Most of us have had to deal with such a problem as a leaky roof more than once. And even replacing the old roof with a new one, you can not be sure of its strength. When repairing the roof or during its design, it is necessary to take into account all factors affecting the quality of the roof.The slope of the roof depends on the angle of inclination of the roof to the horizon, the reliability of the roof, because it provides an unobstructed flow of water. It is believed that a slope of 2-10% quickly frees the surface from water, thereby protecting it from leakage and accumulation of water. It is water that is considered the main cause of the destruction of the roofing material, which makes the roof defenseless against the action of ultraviolet radiation from the sun. Stagnant water can penetrate into the roof and thereby exacerbate existing problems.Such important drains If the drains are installed improperly, it can lead to stagnation of water in the lower points of the roof. Funnels should be installed where they will most effectively perform their functions, and not where their installation will be cheaper.It is very important when designing drains to provide an additional drain - a "stormwater drain". This is necessary for those cases when the drain is unable to cope with large flows of water or in cases of its blockage.Why insulate the roof? Who knows that a well-insulated roof copes with temperature changes perfectly. All requirements for roof insulation can be found in SNiP II-3-79 "Construction heat engineering", and since there are no requirements for heat resistance of flat roofs, it is necessary to use data for attic coverings.However, even the most excellent thermal insulation will not be enough if you do not install an effective vapor barrier that protects the roof from the inside. Poor thermal insulation can lead to the formation of ice in cold seasons, which will lead to the appearance of bubbles and peeling of the roofing carpet from the base.We choose the material for the base of roofing systems, often laid on such types of bases:- old roof;- metal profiled sheet- concrete slab.Before choosing a base, you need to consult with a specialist, since they have different mechanical properties. Concrete slab is considered an ideal base for roofing material, as it perfectly resists moisture and fire. The main disadvantage of a concrete floor is its considerable weight and high price. Unlike concrete slabs, metal profiled sheets are lightweight and inexpensive. And as for the old roof, it is better to replace it with a new one, because the water remaining in the roofing carpet will continue to destroy the concrete base.Deformation seams and junctionsformational seams are able to reduce the load on the roofing carpet in places of large deformations. The deformation seam, first of all, protects the roofing carpet from tearing, therefore it must be made of bitumen-polymer and elastic polymer materials.As for the junction nodes, they allow you to make transitions from horizontal to vertical surfaces. Unfortunately, it is the junction nodes that give most of the leaks. If such defects are not noticed and not eliminated in time, it can lead to the destruction of the entire roof. Where to buy cenforce online?