The visible ease of use of the “grinder” when cutting steel sheets of metal tiles can have sad consequences, because during cutting the abrasive disk of grinding machine heats up and burns a polymer coating and zinc around the section. Corrosion begins in these places. In addition, sparks from cutting fly throughout the roof, can burn the roof or be the cause of rusty subtexts. For trimming metal sheets, experts advise electrician, electric wizards or hand scissors for metal, as well as special nozzles for a drill.
Lack of seals under the skate
The winter season with frosts and thaws, strong snow snowstorms always makes you think about the need to compact a subcutaneous space. For waterproofing of insulated roof, a microphorized film is used (with a double ventilationzor). Without a seal under the skate, the mass of ice and snow presses on the roof and the insulation of the insulation with a film occurs. This leads to the fact that the film loses its qualities and the insulation becomes wet. As a result, this leads to leakage and freezing, and then to decay and dampness of the wooden roof structure.
The use of bad self -tapping screws
As a result of the use of such screws, the fasteners of fasteners will occur, which is why moisture will fall under the roof. Then corrosion of metal sheets in the places of fastening may begin. For fasteners of metal tiles, professionals advise self -tapping screws 4.8×28 (4.8×35) from stainless steel or high -quality carbon steel coated from corrosion. Such self-tapping screws have washers with EPDM-laying (strong elastic rubber, resistant to chemical and temperature effects) and heads covered with paint. To check the quality of the screw, you need to compress the self -tapping screw with pliers. On a high -quality screw, a rubber gasket and paint will remain intact.
Professionals recall that the roof is a complex and significant part of the house on which it is better not to save. So that the roof does not require major repairs in the next 20-40 years, you should pay attention to the roofing components from high-quality manufacturers. It is better to purchase branded materials that will give a guarantee of durability of the entire roof structure.
In fact, there are much more installation errors, starting from the roof project to the installation of the drainage system. Therefore, if there is financial resources, then it is best to turn to the services of professionals in this field.
