The modern owner should be aware of the benefits of using snow retainers in the fight against natural elements. The article contains useful information about the criteria for selecting snow retainers for the roof and about the intricacies of installing the system on a roof made of metal. You will get acquainted with the popular types of snow retention systems, from tubular and corner, to lattice and tow.
How to extend the life of the roof Source kryshikrovli.ru
The need for a snow retention system
There are many requirements for the roof of a country house, it must be reliable, practical and beautiful; Another mandatory characteristic of the roof is its safety. It is this quality of the roof structure that deteriorates sharply in the cold season in places that are characterized by long and snowy winters.
Weightless, fluffy snow flakes, falling on the roof, have the unpleasant property of lingering on it, and over time, compacting. In a short time, the snow layer grows to a considerable thickness, having time to melt several times and then freeze again. As a result, a dense and heavy layer of snow with ice layers is formed, ready to slip (and slip!) from the roof surface at the most inopportune moment. If at this time a person, animal or, for example, a parked car is under the roof, falling snow can cause (and, unfortunately, often does) considerable damage. Plants planted near housing may also be affected.
Recently, he was fluffy and light ... Source tolknews.ru
The problem of a sudden melting of a mass of snow is common for residents of northern countries, and snow retention on the roof of a house is a standard solution to the problem. For this, snow retainers are used, special devices that do not allow the snow to come off completely at one time. In addition to preventing the sudden disappearance of the snow cover, the device also performs some additional functions:
Make roof cleaning easier from snow.
Protect the drainage system from violation of the integrity of the connections and breakage from the fasteners.
During the thaw keep the snow on the roof, allowing it to melt safely and run down gutters.
Protect canopies and awnings buildings (falling pieces of ice, compressed snow and icicles can seriously damage them).
Additionally protectpleasesroofingwowdesignsYu during storm winds.
Solution Source ametiststroi40.ru
The principle of operation of roofing snow blocking systems
The installation of snow retainers on a metal roof is especially relevant - a smooth polymer surface cannot seriously prevent the snow mass from sliding off. If the bottom layer of snow has turned into an ice crust (which happens in 70-80% of cases), it will inevitably damage the surface of the sheet when it comes off. Scratches will become sources of corrosion, and the roof will not last as long as it should.
Three factors influence the choice of snow retention system:
Ramp angle.
Snow cover characteristic for this region.
Type of roofing.
The snow retainers presented for sale can be divided according to the principle of operation into two groups:
snow cutters. This design is designed to pass the snow in small portions, in parts. The principle of its operation is not to stop (and accumulate) a layer of snow, but to divide it into fragments. Design advantage: a large amount of snow is not collected on the slopes, which loads the truss frame. It comes off gradually and is not capable of causing damage. Another plus is that snow cutters can be mounted on the roof of any steepness.
One of the options for placing snow retainers Source remoo.ru
snow barriers. They completely block the snow melt; so that the accumulated snow cushion does not deform the roof and truss system, snowdrifts will have to be regularly removed manually. The installation of snow barriers-barriers is justified only for a solid, with a solid bearing capacity, construction.
Roof snow retention systems: popular structural solutions
As a rule, snow blocking systems are purchased at the stage of housing construction, simultaneously with roofing material (but nothing prevents them from being purchased later). You can choose from one of the following types:
lattice. Such structures are widespread and are successfully used for various types of roofing, including metal tiles. There are several types of products on the market that differ in the complexity of execution and features of the supporting parts. Relatively high gratings can perform an additional function: serve as a security barrier in the summer, during repairs.
The possibilities of the lattice system clearly Source tr.decorexpro.com
On our website you can find contacts of construction companies that offer roof repair services. You can directly communicate with representatives by visiting the exhibition of houses "Low-Rise Country".
Corner(lamellar). A budget option that can be chosen if snow accumulation is insignificant. Corner-type snow guards are easy to manufacture and install, which ensures their popularity, including for metal tiles. It looks like a galvanized steel corner; a wide range of shades of a protective polymer coating allows you to choose products that are most suitable for the color of the roof. They are allowed to be used on the roof, whose slope angle does not reach 30 °.
Corner snow retainer Source yandex.uz
Tubular. If snowy winters are common, tubular construction is an ideal choice, especially for seam or metal roofing. With frequent and prolonged snowfalls, tubular structures are recommended to be installed in several rows.
Tubular construction Source zemeljka.ru
Point(rope). A relatively new type of device for regions with light and medium snowfalls. They evenly distribute snow pressure over the roof and additionally serve as a foothold. Various roofing materials require the use of products of a certain shape; snow retainers suitable for soft roofing cannot be installed on metal tiles.
Made of polycarbonate ( jagged). They are a kind of point snow retainers; The products are transparent, non-corrosive and easy to install.
Budget option Source stroypay.ru
Horseshoe snow guards. A kind of point system; has a characteristic curved shape and is made for certain profiles of metal tiles, which facilitates installation.
Snow guards-logs. The original systems that protected alpine dwellings from snow and in some places have survived to this day; in the modern version, the role of logs is performed by metal pipes with a diameter of 130-150 mm. The tubular structure effectively holds the snow layer, confidently coping with high pressure.
Criteria for choosing and calculating the system
In order for the snow blocking system to adequately perform its functions, the type, number and location of snow retainers is calculated on the basis of the rules of SNiP 2.0.10.07.85. Proper installation involves drawing up a project for the location of the blocking elements on the slopes. This approach helps to avoid that unpleasant situation when it turns out that there is no crate under the drilled hole.
Video description
About Finnish polycarbonate snow guards in the following video:
System parameters are calculated based on the following conditions:
Type of roof and its angle of inclination. The larger the angle, the more pressure the snow will exert on the system. If the angle exceeds 15 °, experts advise installing tubular-type snow retainers, as the most reliable.
Surface area of slopes and type of roofing material.
Precipitation during the winter in the area. Maps and tables have been developed showing the average values of snow load by region.
The result of the work is the arrangement of snow retention elements on this type of roof. It defines the following parameters:
Type of snow retention elements.
Place of attachment. The system is installed parallel to the cornice overhang, with the first row placed above the load-bearing wall; this helps to keep the load on the overhangs to a minimum. The remaining tiers are mounted one and a half to two meters from the first.
Places of obligatory fastening of snow retainers Source stroimmaster.ru
Number of rows and pitch between fasteners. The distance between the brackets is determined by the length of the slope and the slope (the stronger the slope, the closer the parts are to each other).
Fastener order. Systems of tubular, lattice and plate type are mounted in rows; drag and corner - in a checkerboard pattern.
Color. If the emphasis on the snow retention system is not included in your plans, snow retainers are matched to the color of the roof or one or two shades darker than it.
Equipment. The kit necessarily includes roofing screws and gaskets made of special rubber. They make the attachment points airtight.
Video description
About tips for choosing snow retainers in the following video:
Tubular snow guards for metal tiles
Metal tile, due to its properties, is available, popular and therefore more widespread than other roofing materials. But its surface is smooth, sensitive to temperature changes, and is not able to hold melted snow for any long time. This property makes the installation of snow retainers on a metal roof an urgent need. For a roof made of metal (as well as corrugated board), the following types of snow retainers are suitable:
lattice. Reliable, easy to install, versatile in execution.
lamellar. Suitable for slopes with a small angle of inclination, they are more often used where winters are short and with little snow.
Tubular. Leading in frequency of use.
Universal tubular snow retainer Source celinrmo.ru
Tubular structures are considered to be the most universal category. They are designed for high pressure, reliable in operation, safely divide the layer of snow into small fragments. They are also widely used in the protection of tiled and soft roofs. Tubular snow retainers are mounted on metal tiles following several rules:
Parts are fastened through the roof.
Installation is carried out after crate reinforcement, the basis for fixing the details of the system.
To prevent the metal sheet from being deformed, a hole is drilled in the concave (lower) part of the wave, at the point of contact with the crate.
Fixing points sealed with rubber gaskets.
If you have chosen lamellar or corner snow retainers, you do not need to reinforce the crate, since they are mounted directly into the sheet. The choice of models of snow retainers, working on the principle of snow cutters, allows you not to worry about the timely cleaning of the roof - even in a strong snowstorm, the snow will melt in safe portions.
Video description
About the rules for installing snow retention devices in the following video:
Additional types of snow retainers for metal tiles
In addition to the ubiquitous tubular snow blockers, it is allowed to install other types of snow blocks on a metal roof, including:
lattice. By design, they resemble tubular systems, only the role of the delay pipes is performed by a grate, the size of which (height) can vary. Such barriers hold snow well, but are sometimes able to sag under its weight. The grating works particularly well on steep roofs (when the slope exceeds 35-40°).
Corner(lamellar). If the angle of the roof slope is small (up to 30º), and there is little snow in winter, you can limit yourself to installing a corner system. Corner snow retainers have a height of up to 6 cm; on the roof they are arranged in several rows in a checkerboard pattern. The system is not designed for high pressure, and the roof will require periodic manual cleaning.
Point(yokes, hooks). They are used mainly on flat, rough (soft) roofs. On metal roofs, point systems are used as an addition to gratings and pipes.
The plate system is ideal on a flat roof Source roofos.com.ua
Ordering the installation of turnkey snow retainers
The price of snow retainers is comparable to the costs of periodic cleaning of the roof and repairs, inevitable with uncontrolled descent of snow layers. Installation of snow retainers on the roof is a popular service provided by many construction organizations, often in parallel with the arrangement of the roof. Turning to specialists allows you to get full protection of the roof structure and the surrounding space. The price of installation of snow retainers is calculated per linear meter; it depends on several parameters:
Roof type and roofing material.
house heights, the difficulty of access to the roof.
Vida selected system snow retention.
Scope of work(depending on the size of the roof and therefore the number of snow retaining elements)
Necessities preparatory work.
Contacting the company allows you to get additional benefits:
The quality of the system is affected installation time, the best option in terms of price / quality ratio can be obtained simultaneously with the arrangement of the roof.
Installation of pipe system brackets Source sense-life.com
The system is installed according to the manufacturer's recommendations which increases the service life of the structure.
Roof equipment with snow retainers involves get a job guarantee(and sometimes the material). If during this time a defect is detected, it is eliminated free of charge. If there are no problems during warranty service, they most likely will not continue.
Conclusion
Snow falling from the roof is an actual problem for a significant part of the Russian territory. Modern technological solutions in the form of installing snow retention systems are able to reduce the terrible consequences to a minimum. For a metal roof, the best solution would be the installation of reliable tubular snow retainers by professional builders.
The climate of most of Russia is famous for its frosty, snowy winters, so our people have developed a special attitude towards the cold. Therefore, snow is an indispensable participant in children's games and winter fun. However, the snow may not be so harmless, especially when it flies from the roof onto your head. Unorganized, avalanche-like snow masses from roof slopes often cause injuries, injuries, damage to cars parked nearby and blockages on driveways. A comprehensive solution to these problems is the installation of snow retainers.
Roofs made of metal tiles especially require the installation of snow retention elements, since the smooth surface of the slopes makes it easier for the snow cap to slide off. The ice crust, which is formed when the lower surface of the profiled sheet is heated with warm air, leaves deep scratches on it when it comes off. In damaged places, where the protective galvanic layer is broken, corrosion centers appear. To prevent premature failure and roof leaks, snow retainers are used that work according to the following principles:
Important! The selection of devices for snow retention is carried out taking into account three criteria: the amount of precipitation in winter, the angle of inclination of the slope and the roofing. When choosing snow retainers for metal tiles, pay attention to models that work on the principle of a snow cutter. Due to the fact that snow is independently removed from the roof in a safe way, you can not be afraid to leave it without cleaning even in heavy snowfalls.
Types of snow retainers
Snow guards for metal tiles are available in the form of snow-blocking and snow-permeable structures. They are made from durable, high-quality metal, since each element is subjected to significant loads. The following types of snow retention elements are most popular:
Important! The cost of one or a lattice structure 3 m long is 1000-1500 rubles, which can negatively affect the homeowner's family budget. In order to save the elements for protection against falling snow, they are installed only above the places where the descent causes the greatest inconvenience: over the porch, paths, parking.
Mounting
The installation of snow retention elements is planned during the design of the roof, as they increase the snow load on the truss frame and foundation. In advance, you need to decide on the design and principle of operation of the devices, since some of them require special conditions. The installation itself is quite simple and is done by hand in the following order:
Note! Usually one row of tubular devices is sufficient to contain snow masses on the roof. But if the amount of precipitation in the winter in the area where construction is being carried out is above average, and the length of the slope exceeds 5 m, then professional roofers recommend installing an additional row that reduces the rate of snow melting.
Video instruction
In most Russian regions, a significant amount of precipitation falls in the form of snow in winter. An avalanche descent of snowdrifts from the roofing surface can not only cause material damage - it poses a threat to the health of passers-by. Installing snow retainers on the roof will help to avoid such problems.
Types and design features
Snow guards are designed to hold snow in order to prevent its avalanche-like descent 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 you to retain snow, but at the same time passes moisture that forms during the melting process without any problems. These devices are equipped on the pitched roofs of buildings in the process of laying roofing.
Depending on the design of snow retainers on the roof, they are of several types:
- snow barriers. This name was given to blocking type fences. Due to their presence, the snow lies on the slopes until the moment of natural melting. These products exclude the possibility of a collapse of the snow mass. These include a corner snow retainer and a yoke.
- snow cutters. They do not hold snowdrifts on the slope, but separate them into separate parts, in which the falling speed and the degree of mechanical impact are much less. These devices will not protect a person from the collapse of a snow cap from the roof, but this process will become much safer. Snow cutters include tubular and lattice products.
Before installing snow retainers, it is necessary to determine which type of device will be the best solution, which will require the following information:
- the amount of average annual precipitation in the region;
- the size of the slopes and their steepness.
They install snow retention along the overhang of the roof slope, but if necessary, save devices are mounted in places where the snow mass is the most dangerous.
Why do we need snow retention measures?
Building designers typically prefer steep slopes when choosing roof configurations because they handle rainfall more efficiently. But in winter, when the water freezes, the advantage of such roofs turns into a problem.
Snow retention activities are necessary for a number of reasons, as they:
- Provide security. As a result of the uncontrolled fall of a snowdrift 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 mass of snow, and can also divide it into smaller parts. But at the same time, you need to know how to properly install snow retainers on the roof and then they will function as efficiently as possible.
- Protect roofing. Snow under certain conditions turns into a crust of ice. Sliding off the roof, it can scratch the material, while removing the protective coating from it. In the place where scratches appeared, corrosion processes begin, leading to damage to the roof. Often a similar problem is relevant for metal tiles, corrugated board and rebate.
How to 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 bearing wall of the building along the slopes.
To give strength, the lower pipe is fixed above the slope surface at a height not exceeding 3 centimeters. Between the tubes there should be a distance of 8 - 10 centimeters. If the steepness of the slopes exceeds 60 degrees, the rules for installing snow retainers provide for their placement in two rows with an interval of 2 to 3 meters.
Consumers are offered devices made of galvanized steel, which are coated in harmony with the most popular colors of roofing.
lattice
They look like a grid. Proper installation of snow retainers of this type provides for their mounting on a slope using brackets. Lattice devices are made of the highest quality alloy steel, so they are resistant to corrosive processes.
The height of the lattice 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:
- Versatility. Brackets provide the ability to mount snow guards on any roofing material.
- Reliability. Lattices are able to withstand massive snow layers even when the slopes have a large area and a large slope.
- Easy to install. Following the instructions on how to properly install lattice-type snow retainers 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 that, the grating is inserted into the fasteners.
- Variety of colors. You can buy devices of various colors, due to the presence of a paintwork. If you choose the right shade, the snow retainers will not be visible against the background of the roofing.
Installation on the roof of angle-type snow retainers - how to mount
If the roof is made with a slight slope and its structural device does not allow the snow mass to roll down to the bottom, in regions with low rainfall, corner snow retainers are installed. They look like corners with mounting shelves up to 10 centimeters high and 20-30 centimeters long.
In the description of the manufacturers, which deals with how to properly mount snow retainers on corrugated board, metal tiles, sheet metal, it is said that angular products can be mounted on roofs with a slope of no more than 20 degrees.
The procedure for installing corners for retaining snow differs from the process of how to mount other types of snow retainers on the roof. They need to be arranged in several rows in a checkerboard pattern along the roof slopes. Between the rows, a distance of 50-100 centimeters is observed - 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 at the same time save 50% of the cost of devices manufactured at industrial enterprises. There is nothing complicated about how to properly install corner-type snow guards. They are attached to the roofing material using a screwdriver.
Installation of point snow guards - yokes
These devices - yokes have the shape of a triangle with a long bar designed to fix them on the slopes of the roofs. They are in demand for mounting on slopes covered with soft materials with a rough surface, which are produced on the basis of bituminous mastic. Hence, their ability to hold snow masses is negligible. The 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 retainers of this type:
- Usually, yokes are mounted complete with snow holders of a different design - lattice and tubular barriers.
- The yokes are placed in a checkerboard pattern in rows along the roof overhangs, observing a gap of 50-60 centimeters between adjacent devices and a distance of 50-100 centimeters between rows.
- Installation is carried out simultaneously with the roofing flooring. Before fixing the snow retainers on the roof, mark on the crate how the rows will be arranged. The fixing stick of the devices is fixed on the boards with self-tapping screws and then covered with sheets of shingles.
You can buy such yokes in construction supermarkets or make your own hands from sheets of metal. Industrial products have a neater and more attractive look, but homemade devices are just as effective.
The process of attaching snow retainers to the roof is not as complicated as it might seem at first. The technology for performing such work can be mastered even by beginners in the construction business.
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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 two-row metal pipes passed through them. 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 made of metal materials (metal tiles, galvanized steel, etc.). Such systems are not designed for increased loads and, as a rule, are ineffective.
Mounting
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;
- in this case, the lamellar elements are attached to each wave of the metal tile, while the corner elements are fixed in each wave along the upper row and through the wave - along the lower 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 essential, 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 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. From this, an interesting conclusion follows 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 a special design of roof ladders or stairs 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:
A photo
In areas with snowy winters, the installation of snow retainers is a mandatory step in the construction of the roof. A large amount of snow that has fallen in the wrong place can damage the roofing material, the roof structure itself, wires, air conditioners and ventilation systems, and even cause injury to people.
Types of snow retainers
According to the type of construction are:
- tubular,
- lattice,
- lamellar
- hooks.
Tubular snow retainers - metal pipes threaded in 2-3 rows into special holders installed on the roof. The retained volume of snow depends on the thickness of the pipes, the distance between them and the roof, between the fasteners. The advantage of this design is the ability to increase the length and increase the allowable load by more frequent arrangement of fasteners and pipes.
Lattice snow guards are like a ladder mounted on an edge across the roof. They are made of a metal profile or corner and are just as easy to lengthen and strengthen as tubular ones. Lattice and tubular types are the most versatile and reliable, they can be installed on roofs, both from natural tiles and from sheet materials.
The plate version is able to hold a smaller amount of snow, but is the least noticeable on the roof. They are usually made from the same material as the roof itself, and they are more suitable for flat roofs made of metal profiles, metal tiles, etc.
Hooks also retain a small amount of snow and are usually installed on roofs covered with soft materials: ondulin, shingles.
Lamellar snow guards and hooks are cheaper and easier to attach, so it is quite possible to use them in regions with little snow or short winters. The roof on which they are installed should have a slope of no more than 30 degrees. One of the varieties of the lamellar snow retainer is the corner ones, which in the section are a triangle.
It is necessary to decide which type will be used even before starting work on, since it is better to fix them at the same time as the roofing material. An exception can be made for tubular and lattice structures, but for them it will also be necessary to provide reinforcement of the crate. They can be mounted on the roof of any material. Their number and frequency of location depend on the amount of snow falling on average during the winter.
Fastening rules
When planning the installation of snow retainers on the roof, a number of rules must be taken into account.
- The crate in the places of the proposed installation must be reinforced, and the elements should be attached only to it.
- The lower element should be located at least 40-50 cm from the edge of the roof.
- Snow guards are located across the roof, parallel to its lower edge.
- They can be located in a line (preferably for tubular and lattice) or in a checkerboard pattern (lamellar and hooks).
- If the roof area is large, then several rows are arranged with a distance between them of 35-40 cm.
On roofs with a large slope, about 60 degrees, you can avoid installing snow retainers, since the snow comes off on its own. However, strong winds negatively affect such a roof, and more materials are needed for its construction.
Preparatory stage
Even during the construction of the crate in places where snow retainers are supposed to be fixed, it must be reinforced with a board with a thickness of at least 25 mm. Subsequently, fasteners will be mounted to it. All installation work, as well as other roofing activities, must be carried out with insurance, observing safety precautions.
Installation of snow guards
The delivery set usually includes the pipes themselves, a grate or snow retainer profile, a support element, and a decorative overlay. First, the places for future installation are marked on the roof, and a lining element is attached to the roof. For corner snow retainers, the decorative overlay rests with the side directed upwards on the lining, for lamellar ones it is superimposed from below in the direction of the roof. The lamellar one is screwed onto each comb, the angled one is screwed onto each comb from above and through one from below.
If there is a skylight on the roof, a snow retainer must be installed on top of it.
For fastening, it is important to use galvanized self-tapping screws, preferably with a rubber cap, to prevent rusty drips on the roof. Mounting holes are sealed with rubber gaskets and waterproofed with sealant.
Important! The installation of snow retainers does not relieve the need to clean the roof of snow. Thanks to these structures, snow accumulates on the roof and increases the load on it. As a result of the large weight of snow accumulated on the roof, the snow retainers themselves may break and the roofing material may sink.