The problem is quite common as the owners of private houses and residents of the upper floors of apartment.
Deal with it is not easy. If the root cause found and corrected wrong, then leak back after the first rains.
The main reasons may be:
- Wear materials exceeded their useful life.
Any, even the expensive coating has a specific warranty period. For example, about 15 years serve bitumen, 20 - slate, etc. Over time, the temperature changes, wind, and other external factors, the roof comes into disrepair.
- Violation of technology in the construction.
If somewhere there was a mistake, or the work was done poorly, not performed by specialists, to excessive sealant saving and insulation, all this will affect the quality of the result. Sometimes it will be formed condensate.
- Lack of tightness.
In areas, where the antennas and the pipe. Poor contact with the walls sloping at design. The problem will appear there. They formed cavity accumulating condensation, which then runs down.
- Low quality materials.
Regardless of whether new construction or old.
- Damage inflicted by plant roots.
- Mechanical damage.
For example, if snow removal means at hand.
- The apartment buildings are to be finished late repair work, when employees of the management company removed the cover, but not patched in time.
For an accurate understanding should conduct a thorough inspection of the roof from both inside and outside. This deals with the management company or the owner, if the house is private.
Internal inspection should only be carried out in the daytime, and present themselves with a flashlight. Visually divide the area into several sections and check one by one. Particular attention should be paid to the different floors, corners and junctions. On the problem areas indicate light passing through the hole accumulation of mold and moss. Discovered point to note is recommended once a waterproof marker or paint.
External examination only held in warm and dry weather in compliance with all security measures. Near the leaks are often formed spots of light color, also need to look closely at the point found inside. After comparing the results of the cause of occurrence of the roof often becomes clear.
