How to do roofing the roof with your own hands - video
The construction of the roof of a residential house is quite complicated, since it must perform three main functions: mechanical protection, thermal insulation and waterproofing of the structure. At the same time, it is important that air circulation in the under-roof space is maintained, otherwise the roof truss frame made of wood will rot and eventually become unusable.
However, one should not forget about aesthetic, neat appearance, which should complement the architectural design of the house. The underside of the roof is a small structural element, the functionality of the whole structure depends on the correct installation. In this article we will describe how and what can hem the eaves, so that it protects the rafters from moisture, wind and provides normal ventilation.
Functions
Under the roof is called the filing of eaves and gable overhangs, which covers their lower surface, unprotected by waterproofing material from ingress of atmospheric moisture, cold air. Filing cornices produced during the production of roofing work and is their mandatory operation. In the roof structure, the underburden carries the following functional load:
- Prevents atmospheric moisture from entering the truss frame. The bottom surface of the ends of the truss legs, which form the eaves overhangs, is not protected by waterproofing material and roofing. Therefore, they can get and have a negative impact on atmospheric moisture or water during intensive snow melting.
- Protects the top of the walls from dirt and water. Water mixed with mud drains from the surface of the slope, and as a result, splashes can fall on the walls, smearing their finish and spoiling the exterior of the building.
- Does not allow birds to nest under the overhang of the roof. The eaves is a favorite place for nesting birds, which pull out thermal insulation from the roofing pie, and also often disturb the inhabitants of the house with a loud noise.
- Closes the unsightly "wrong side" truss frame.
Note! Neatly sewn cornices, the color of which coincides with the shade of the roofing material or is in harmony with the elements of the drain, harmoniously complements the appearance of the whole building, making it complete and solid.
Materials
Earlier, when the assortment of building stores did not differ in such a variety, trimming materials, which were left from roofing, were used for filing curtain and gable overhangs. Underbelly for the roof of the trimmed boards did not look too aesthetic, besides it did not serve for a long time. Now masters for filing are most often used:
- Clapboard. The traditional option for covering eaves overhangs is clapboard made of different wood species. Pine sawn timber is easily mounted, creating an air-permeable barrier that does not allow atmospheric moisture inside the truss frame. The disadvantage of this method of tamping is that the wood is prone to rotting due to moisture.
- Decking. Hem roof cornice can be using residues profiled. This material is well protected from moisture, it is resistant to corrosion. However, working with this material is quite difficult and inconvenient. In addition, the curved edges that remain after the cut look unaesthetic.
- Siding. Underlay for the roof can be using siding. This term refers to a panel of metal or plastic. Covering with siding looks neat, aesthetic, installation is simple. The disadvantage of this method is that this material does not let air through, which is why air circulation and wood rotting do not occur in the under-roof space.
- Soffits. Soffits are special perforated panels used as a tamping of eaves and gable overhangs. They are also like siding made of metal or plastic. Through perforations, spotlights provide good ventilation for the roof of the roof.
Important! Several types of spotlights are produced, which differ in the degree of perforation. Fully perforated models are used for filing the lower surface of the overhangs, the holes on them are located along the entire surface. You can also use spotlights with a central perforation, in which only the central section with holes.
Binding methods
The overhang of the overhangs can be done in different ways depending on the type of roof chosen for sewing the finishing material and the taste preferences of homeowners. The technology of filing is chosen in accordance with the angle of inclination of the slopes. There are the following types of tampering:
- Diagonal podboy. The diagonal method of filing the eaves is in the bottom of the lower surface of the rafter legs with soffits, panels or clapboard without frame. This technology implies fixation of the hem material directly to the rafters, therefore the lining is located in the same plane with the overhang. Diagonal filing is usually performed on the gable overhangs and eaves of low-slope roofs with a short slope length. This technology is considered more laborious due to the fact that working under the overhang is inconvenient and long. However, the diagonal method is more economical in terms of the consumption of finishing material.
- Parallel. With parallel technology, the bottom podcasting roof is located, as it were, parallel to the ground. To fix it, collect a special box of bars. The framework of the filing is made of boards, one of them is fixed on the outer wall with anchor bolts, and the second along the edge of the overhang at the ends of the rafter legs. These two support beams are interconnected by cross-beams, and then sheathed with soffits, clapboard or siding. The diagonal method of filing is more expensive than the diagonal. It is mainly used to design the eaves of the roof, especially if it is steeply curved.
Keep in mind that the choice of the method of filing the eaves depends not only on the roof construction, but also on the choice of hemming material. The most convenient way to perform podboy using special panels - spotlights. Spotlights visually resemble siding, but have a large panel width and perforations.
