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In this article, we will tell you about what are snow protectors for soft roofs. Here you will find information about what such devices are in general and what types they are. The procedure for calculating snow guards for a soft roof and the price of such construction material... At the end of the article, you can find a video about the installation of snow hooks.

Snow holders are used to evenly distribute the snow load on the roof surface. Also, such a safety tool prevents an avalanche of snow and ice, which will now slide down in even small portions. In general, snow protectors for soft roofs are a fairly common material that can be bought at almost any hardware store.

A soft roof has its own characteristics. The most important of them is that the angle of inclination of such a roof should be no more than 15 0. In addition, the surface of the coating is rough. Therefore, the snow will melt from it, and so gradually. In this regard, too massive devices are not required.

Snow protectors for soft roofs are quite compact devices Source blogremonta.com

Since the load is expected to be quite light, tubular snow stops or small snow cutters called hedgehogs can be used. It is worth noting that snow protectors for soft tiles do not require introduction into the structure. roofing cake no changes. After all, a solid base is installed under such a covering, on which snow stops can also be fixed.

Types of snow holders for soft roofs

All snow guards for soft tiles, regardless of type, are necessary in order to direct the snow into the gutter with a smooth flow.

Since a soft coating in itself retains snow well, so-called teeth... Despite the fact that there is an opinion about the senselessness of such a device, it really increases the wear resistance of bituminous tiles. The fact is that, descending like an avalanche, the snow strips off the stone dusting on the surface of the coating. And this will negatively affect the microclimate in the room, since the soft roof has high thermal conductivity, and the temperature inside is much higher if there is a layer of snow outside.

One of the most common types of snow holders for soft roofs is hooks. Such a device is necessary not to hold the snow layer, but to increase the frictional force against the coating. The hooks are small metal plates with the end bent up. They are staggered and form something like a grater, which evenly distributes the load and holds the entire layer. It is important to note that such snow cutters are installed only during the installation of the roof, since their plates go under the segments of the shingles.

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Another common type of snow holders is a corner bar. This is a galvanized corner made of steel with a thickness of 0.45 - 0.8 mm. The length of the device is 2 m. When using this technology, the snow does not come off the roof at all, but lies on it until it melts. Moreover, a gap is left between the corner and the roof, through which melt water should leave.

A corner snow holder is the simplest and cheapest option. But the problem is that steel that is too thin may not withstand the pressure on it and break.

There are also other types of shingles for shingles. For example, tubular snow stops, which are small-diameter tubes mounted on special stands ... Lattice snow cutters are installed on high-rise buildings, and lamellar on roofs with a very small slope.

The original type of snow holders is a rounded log fixed along the entire perimeter of the roof. In this case, the distance from the cover to the snow stop should be 2-4 cm.

Calculation of the number of snow holders on the roof

There is a clear algorithm for calculating the length of tubular, lattice and corner snow guards. The first step is to measure the length of the roof slope. Then the length of the overhang is determined. Ideally, it is all covered by at least one row of snow holders. Next, using a goniometer, the angle of inclination of the roof is measured. And the last thing is worth finding out which of the eight snow regions your region belongs to.

Now you need to compare the obtained data with the proposed table derived for calculating snow guards for a soft roof:

The value obtained from the table must be divided by the length of the slope. If you get a value less than one, then one row is enough, if more, then a second is needed. The number of rows is now multiplied by the total length of the overhang and the result is the required length of the snow guards. If the second row is also needed, then the perimeter of the slope is added here at a distance from the first row, obtained from the table. But, as mentioned, this system is suitable for calculating tubular, lattice or corner snow holders. Also, in this way, you can calculate the length of the snow retainer-log.

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The cost of snow guards for a soft roof

Before you buy snow protectors for soft roofs, you need to find out the price for them. In general, such a building material is quite affordable and widespread. In almost any hardware store, you can buy almost any type of snowstop.

First, about the price of hooks. They need to be installed in a checkerboard pattern at a distance of 50-70 cm from each other. So on square meter there are about three hooks, each of which costs 35-70 rubles.

The Tekta tubular snow guard will cost 750 rubles per meter, with three supports per meter. The Prestige model costs about 1200 rubles. Lattice snow holders for shingles are much more expensive: for a fairly inexpensive option, you will have to pay at least 2,000 rubles. The thing is that this type of snowstop is more difficult than others.

If you want to make a snow guard from a rounded log, then a material with a diameter of 100-140 mm is suitable for you. Such lumber costs about 6,500 rubles per cubic meter. Plus, you need to add racks here, of which 3-4 are required for each meter of the snow holder. One support costs about 250-300 rubles.

Video instruction for the installation of snow guards for soft roofs

Video description

This video contains a description of the correct and consistent installation of shingles, drainage systems and, most importantly, snow hooks:

Conclusion

Snow protectors are a nice addition that won't get in the way of any home. If we talk about a soft roof, then snow cutters and snow stops will not only extend its service life, but also keep the snow on the surface, which will contribute to better heat retention. But the most important thing is safety, namely the snow holders will be able to protect you and your family from the sudden disappearance of the snow cap.

When buying roofing material, almost everyone asks the question: is it worth buying snow holders for the roof or can you do without them? Let us analyze in which cases it is imperative to install safety elements, what they are for and what type of snow holder is suitable for a particular roof.

Types of snow holders: tubular and lattice elements

A snow retainer or snow stop is an additional element of the roof that prevents a sharp descent of the 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 deflector. In terms of shape and purpose, all roofing snow holders can be conditionally divided into the following types:

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

The first two types can be classified as universal safety elements, since they are suitable for almost any roof. Tubular snow holders 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 lags 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 pieces, respectively. Usually builders purchase 3-meter elements, which, if necessary, can be cut into required sizes... Tubular types of snow holders usually differ in the design of the supports. In the universal type, it has a flat, even surface, which allows the element to be installed both on metal roof(metal tile, corrugated board, seam roofing), and on flat material(for example, shingles).

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

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

Snow guard for standing seam roofs

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 using special brackets that are tightened with bolts.

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

Tubular snow guard for ceramic and cement-sand tiles

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

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

Snow holders for metal tiles and corrugated board

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

Specialized snow guard supports for Monterrey profile metal tiles have a characteristic step for easy attachment of the lower part of the support through the roof to the lathing.

The range of additional elements of metal tiles include metal slats for snow retention... They are produced in lengths of 2 meters.

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

Aquasystem company specializing in the production of drainage systems and roofing accessories, offers another solution for metal shingles.

Snow retention elements for shingles (soft roofs)

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

After installation, the attachment point is closed with the next layer of shingles. 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 on the soft tiles ordinary tubular snow holders with a universal flat support (bracket).

Snow retention on Ondulin

For different types corrugated bituminous sheets of the "euro-slate" type (Ondulin, Nuline, etc.) are also installed tubular snow-holders by analogy with metal tiles or corrugated board. In order not to damage the roof, for Ondulin it is necessary to select a snow holder, 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 at the attachment points for sealed installation to the crate.

Metal slats or lattice systems can also be used as snow guards.

Calculating the number of snow holders

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

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

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

We combine the values ​​and we find that when installing the brackets (supports) of the snow guard after 800 mm, 1 row of elements is required with a slope length of up to 7.2 meters. Since 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 guards, depending on the slope of the roof and the snow area:

Installation instructions for tubular snow guards

Before proceeding with the installation of roof snow guards, read a number of recommendations:

• It is advisable to use a solid lathing at the place where the brackets are attached (SNiP II-26-76 "Roofs").
• Can't be cut snow retention pipes using an abrasive tool of the "Bulgarian" type.
• To achieve the required length and improve rigidity, tubular snow retention systems are installed in one line, not staggered.
• An additional row is installed above protruding roof objects (roof window, chimney or ventilation pipe, etc.) or next to vulnerable areas of the roof (valleys, abutments).

The snow holder is mounted in the lower part of the roof, flush with the wall of the building facade or slightly higher (taking into account the step of the wave in the case of metal tiles).

Important: when installing on metal tiles, the brackets are attached strictly down the waves of the roofing material!

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 extreme 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 staggered. 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 an attachment to the support of the snow retainer to the lathing significantly reduces the level of snow load. Use the hardware supplied with the kit.

We also offer you to familiarize yourself with a short video instruction on the installation of snow guards from the manufacturer of roofing materials Grand Line.

Snow retention systems are the only reliable protection against avalanches during the thaw period. Only they will help to protect people and property from a sudden fall of several hundred kilograms of snow and ice.

Snow holders are products made of steel flat oval pipes attached to the roof with brackets. Thanks to a well-thought-out design, during the thaw period, the water flows freely, and the non-melted snow mass is retained.

Advantages of Borge roof shingles:

1. Durability... NWT are made of durable zinc-plated steel pipes and painted with weather-resistant paint. Thanks to this, the metal is reliably protected from corrosion, which significantly increases the service life of the snow guards.
2. Efficiency... NWT Borge better cope with the load and better protect the gutter system from damage compared to lattice snow barriers. In most cases, one row is sufficient, and this will provide reliable protection against sudden melting of the snow mass. In some cases, 2 or more rows may be required. To calculate the number of snow holders, use the instructions or contact a specialist.
3. Roof safety... The Borge soft roof snow retainer is designed in such a way that the integrity of the roofing material is not compromised during installation. Thus, you get reliable protection and preserve the warranty on shingles.
4. Availability... The cost of NWT is tens and hundreds of times lower than the potential damage to property and health of people from an avalanche. And thanks to their long service life, you will not have to change them for decades.

Buy snow holders for soft roofs (flexible shingles) on the roof with delivery and installation in the GoodRoofing company (Best roof). The price is on the website.

Is the installation required

In the case of roofing with soft roofing material, it is important to understand in what situations it is advisable to carry out snow retention, and when it is better to simply save money. Qualitative criteria for assessing the need for installation are the following:

1. A large amount of precipitation, which a specific roofing structure cannot cope with, and there is a high probability of large snow masses descending. In this case, the angle of inclination of the slopes should be more.
2. The surface of the roofing material has significant roughness, which prevents the timely removal of falling snow from the roof and favors the formation of an ice crust as a result of sudden temperature changes. A striking example is bituminous shingles.
3. There are objects near the house, damage to which is unacceptable, or a pedestrian path has been laid.

Attention! If the angle of inclination of the slopes is up to 15 °, at which the likelihood of snow falling off them in large quantities is minimal, then this does not mean at all that snow holders should not be installed on a soft roof, which is especially true for the northern regions. It is important to ensure safety in any situation. In this case, this will allow you to save money and purchase point snow holders instead of tubular ones.

A snow guard designed for shingles can only be omitted if the roof is used in hot or dry climates, or with minimal rainfall. In other cases, it is simply necessary to buy snow-retaining structures, since they will cost much less than the cost of restoring a roofing cake and soft sheathing.

The snow guard is the most commonly installed roof safety element. Its purpose is to prevent avalanche snow and ice from the roof. The snow holder protects the life and health of people, the drainage system, the slopes below, as well as other property under the cornice (car, fence, trees, etc.).

In UNIKMA you can buy sets of snow guards and additional supports for all models. Thus, you can configure the snow retention system in accordance with the design loads for your roof (). You can also buy tubes, nets and gratings from us if you need to repair damaged snow guards.

Kits, additional supports and tubes / nets / grates are combined into kits. This makes it easier to find accessories for your snow retention system. The entrance to the kits is possible from the kit card.

What you need to know when choosing a snow retention system?

1. It is advisable to install a snow guard during the construction of the roof. In this case, the roofers will prepare the roof in the best possible way, securely fix the snow holders, the cost of the work will be minimal, that is, the maximum quality will be obtained and at the minimum cost.

2. Installation of snow guards after roof construction is possible in most cases, but not always. Each case requires the involvement of an experienced roofer to assess the feasibility and select a model that takes into account the type of material and the characteristics of your roof.

3. Snow protectors should be installed on the roof only based on the results of load calculations. The type of roofing, the angle of the slope, the geometry of the roof, the presence of pipes and skylights, the snow load, the bearing capacity of the supports of the snow holder are taken into account. The result of the calculation will determine the step of installing the supports and the number of rows of snow guards on each slope.

4. Tubular and lattice snow guards should be installed in a row with the connection of the tubes / grids to each other. If a different solution is applied, it should be taken into account in the calculation.

5. UNIKMA is the competence center for snow retention systems for pitched roofs. We have experience in installing snow holders since 1999 for new construction, repair and reconstruction of roofs, for many years we have been observing the behavior of snow on roofs of various types, have developed and use a special stand to study the bearing capacity of the supports of snow holders, have developed our own method for calculating the pitch of the supports and the number of rows snow holders, we conduct seminars for builders-roofers on the calculation and installation of snow retention systems, we recommend specialists for the installation of snow holders.

The selection of a snow holder is a rather complicated process, in which many factors must be taken into account:

• in different models, the thickness of the steel of the supports, the cross-section of the tubes differ, which directly affects the bearing capacity of the snow holder;
• the required number of rows of snow retention and / or the step of installing the supports depends on the bearing capacity of the snow holder;
• the selection should take into account the coefficient of friction of the roofing and snow / ice massif, the length of the slopes and the angle of the roof.

Hard? Perhaps.

The selection of a snow guard is the job of an engineer, whose task is to find the optimal solution, taking into account the nuances and characteristics of materials and systems. Simplification in this work leads to averaging, and averaging to one of two results: either we pay for excess strength, or we get insufficient strength

Step 1. Determination of the bearing capacity of the snow guard

The value of the bearing capacity of any model of a snow guard is checked on a test bench developed by UNIKMA. The stand can simulate two types of loads acting on the snow guard: along the slope and perpendicular to the slope.

During the test, we check three elements:

• joint work of supports
• roofing material
• structural elements

Based on the results, we conclude about the bearing capacity of the support "in the system". In short, we call this parameter "bearing capacity".

For each roof covering, we have introduced four classes for the perception of snow load (see).
For metal tiles, folded roof, composite roof tile and corrugated board these classes correspond to a load of 300, 250, 200 or 150 kg per 1 support, taking into account the method of attachment and impact on the roofing material.
For piece shingles loads should be less in order to reduce the likelihood of splitting the tiles under the support of the snow retainer. The load is lower: 250, 200, 150 or 100 kg per 1 support, taking into account the method of fastening and impact on the roofing material.

Step 2. Determination of the number of supports, the number of rows and the distance between the rows of snow holders

The easiest way is to use tables that can be easily found on the Internet. These tables came to us from Scandinavia along with the Swedish standard (sometimes in the Finnish version). These tables do not take into account the "support class", the distance between the supports and the type of roofing material.

Until we learned to define permissible load on the support, taking into account the method of fastening and did not learn to take into account the material, we also used averaged tables. We now have a more convenient and accurate tool. We hope that with its help you will be able to choose a reliable snow guard for your roof.

Tables for the selection of the step of installing the rows of snow guards

The calculator fully complies with the UNIKMA standard for calculating the loads that the snow guard must withstand. In the calculator, you can set the angle of inclination and length of the slope, the distance from the eaves to the first row of snow guards, the step between the supports, the permissible load (from 100 to 300 kg per 1 support), the type of roof and the region in which you are building the house.

On our website you can find sets of snow guards for any roof covering, additional supports and tubes / lattices. We are also ready to find an experienced roofer to install a snow guard on your roof.

Still have questions? Contact us!

Installation of a snow retention system on a new or reconstructed roof for a private customer is much easier and cheaper than installing a snow retention system on a finished roof. In the case of a new roof, the builder knows how the roof is planned to be built, calculates the loads, chooses the optimal snow retention system for your house and roof covering, and prepares the roof structure in the best way.

If you plan to install snow guards on a finished roof, you need to consider several nuances:

Secondly, the requirements for the qualifications of roofers are increasing. We have already talked about the calculations of loads and the determination of the number of rows and supports. Here, these prerequisites are added to the ability to assess the reliability of the existing roof structure and to find the right places to fix the supports.

Third, accounting for the installation time. Do not postpone editing until October / November. During this time, builders are trying to complete the construction of the houses that began construction this year, and the roofers have a lot of work to do - they will strive to make the most of the days with good weather. At this time, it is difficult for them to be distracted by small amounts of work that require the movement of teams and the installation / removal of scaffolding.
Spring is the ideal time to install snow retention systems. At this time, roofers have more free time and at the same time they can carry out a full inspection and maintenance of the roof.

Select a roofer from the list using the link. You yourself call and negotiate with the builders.
Send a request to all roofers who are installing snow holders on finished roofs. No more than three builders will contact you within 24 hours. In this case, the roofers will call you. A dedicated employee of UNIKMA company monitors all applications and will help in case of difficulties.

Our builder selection service has been operating for over 10 years. All this time, our goal has been and remains the desire to help our clients buy good material and correctly mount it on their home.