metal pipes. The possibilities of snow retention in such a design can be adjusted by changing the distances between the pipes, as well as between the lower pipe and the roof. By adjusting the mounting pitch of the brackets, it is possible to change the system parameters according to the allowable load.
• in a lattice version, which involves the installation of rigidly fixed brackets with lattice sections fixed to them;
• in the form of lamellar 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 retainers on metal tiles, for example, it is necessary that the roof slope angle be no more than 30 °.

Installation of such snow retention elements is carried out in the following order:

• First of all, at selected points of the roof, support brackets (plates with a corner) are installed, made of durable metal, on top of which a decorative overlay made of roofing material is attached.
• in the case of installation of corner-type snow retainers, the latter are mounted in two rows along the height of the slope, alternating through one element;
• while the plate elements are attached to each a wave of metal tiles, while the corners 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 is not significant, since it is possible to fix the brackets on such a surface without much difficulty.

They are installed vertically on the plane of the roof and are fixed on its surface in the most convenient way for you. In the case of fastening the brackets along the joists of the crate, depending on the planned dimensions of the structure, their length can be from 300 to 1000 mm.

Note! On the slopes of a large area, snow retainers can be mounted in several rows (with a solid fence or in a checkerboard pattern).

As for the slope restrictions, this indicator is not standardized for these fence 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 does not hold by itself. An interesting conclusion follows from this that it is possible to completely get rid of problems with snow retention if a roof with a large angle of inclination of the slope (with allowable wind loads) is laid in advance in the project.

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 slope surface without snow catchers placed on it. In the presence of the latter, on the contrary, the removal of snow from the slopes should be carried out as often as possible, which is necessary to remove excess weight from the roof structure.

We note in passing that even in the absence of snow retainers in the northern regions of our country, by the end of winter, a layer of snow on roofs with an area of ​​\u200b\u200babout 80-100 m² can reach an average weight of 8 to 16 tons.

There is another circumstance that should not be forgotten when installing snow retainers with your own hands. We are talking about the use of auxiliary equipment on the roof, without which snow removal can turn into an unsafe event. The composition of such protective devices should include fences (with a building height of more than 6 meters), which are mounted around the perimeter of the roof, as well as roof ladders or stairs of a special design that allow you to move freely even on a heavily snowy surface. The perforated surface of these ladders does not retain snow and provides good grip with any type of footwear.

When carrying out such work, no one relieves you of the obligation to comply with safety regulations. Any high-altitude work should be carried out only with a safety mounting belt and shoes that prevent slipping on an icy surface.

Video

Another video about choosing a snow retainer:

Photo

The widespread use of metal roofs is explained by their excellent performance and relatively low cost. At the same time, plastic water drainage systems are installed, and the building takes on a complete look in a modern style.

But few people know that metal roofing has one common and rather unpleasant drawback - a low coefficient of friction. As a result, in the spring, snow masses descend like an avalanche and damage the plastic elements of the spillway systems. In addition, this situation can cause serious injury to pedestrians. To protect people and structures, snow retainers should be installed.

Prices for snow guards

Snow guard

To understand the principles of installation various types snow retainers, you need to familiarize yourself with their device in more detail, technical specifications, advantages and disadvantages. These parameters provide big influence to choose the right algorithm for installation on roofs.

Table. Types of designs of snow retainers

Type of snow retainer	Performance characteristics and mounting features
	Have different shape and dimensions, cut one thick layer of snow into several thin ones. This reduces the load on the gutter of the drain system and minimizes the risk of injury to passers-by. Tubular snow guards are fixed to the crate, which guarantees their high strength. In addition, they do not delay, but cut the snow, which further reduces the effort on the fasteners and increases the reliability and durability of the devices.
	All elements are made of galvanized steel, some have a decorative coating. Height 5–20 cm. The fastening method is no different from tubular ones. The disadvantage is that the gratings hold the entire snow cake, and it can have a very large mass. Such critical loads have a negative impact on the durability and safety of the structure.
	These devices are recommended to be installed only with insignificant snow cover parameters. The fact is that they are fixed not to the crate, but to the waves of metal sheets. Such a fastening is very fragile and breaks out under relatively small loads, leaving holes from under the hardware on the roof. As a result, leaks and the need to perform unscheduled repair work. If you follow the recommendations of manufacturers and mount corner plate snow guards only in regions with little snow cover, then a logical question arises - why snow guards where there is no snow? Why waste time and money just to drill extra holes in your roof?

In addition to these, there are also quite original point (rope) and wooden devices. But they are used so rarely that it is not necessary to describe them. Such snow retainers are completely ineffective, installation on the roof has only negative consequences.

Important. Snow guards are recommended to be installed only on metal roofs. Mounting them on a flexible bituminous tile, asbestos-cement slate, natural tile is impractical, since these coatings have a high coefficient of friction, snow never avalanches from them.

Prices for snow guards on a seam roof

Snow guard for rebated roof

Each type of snow retainer has its own mounting technology, but for all cases developed general recommendations. What exactly?

1. As mentioned above, it is advisable to install such structures only on roofs made of profiled sheets, metal tiles or seam roofs.

   

2. Snow guards prevent damage to plastic drainage systems. If your home has metal system from galvanized sheet steel, the hooks are made from a strip of carbon tool steel with a thickness of not about 2 mm, then no snow of this design is terrible.

   

3. It is strongly not recommended to mount corner lamellar snow retainers, you do not need to pay attention to manufacturers' advertising. Practice has proven not only their inefficiency, but also harmfulness. The risks of damage to the integrity of the roof exceed 90%, and where structures remain intact for several years, there is no snow. Lamellar snow retainers are fixed only to the metal sheets of the roof, this mounting option is the most unfortunate of all possible.

   

4. On the metal tile there is a slope of individual segments. In this regard, the laths of the crate have a strictly regulated step of 35 cm, at this distance there are even horizontal lines profile. Only such a condition ensures the correct position of the sheets, the load does not bend the profile, but is transferred directly to the truss system. This means that the distance between the fixation points should also be 35 cm, if this is not the case, then even at the stage of manufacturing the crate, it will be necessary to provide separate places for fixing tubular or lattice snow retainers and install additional rails.

   

5. Bearing brackets for snow guards must comply with technical parameters roofing materials. They are the same for profiled sheets, others for a seam roof, and third for metal tiles. If you have any doubts, it is highly recommended to consult with a sales consultant. He must know the differences and performance characteristics of all types of mounting devices.

   

non-compliance simple tips will cause major problems with the roof. You must always remember that snow retainers are not installed for beauty or completeness of the roof, but to perform strictly defined tasks.

Installation of tubular snow retainers

Each break in the metal tile should lie on the laths of the crate, the distance between them is 35 cm, but there may be other options. Brackets of snow retainers are fixed only to them. It is necessary to carefully study the manufacturer's instructions and only then proceed to.

Important. When buying devices, pay attention to the mounting brackets. The distance between the fixation points must fully correspond to the distance between the breaks. The lower end of the bracket should be curved, the length of the leg should correspond to the height of the tiles. This section of the bracket works in compression, if it is even, then the metal tile is deformed during operation.

Step 1. Count the number of snow retainers and hardware. The structures are fixed with special self-tapping screws, the diameter of the thread is slightly larger than that of the hardware for fixing metal tiles. The length is selected taking into account the thickness of the battens. General rule- it is desirable that the end of the self-tapping screw does not protrude beyond the bottom surface of the rail.

Step 2 Decide on a specific mounting location for devices. Architects recommend installing them in a plane bearing walls, but not everything is so simple. It is necessary to take into account the overhang of the roof, in some cases its length does not allow fixing snow retainers. There are times when, on complex multi-pitched roofs, the location is chosen taking into account the zones of maximum snow cover height, the presence of skylights and doors. If it is difficult to make a final decision on your own, then it is better to consult with experienced roofers. They have been observing the behavior and functionality of snow guards located in various places for many years and know the places for their optimal fixation.

Installation can be done directly from the roof, stairs or scaffolding. If the elements are located near the edges of the slopes, then you need to work from the stairs, if far away, then you need to climb the roof.

Important! Never disregard safety regulations. You can not rely only on experience and luck, especially if the work is carried out at a height.

Step 3 Place the brackets on the roof, check their position. Fasten the elements to the roof with a cordless screwdriver. Each requires two self-tapping screws, both should be screwed in as close as possible to the breaks in the tiles. Fixing is done in several stages.

1. Attach the bracket to the roof and mark where to drill the holes. This can be done with a felt-tip pen or immediately with a drill for metal.

   

2. Remove the bracket and carefully drill holes, note that holes should only be made in the metal tile, the laths of the crate should remain intact. While drilling, gently press down on the tool.

   

3. Insert a self-tapping screw into the bracket hole, put a rubber sealing gasket on it from below. It is made of modified material, not afraid of negative impact ultraviolet rays. Special rubber does not crack for a long time, does not have the effect of fatigue from internal stresses and retains elasticity at low temperatures. Such physical characteristics make it possible to guarantee a long period of reliable sealing of the snow retainer attachment points.

   

4. Screw the fasteners firmly.

   

Pay attention to pads. Some types of brackets do not have bent legs, the height of the tile elements is leveled due to linings. The front is shorter than the back, do not confuse them when installing snow retainers.

The number of elements and the distance between them is selected individually in each case. This takes into account the length and angle of inclination of the slopes and the climatic zone of the building.

Step 4 Insert the tubes into the special holes in the brackets, their diameter makes it easy to enter the prepared places, but not to stagger.

Practical advice. If the length of the eaves of the house exceeds three meters, then it is necessary to mount another set of snow retainers. The tubes of both devices are firmly fixed to each other; for this, the manufacturer has provided a detachable double socket connection. To exclude the possibility of spontaneous exit from the connection, it must be fixed with a bolt and nut, the pipes have through holes for this purpose. It is not necessary to tighten the nut strongly, it is enough to tighten the nut by hand.

If everything is done correctly, then the design will reliably cope with its tasks for a long period of time.

Installation of corner lamellar snow retainers

Prices for popular models of screwdrivers

Screwdrivers

We have already mentioned that this is the worst option for protecting the roof from snow avalanches. But if there is a desire to use such structures, then it is recommended to take into account practical advice, they minimize the possible negative consequences.

Step 1. The snow retainer strips are laid out on the roof and markings are made, after which the edge of the product is fixed. Self-tapping screws need to be screwed only into the crest of the wave. For convenience, you can make holes first in the roof, and then in the plate. The length of the self-tapping screws must be such that the fixation is carried out to the lath of the crate. This means that the first attachment point is always located on the bend of the tile.

Step 3 Finally, fix the bar in the middle. There are 6 screws for each plate.

Do not install plate elements in a continuous row, make gaps between them. This will reduce the load on the snow retainers and reduce the risk of separation.

Due to the fact that the holes are made in the ridges, leakage will be very small, there is no need to install special seals. A few drops of water caught during a heavy downpour will dry without any problems, there will be no harm.

If the angle of inclination of the slope does not exceed 15 °, then snow retainers are not needed, the snow melts slowly even without them, there are no avalanches. And the main advice - do not buy corner plate snow retainers, use more reliable and functional types. Moreover, on sale there are many options with different colors and design solutions. It is not difficult to choose the most successful one for yourself.

Video - Installation of snow retainers on the roof

When installing snow retainers, it is very important not to damage the roofing in order to avoid leaks. But what if this did happen? You can read about how to seal the roof, and which sealant is better.

From this article you can find out what snow retainers on the roof are: purpose and existing species products, their characteristics and rules of use. The text contains detailed description corner, tubular, lattice, as well as point snow catchers and the basic rules for their installation on metal tiles, soft, seam and other types of roofs.

Roof snow avalanches are a common problem in regions where winters are accompanied by heavy rainfall. To solve it, we use special devices- snow guards. These structures keep precipitation on the roof, which gradually flows down the drains during the melting process.

There are several types of snow retainers. These products are selected based on several factors:

• roof type;
• roof pitch;
• the thickness of the snow cover characteristic of the region.

Consumers can buy roof snow guards with roofing material when the house is still under construction, or they can be purchased as an accessory to a finished building. These devices may have different names depending on the functions they perform.

Snow blocking protections provide full deduction of rainfall on a roof. They are also called snow barriers. In this case, even partial melting of snow layers is impossible. The accumulated precipitation will melt and leave the roof in a natural way.

Snow cutters perform a different function. They are designed to cut the snow layer into several small pieces. Thanks to this, the energy of the avalanche will be minimal and safe.

Snow guards differ not only in the material of manufacture, but also in shape, size, and also in the degree of reliability.

Consumers can buy snow retainers of the following types:

1. Trellised.
2. Corner.
3. Tubular.
4. Point.

In addition, you can make protective structures for the roof yourself. For this, wood is most often used.

Helpful advice! When choosing snow catchers, it is imperative to pay attention to how much snow the structure is designed to hold. Otherwise, it will not be able to fully perform its function and ensure safety.

Universal tubular snow retainers 3 m: price and design features

Tubular-type products are made from brackets and a pair of pipes, the diameter of which is 1.5-3 cm. The height of this design is 15 cm. The bracket has the form of a vertical plate in which holes are made for installing pipes. There is a shelf at the bottom of it. It is used to fix the snow retainer on the roof. Metal screws with a hexagon head (0.8x6 cm) are used as fasteners.

Bracket appearance may vary. It depends on the type of roof where it will be installed. It is desirable that there be a distance of about 2-3 cm between the roof surface and the first pipe, and 8-10 cm between the pipes.

Tubular structures cut the snow layer into several parts. They are reliable and can handle a lot of pressure. This category of products can be considered universal, since tubular snow cutters are suitable for almost any type of roof:

• sheet;
• soft;
• tiled.

Installation of structures is carried out along the slope around the entire perimeter of the building. In this case, the products are not located apart, but in a row. If the snow load in winter is high, you can install two rows of protective structures at a distance of 2-3 m from each other. Moreover, the lower one is fixed with an indent of 0.4-0.5 m from the cornice overhang. The shade of snow retainers can be matched to the tone of the roof, so after installation, these structures are not striking.

For the manufacture of tubular snow retainers, galvanized steel is most often used. From above, it is covered with paint, which is selected to match the color of the roof. Thanks to this, the product not only fits into general form buildings, but it also turns out to be durable. Moreover, the paint provides protection against corrosion.

Average prices for tubular snow retainers:

Note! Tubular railings are suitable for roofs with a large slope (up to 60°), where snow movement often occurs due to high pressure. If the slope of the roof exceeds this figure, there is no need to install snow retainers, since precipitation does not linger on the surface, but immediately crumbles.

Features of lattice snow retainers on the roof: price and characteristics

Lattice snow guards in a universal design have the form of brackets on which the grate is fixed in a vertical position. All parts of the product are made of galvanized steel, opened with a coloring composition, which allows you to choose a design for any color of the roof.

The size of the grids may vary. The largest options have a height of about 15-20 cm. The size of small gratings does not exceed 5-7 cm. The level of strength and the ability of the structure to hold a certain amount of snow depend on the size of this part. Large steel gratings can withstand the weight and pressure of a large amount of precipitation with ice. As a rule, snow retention on the roof is provided constantly. Precipitation leaves it only in the form of melt water.

Lattice-type products are mounted on long roof slopes with a large slope. The presence of such a design ensures that blocks of snow do not fall on the head of passers-by. The effectiveness of the grating depends on its height. There are no restrictions regarding the roofing material, since all types of fasteners are provided for this type of protective structures.

On sale you can find snow retainers, where the grate is welded to the longitudinal pipes. This configuration improves the reliability of the product. Installation of lattice structures is carried out on a slope along the eaves. If the snow loads in the region are large enough, other types of protective fences can be installed as an addition, for example, lamellar snow guards. The same applies to cases where the slope length exceeds 5.5 m.

The average price of lattice structures for natural tiles (ceramic or cement-sand) is 4250 rubles per piece. The purchase of products intended for seam roofing will cost about 3200 rubles / piece.

Note! Under the pressure of a large amount of snow, the gratings can bend. With regard to this aspect, tubular structures are more reliable. The strength of the lattice snow retainers depends on the shape of the guides or brackets, as well as their quality. You should not buy products where these parts have the same thickness as the grille.

Lamellar or corner snow retainers for metal tiles

If a small amount of precipitation accumulates on the roof, you can limit yourself to buying corner snow retainers. Most often they are used on a roof made of corrugated board or metal tiles, since these products are made from a similar material and in the same color.

Corner metal constructions have a bent triangular shape with two faces, equipped with shelves for fasteners. The height of this type of snow retainers is 4-6 cm.

Products are attached directly to the roofing material, the upper wave of the coating is no exception, where fences are also fixed. The installation of snow retainers on a roof made of metal is carried out along the ridge. This is done in a checkerboard pattern. Products are placed in several rows (at least 2) in increments of 0.5-1 m.

Corner-type snow guards are not very durable. They will not be able to keep a large amount of snow from convergence. Therefore, these products are used only in those regions where there is little precipitation in winter. In addition, you will need to regularly clean the roof. The cost of such snow retainers is 290 rubles / piece. (2 m).

The specificity of the yokes - point snow retainers for the roof

Spot snow retainers are called yokes or hooks. They are not designed to hold a large amount of snow, therefore they are used as an addition to tubular and lattice structures. It is allowed to install on a roof with a soft coating, which has a slight slope.

Related article:

Description of the most common roofing materials of various types and types. Application and installation features.

Soft roofing contributes to the accumulation of snow, since it has a rough surface in the form of a sprinkle of granules. Precipitation is well kept on roofing material and shingles.

Note! If the roof has a slight slope, then snow is unlikely to converge. Nevertheless, for the purpose of safety net, it is desirable to install yokes in a checkerboard pattern with a step of 0.5-0.7 m.

Spot snow retainers look like triangles with a long plate. It is used to fix the product on the crate. The installation of these snow retainers for soft roofs is carried out so that the plate is located directly under the roofing material. Bituminous tiles laid on top will hide all fixation points. As a result, the possibility of roof leaks is eliminated. The average price of point stupor is 50-60 rubles / piece.

Snow guards on the roof: installation technology and features of its implementation

These objects include:

• parking area for cars;
• balconies;
• footpaths;
• roof windows.

The installation area is selected taking into account the fact that an avalanche during the descent from the roof, the slope of which is 35 °, covers a certain area. As a rule, precipitation falls at a distance of 0.5-1.5 m from the overhang.

Snow guards are installed with a distance of 0.5-0.8 m from the cornice overhang. It is not allowed to place the protective structure directly on the overhang. An exception is when the cornice is formed truss system roofs.

Important! Installing snow guards on or near an eave will cause a collapse.

The cost of products depends on their type, dimensional parameters, material of manufacture, as well as the manufacturer. The most popular brands are Borge, Grand Line, Orima.

Average prices for Borge snow guards for different types roofs:

How to properly install snow guards on metal roofing

Metal tile is the most popular roofing material. Its configuration ensures that layers of snow come off the roof constantly. A smooth surface is not able to retain precipitation. At the same time, the roofing material is sensitive to temperature changes. The metal tile contributes to the melting of snow, due to which the entire layer, together with the ice, begins to slide down. Therefore, the installation of snow retainers is mandatory.

The following structures are installed on metal roofs:

• corner;
• lattice;
• tubular.

Corner products are suitable for little snowy winters. In other cases, it is better to give preference to lattice and tubular structures. They are durable and easy to install.

How to install snow guards on metal tiles:

1. Drawing markings in the installation area.
2. Strengthening the crate structure with an additional bar.
3. Assembly of the guardrail kit (without tightening the bolts).
4. Installation of roofing material.
5. Formation of holes for fasteners in the lower wave adjacent to the crate structure.
6. Sealing holes with rubber pads.
7. Fixing the bracket on the slope with bolts (0.8x6 cm), taking into account its length and slope. The greater the slope, the tighter the brackets are installed. The optimal step is 0.5 m.
8. Installation of pipes in brackets. If lattice snow retainers are being installed, then adjacent structures should be interconnected.

Fastening of protective products is carried out above the bearing wall. In the accommodation area roof window the crate is definitely reinforced. Some snow guards have additional benefits. For example, for Monterrey metal tiles, snow retainers with special brackets are provided. They have special protrusions that allow you not to reinforce the crate structure.

Important! The installation of lattice and tubular snow retainers is carried out through the roofing material.

How to install snow retainers on a corrugated roof

The professional flooring possesses practically the same characteristics, as a metal tile. Its surface is smooth and sensitive to temperature changes. The need to install snow retainers in this case is due not only to safety considerations. The snow that melts during the day freezes in the evening and, sliding off, scratches the corrugated board. As a result, the protective galvanized coating is damaged, which leads to the development of corrosion.

On the roof of corrugated board, you can install structures of lamellar, lattice and tubular type. The latter are used most often because they are made of galvanized steel and can be painted to match any tone of roofing material.

The installation technology practically does not differ from the procedure for installing snow retainers on a metal roof:

1. The structure is fixed through the roofing material.
2. The crate is reinforced.
3. Holes for fasteners are sealed with gaskets made of weather-resistant rubber.

Fastenings should be placed at the bottom of the wave of the coating, where the corrugated board is adjacent to the crate. Otherwise, the sheet will be deformed. If it is planned to install protective structures on the finished roof, to strengthen the crate, it will be necessary to partially disassemble it. Plate or corner products are installed in the upper wave of the profiled sheet. They do not need additional reinforcement of the crate. Fixators in this case are placed through one wave.

How to install snow guards on a seam roof

On a folded roof, only lattice and tubular snow retainers are used as protective structures. The mounting system of the latter differs only in the way the bracket is attached, which has a specific shape. In this case, the part is fixed directly on the seam, thanks to which the roof covering retains its tightness.

Installation of snow retainers is carried out by means of clips:

1. A clamp is put on the fold.
2. A couple of holes are made (sometimes 3).
3. The structure is fixed to the roof with bolted connections.

The advantage of this technology is that there is no need to reinforce the crate. Installation work carried out over the laid roofing material. As a result, the structure is strong and reliable, since the pressure of the snow layer will be distributed along the rebate.

Helpful advice! The size of the step with which the supports are installed depends on the slope of the roof. To get a reliable result, it is desirable to fix them on each fold.

For the manufacture of protective structures for seam roofing, not only galvanized steel is used, but also copper. In the latter case, the products are not sold as a set, but as a piece goods. The consumer can purchase a top and bottom bracket, as well as a pipe section. The cost of copper snow retainers is quite high, but they fit better into the design of a seam roof, which is also not a cheap pleasure.

Features of installing snow retainers on a roof with a soft coating

Soft roofing requires special handling. The maximum allowable slope angle for such a roof is 15°. In this case, the probability of an avalanche-like convergence of snow is excluded. For this reason, tubular snow trap designs are very rarely used on soft roofs.

Stone crumb on the surface of the coating prevents the movement of snow and delays precipitation on the roof. On a soft roof, a continuous crate is usually used. It is made of sheet plywood with moisture-resistant properties, so it does not need to be reinforced. Snow guards are installed at the stage of installation of roofing material. Most often, point snow retainers are used, in rare cases - tubular ones.

The installation technology of tubular structures is the same as in the case of installation on a metal tile or corrugated board. Although this system has a disadvantage, since the fasteners are located on top, thereby violating the tightness of the coating.

Technology of installation of stoppers and triangular yokes:

1. Products are placed in 2-3 rows in a checkerboard pattern. Installation step - 0.5-0.7 m.
2. The yoke is fixed on the crate structure so that the mounting plate can cover the next sheet soft cover. In this case, the triangular part of the yoke remains outside (on top of the roof).
3. The snow guard is fixed with self-tapping screws.

If the roof was installed earlier, spot snow guards can be installed from above. In this case, the use of weatherproof rubber gaskets is mandatory.

Do-it-yourself technology for creating snow retainers on the roof

Installation of snow-retaining structures on the roof is accompanied by a number of advantages. These simple devices have a lot of benefits.

Snow blowers perform the following functions:

• protection of roofing materials and drainage system from damage;
• effective elimination of a heavy snow cap, which can cause deformation changes and roof deflection;
• preventing the appearance of water smudges on the ceilings of rooms located on the upper floors of the building;
• protection of decorative elements and plantings located under the windows;
• protection of cars parked near the building from the convergence of snow;
• protection of external plaster, which can be damaged by melt water if there is a sharp warming.

Helpful advice! Even if there are snow traps on the roof, it is advisable to clean the roof on a regular basis (every 1-2 weeks). To eliminate the need for this event, you can lay a heating cable under the roof. Thanks to him, the snow will quickly melt and flow down the drain without lingering on the roof.

Recommendations for the manufacture of corner snow traps on the roof

In order to save money, you can independently make corner-type protective fences and install them on the roof. This option is considered the easiest to perform.

This will require the following tools and materials:

• metal scissors or a hacksaw;
• sheet stainless steel with polymer coating;
• sheet bender;
• ruler and marker for marking;
• drill.

To begin with, a drawing with dimensions is selected. Based on it, a corner snow retainer template is created. After that, with the help of a ruler and a marker, markings are transferred to sheet steel. This should be done in such a way that after cutting there is as little waste as possible.

In accordance with the markup, metal is cut with a hacksaw or scissors. You should not use a grinder for these purposes, even if the master has good experience with it. As a result of cutting with this tool, the protective coating on the metal is damaged, which prevents corrosion.

At the next stage, the workpiece must be fixed on the desktop. Using a sheet bender, bend the product along the marking lines. The result should be a corner with two shelves for fasteners, the height of which is 15-20 cm. Self-tapping screws will be used to fix the snow retainer. Under them, holes should be made in the mounting shelves.

Corner structures are mounted in a checkerboard pattern. If the length of the slope is less than 4 m, it is enough to install snow retainers in two rows. If this figure is 6 m or more, at least three to four tiers of barriers will be required.

Technology for the manufacture of lattice snow retainers on the roof of a private house

Lattice structures are more difficult to manufacture than corner structures. This will require skills in handling a grinder and a welding machine.

Scroll necessary tools and materials:

• metal corner;
• stainless steel to create a lattice;
• Bulgarian;
• metal pipes of suitable diameter;
• welding machine;
• suspension type supports;
• building level.

First, a drawing is made. It must take into account the parameters of the roof and all related factors. For the manufacture of the lattice frame, a corner should be used, and pipes should be used as an amplifier. Steel is prepared, markings are applied over the material. After that, with the help of a grinder, all the details are cut out.

The corners should be placed so that you get a rectangle. After that, you can fix the upper part of the frame by welding. In this case, it is very important to ensure that there are no distortions. If there are no defects, the corner parts of the frame can be welded. Then the pipes are fixed. They should be placed vertically in relation to the corners and welded. Having made required amount structures, you can proceed to their installation. Hanging supports must first be installed on the roof.

supports for improvised designs, as well as for factory-made snow retainers, can be purchased at a hardware store. Using these simple devices, you can avoid many of the problems associated with an avalanche of snow falling off the roof.

When buying roofing material, almost everyone asks the question: is it worth buying snow retainers on the roof or can you do without them? We will analyze in which cases it is imperative to install security elements, why they are needed and what type of snow retainer is suitable for a particular roof.

Types of snow retainers: tubular and lattice elements

A snow retainer or snow stopper is an additional roofing element that prevents a sharp descent of snow mass. In other words, the material cuts through large "caps" of snow and ice, protecting objects in the immediate vicinity of the building. Therefore, it would be more correct to call such an element a snow spreader. According to the form and purpose, all roofing snow retainers can be divided into the following types:

• Tubular snow retainers;
• Lattice snow retainers;
• Metal strips of the snow retainer;
• Snow retention elements for a specific roofing material.

The first two types can be classified as universal security elements, since they are suitable for almost any roof. Tubular snow guards consist of two pipes of round or oval section, brackets (supports) for fixing pipes to roofing material, fasteners and rubber EPDM seals.

Fasteners and gaskets

As hardware, screws are usually used for fastening a log with a size of 10x60 mm. The length of the pipe is usually 1 or 3 meters, and the number of supports is 2 or 4, respectively. Typically, builders purchase 3-meter elements, which, if necessary, can be cut to the desired size. Tubular types of snow retainers usually differ in the design of the supports. In the universal type, it has a flat, even surface, which allows you to install the element both on a metal roof (metal tiles, corrugated board, seam roofing) and on flat material(for example, flexible tiles).

Universal supports of the tubular snow guard

Lattice snow guards, in addition to the main functions, they are often used as roofing fencing systems. Due to the presence of a lattice, it is much more effective than other types. Mounts and installation method is similar to the tubular type of snow retention.

Lattice-type snow guards

Due to their functionality, lattice elements are often used in large multi-storey buildings with pitched roof. For large objects, roof fences can play an additional role as snow retainers.

Snow guard for folded roof

In the case of a seam roof, the supports are somewhat different from the universal ones and are pressed on both sides of the end area of ​​the seam with the help of special brackets, which are tightened with bolts.

Snow guard for folded roof

The set of material additionally includes brackets and bolts for fixing on the seam of the seam roof.

Tubular snow retainer for ceramic and cement-sand tiles

An important point is that snow retainers for natural tiles (ceramic, cement-sand), or rather pipe brackets, must be installed at the time of installation of the roof, since they are attached to the batten board.

Snow guard for ceramic roofing

Now let's move on to snow retainers for the most popular roofing materials.

Snow guards for metal tiles and corrugated board

In the case of metal tiles or corrugated board, several types of snow stops are offered.

Specialized snow retainer supports for Monterrey profile metal tiles have a characteristic step for convenient fastening of the lower part of the support through the roof to the crate.

Snow guard for metal tiles

In the range of additional elements of metal tiles there are metal slats for snow retention. Available in 2 meter lengths.

Metal bar for snow retention

The bar is completed with an additional steel support, which reinforces the entire structure of the snow retainer. The metal strip is part of the components of the metal tile or roofing corrugated board, therefore it is made in the same coating as the material itself. The element is fastened in the upper part of the wave with roofing screws 50 mm long.

Aquasystem, a company specializing in the production of gutter systems and roof accessories, offers another solution for metal tiles.

Aquasystem snow guards

Snow retention elements for flexible tiles (soft roofing)

In the article about, we already mentioned specialized snow retainers for soft roof. Snow guards are small triangular-shaped elements with perforated bases for mounting on the surface of OSB or moisture-resistant plywood.

Snow stopper shingles

After installation, the attachment point is closed with the next layer of flexible tiles. This solution looks very neat and has long been loved by architects and builders. Table with data for calculating snow retainers:

If at the time of installation of the roof the snow stops were not installed, you can subsequently fix them on soft tiles conventional tubular snow retainers with a universal flat support (bracket).

Snow retention on Ondulin

For different types corrugated bituminous sheets of the "euro slate" type (Ondulin, Nuline, etc.), tubular snow retainers are also installed by analogy with metal tiles or corrugated board. In order not to damage the roof, for Ondulin it is necessary to select a snow retainer, the bracket of which has a narrow base. In this case, the safety element can be fixed at the bottom of the wave. Do not forget about special gaskets in the attachment points for hermetic installation to the crate.

Metal strips or lattice systems can also be used as snow retainers.

Calculation of the number of snow retainers

To determine the number of tubular snow retainers, we will use the instructions from the manufacturer of roofing and facade materials- Grandline. The company offers a table that shows the values ​​​​of the angle of inclination of the roof slope and the snowy region of Russia. The intersection of these two values ​​will be maximum length slope, in which 1 row of snow retainers will be enough. If the slope length in the table is less than the original one, we set the snow retention elements in 2 rows, if it is 2 times less than the original one, 3 rows, etc.

Snow retainer calculation table

To determine the snow region, we will use a map with values ​​​​from 1 to 8.

Map of snow regions

For example, we have a house located in Moscow, the roof slope of which is 30 °, and the length of the slope is 6.5 meters. According to the map, the Moscow region is located in the snowy area No. 3.

Snow regions of Russia

We combine the values ​​\u200b\u200band get that when mounting the brackets (supports) of the snow retainer after 800 mm, 1 row of elements is required with a slope length of up to 7.2 meters. Because our 6.5<7,2 в нашем случае устанавливаем снегозадержатели в один ряд. Но мы не можем монтировать кронштейны через 1200 мм, т.к. длина нашего ската больше 5,2 метров. По аналогии количество рядов и расстояние между опорами можно определить для любого региона России.

Table of values ​​for the maximum length of the slope when installing snow retainers, depending on the slope of the roof and the snow area:

Values ​​of the maximum length of the slope from the ridge to the snow guards

Installation instructions for tubular snow guards

Before proceeding with the installation of roofing snow retainers, read a number of recommendations:

• It is advisable to use a continuous crate at the place where the brackets are attached (SNiP II-26-76 "Roofs").
• Can't be cut snow retention pipes using an abrasive tool such as "grinder".
• To achieve the required length and improve rigidity, tubular snow retention systems are installed in one line, not in a checkerboard pattern.
• An additional row is installed above the protruding roofing objects (dormer window, chimney or ventilation pipe, etc.) or near the vulnerable places of the roof (valleys, junctions).

The snow guard is mounted in the lower part of the roof at the same level as the wall of the facade of the building or slightly higher (taking into account the wave pitch in the case of metal tiles).

Snow guards are installed next to the cornice at wall level. Photo: grandline.ru

Important: when mounting on a metal tile, the brackets are attached strictly down the waves of the roofing material!

Mounting distances for snow guards

A distance of no more than 500 mm from the edge of the slope to the snow retainer pipe is allowed. The distance between the brackets should not be more than 900 mm, and between the outer bracket and the edge of the pipe no more than 300 mm.

The main mistakes in the construction of snow retention systems:

• Safety elements should not be installed in a checkerboard pattern. That's right - in one row, joining each other.
• Not respecting the distances shown in the image above.
• The use of conventional roofing screws as fastening of the snow retainer support to the crate significantly reduces the level of snow load. Use the fasteners included with the kit.

We also suggest that you familiarize yourself with a short video instruction for installing snow retainers from the manufacturer of roofing materials Grand Line.

Snow on the roof, especially metal, is not a reason for a beautiful shot. This is danger. When a large snow mass accumulates on the roof, it comes off. And it’s good if it’s not a person, but a car or a barn that gets in its way, and you get off with only damage to property. And if not? This situation can be easily prevented: it is enough to install snow retainers on the roof from corrugated board. Save on them is not worth it: the consequences can be disastrous.

Such designs of snow retainers allow you to keep the bulk of the snow on the roof surface. Only water can flow freely through the gutters of the roof when it thaws. Types of snow retainers should be selected based on several important factors: the amount of snow cover in the region, the angle of inclination of the slope and roofing material.

In this article

Types of snow retainers

Snowplows for corrugated roofs come in 4 types:

1. tubular;
2. lattice;
3. Corner;
4. Point or drag.

The tubular snow retainer consists of 2-3 pipes, which are located one above the other and connected with supports. Such a design does not retain snow in the usual sense of the word, but, as it were, “cuts” the snow mass. As a result, it descends to the ground in small and safe portions. Tubular snow guards are preferred for mounting on a metal roof. They not only ensure the safety of passage under the roof, but reduce the snow load.

Unlike tubular ones, lattice snow guards are able to hold the entire mass of snow on the roof. They can even hold small pieces of ice. This is a good option for the southern and central regions, but in the northern regions they can only be used if the roof is designed for a heavy load. In addition, the trellis should be cleaned at the end of autumn, as the trellis is easily clogged with leaves.

Corner - the cheapest, but unreliable snow retainers. They are a bent metal strip of small height. Such a snow retainer, installed on the roof, prevents the snow mass from coming off. It can only be mounted on roofs with a slope of less than 30ºС, since it is not strong enough to withstand a large mass of snow.

It is highly undesirable to install corner snow guards in areas with a large snow load. There are frequent cases when, under the influence of a snow mass, the fasteners could not withstand and the screws literally pulled out of the roofing. In this case, not only does compacted snow fall onto the sidewalk or road, but the roof itself is damaged.

Spot snow guards are designed for regions with a small snow load, as well as for regularly serviced roofs. In some cases, they are used as auxiliary snowplows. Rope snow guards on the roof made of profiled sheet, depending on the type, are attached either to the wave or directly to the crate through the metal sheet of the roof. They should be mounted in a checkerboard pattern.

Where to install?

Installing snow retainers on a corrugated roof around its entire perimeter does not make sense. It is necessary to mount them only in places where snow causes inconvenience or represents a danger:

1. Above all exits from the house, including emergency ones, which are used in winter;
2. Above paths and sidewalks;
3. Above the roof windows, otherwise in winter you will not be able to ventilate the attic;
4. Above roof connections and pipe outlets through the roof;
5. Above the parking space in front of the garage;
6. And in all other places where snowfall can cause damage.

You must understand that snow retainers on a corrugated roof will not relieve you of the need to clean snow on it. Especially if you have chosen those designs that prevent even its portioned gathering. A large snow cover on the roof is a test for the truss system, so it must be cleaned at least once a month. And also after every heavy snowfall.

In particular, regular snow cleaning is relevant for a smooth metal roof made of corrugated board. Since any metal has a high thermal conductivity, it quickly heats up on a sunny day. As a result, the snow immediately adjacent to the roofing melts, and a thin layer of water forms under the snow mass. Snow can simply slide along it, and no snow block will hold such a mass.

Installation methods

There are two ways to install snow retainers on the roof:

• Fasten the supports directly to the crate and lay a sheet of corrugated board on top;
• Fasten the supports to the crate through the sheet using self-tapping screws.

The choice of mounting method depends on what kind of fastening is provided for by the design of a particular snow retainer: clamping or hanging.

The type of fastening usually does not depend on the design of the snow retainer, with the exception of the corner ones - their installation is always carried out according to the second scheme. They are fixed with self-tapping screws on both sides: the side closest to the ridge is fixed in each wave, and the one closer to the overhang is fixed through one.

Those snow retainers that should be installed on suspension supports are mounted together with the laying of corrugated board. If the roof is already ready, it will no longer be possible to fix them. Suspension fasteners are hooked onto the batten beam in such a way that the mounting hook is outside after laying the roofing sheets at a distance of 500 mm from the edge of the overhang. Moreover, most models do not need additional fixation with self-tapping screws. After that, the snow retainers themselves are mounted on the protruding mounts.

Structures with clamping supports are installed on the finished roof. Supports are mounted above the walls and fixed with roofing screws. Fastening is carried out to the crate through a metal sheet along the bottom of the wave. If the width of the supports is greater than the crates, it must first be reinforced with wooden bars, fixed on both sides with metal corners. Naturally, this can only be done if the roofing material has not yet been laid on the roof.

Both under the suspension and under the clamping supports there are special linings that protect the corrugated board from damage. They always come with snow guards. In addition to the pads, the mounting kit always includes a decorative trim, which must be installed after the installation is completed.

If possible, try to choose those snow guards that are suspended. Yes, they are harder to install. But this is offset by greater reliability and the absence of additional damage to the metal sheet.

Installation rules

Regardless of the type of fasteners, there are 5 universal rules that must be followed when installing snow retainers. They are:

1. For fixing structures, only special self-tapping screws with a rubber gasket are used, which will protect the attachment points from corrosion;
2. To install snow retainers, only the fasteners and accessories that come with them are used;
3. With a slope length of more than 5.5 meters, snow retainers are attached in several rows every 3-3.5 meters.
4. If installation in several rows is necessary, before installing snow retainers, it is necessary to consider a plan for their placement;
5. During installation work on the roof, one should not forget about the simplest safety rules: use safety ropes and shoes with non-rigid soles;
6. During installation, care must be taken not to damage the corrugated board coating, since any scratch will sooner or later cause corrosion.

In general, installing snow retainers is no more difficult than installing corrugated roofing. And it is quite easy to deal with it if you follow the recommendations outlined in the article and listen to common sense.

Watch the video: we mount a snow retainer for a corrugated roof