Installation of snow caps on the roof of the corrugated
On the territory of Russia, pitched roofs on which snow does not linger are more popular. However, the problem of steep slopes is a spontaneous gathering of snow masses, threatening the health and even the lives of people passing by. Roofs from materials with a smooth surface, in particular, a professional sheet, suffer more than others. To prevent snow from slipping, special devices are used, in everyday life they are called snow protectors. This article will tell you what measures of snow retention are applied to the roof of corrugated boarding and how to install devices that prevent snow collapse with their own hands.
Functions
Russia is famous for frosty and snowy winters, and in some regions the cold season lasts 8-9 months. Snow accumulating on the slopes increases the load on the roof frame and the foundation of the house, so most buildings are erected with a steep roof, the slope of which is not less than 35 degrees. And if a professional sheet, a material with a smooth, slippery surface, is used as a roof covering, then the snow immediately slides off on its own. Warm air rising up from heated premises heats the roof, due to which an ice crust forms on it.
Self-installed snow shields relieve homeowners of the following problems:
- They hold the snow masses on the roof of corrugated board or profista until they melt under the action of the sun. In this case, the melt water enters the drain, and then into the storm sewers, without eroding the blind area of the foundation or approach paths.
- Snegozaderzhateli cut snow cap, located on the roof of the profiled sheet, on thin layers, the fall of which will not cause harm to randomly pass.
- The installation of snow stoppers protects the roof drain from the corrugated board from deformation, preventing the snow masses from slipping there.
Important! The ice crust, which is formed on the roof of the profiled sheet due to thawing of the lower layer of snow, during the descent from the slope, scratches the surface of the roof. These scratches in the future with the penetration of water will become foci of corrosion, leading to premature destruction of the material. This problem is solved with their own hands installing snegozaderzhateley.
Principles of snow retention
Typically, devices for holding snow on the roof are matched to the roofing sheet in color and material. Manufacturers that produce decking and professional sheet, usually complete their products with snow-holding elements, which, according to the principle of action, are divided into two types:
- Snow Barriers These devices are installed on the roof to stop the avalanche descent of snow masses. They hold the snow until the sun's rays melt it. The disadvantage of this design is that the snow cap greatly increases the load on the roof frame and the foundation of the house. To avoid deformation of the roof covering when using snow bars, it is necessary to clean the slope of snow manually in due time.
- Snow plows. Elements for snow retention, operating on the principle of snow barriers do not accumulate snow masses on the roof surface. They take them a la carte, dividing the formation of a large mass into small plates. Professional roofers recommend using devices of just such a design, since this does not overload the roof frame. However, they do not protect the walkway, the porch or the parking lot from the snow.
If the roof is covered with corrugated sheeting, devices must be installed on it to prevent the spontaneous descent of snow masses. Since their absence creates a danger to the health of the inhabitants of the house and causes damage to the roofing, reducing the service life of the material.
Kinds
Installing snow holders - the process of creating a physical barrier of durable material that can stop and keep the snow mass on the slope. The type and number of elements for snow retention depends on the amount of precipitation, the slope of the slopes and the type of roofing. The following models are used for roofs made of profiled sheets:
- Grid. They are a grid height of 15-20 cm, mounted on brackets along the slope of the roof. Do-it-yourself installation of this type of device is recommended only if the rafter frame has sufficient load-bearing capacity, since they hold drifts of large mass and large ice floes on the roof surface.
- Lamellar. Snegozaderzhateli this type look like perforated plates of metal, mounted on the roof corners. They are fixed along the eaves overhang at a distance of 40-60 cm from the edge, reliably holding the snow behind the fence. These devices are inexpensive and easy to assemble by hand, however, they are used only if the slope of the slopes does not exceed 30 degrees.
- Tubular. Snow protectors of this type have a different principle of operation, they are also called snow cutters, since they divide the snow mass into thin plates, passing between the pipes. Tubular elements to hold the snow are brackets into which metal tubes are passed through the holes in two rows. The installation of these devices is considered to be the most effective for corrugated roofs, since they do not delay the entire snow cap until it is completely melted, and in small portions they drop it from the slope.
Note! Usually builders recommend installing snow-holding elements with their own hands along the entire slope of the roofs, but this undertaking is associated with serious financial costs. To reduce costs, install snow catchers only on particularly important areas: driveways, parking lots, porch, green spaces. If the length of the slope exceeds 5 m, then recommend installing in two rows.
Installation
When mounting snow-holding devices on the roof from a professional sheet with your own hands, you should be attentive to this task. Fasteners violate the integrity of the roofing, so use roofing screws with press-hat and rubber seals. The mounting technology sees as follows:
- First determine the place of installation. The first row of snegozaderzhateley set along the eaves overhang, above the bearing wall of the house. At that level, along the slope, they pull the cord.
- With the help of roofing screws, the brackets are fixed, they are placed every 50-60 cm, since the load on each element is 200-230 kg.
- The next stage is the installation of snow stoppers pipes in the holes of the brackets. If the second row of snow holding is mounted, it is placed at a distance of 1.5-2.5 meters from the first.
Important! All snow retention devices are under enormous stress, so they must be made from high-quality metal. Each bracket is fixed with at least three roofing screws. If the installation is done carelessly, a large snow mass of snow hat will pull out the snow holders, deforming the roof covering.
Experienced roofers recommend installing tubular snow guards, which are suitable even for very steep roofs with an angle of more than 60 degrees. Good performance is demonstrated by hybrid devices representing a grid welded to the tubular elements of snow retention. To save you can do it yourself.