The main factor that may weaken the stability of the roof structure is dampness. On its negative impact it is particularly exposed rafter framing, which deform under impact of water. Therefore is important roof protection against getting in  water into its internal structure.

Typically, investors during the construction of the roof attach great importance both for building materials, as well as careful execution. Unfortunately, later very often they forget about the survey, and any minor defects  commission outsource cheaper and often non-professional roofing companies. This is a big mistake,

San MateoFoster City School District Miscellaneous Other s Drive, Foster City, 650.312.7700 Phone 650.312.7779 Nibbi Brothers General Contractors Nibbi Brothers General nan Street, Ste 102, San ,LICENSE #757362 Innovative Mechanical Heating & Air Conditioning/HVAC ews of Innovative Mechanical "Innovative Mechanical replaced my home

A very important element that must be considered when the roof is projected, is ventilation, allowing drainage of excess dampness from under the roofing.