Decker
The moment, quite considerable for works of a roof and east facade tightness and paroizolyatsiya outeplitelya. It can be from various dandruff of a roof and membrane which protect not only the document-outeplitel 'he, and also of course internal structure of construction of climatic external factors which can negatively exert impact on it, just as condensation — it is formed inside on elements of a roof or on a covering.
If humidity, outeplitelya, reaches 5%, the income of the document-outeplitelya assimilates to zero. We can avoid it if to use qualitative paro - and tightness in construction. Also, you save means, raskhodovanny on energy for heating as also, you will be able to be ouverenny in longevity of structure of the building.