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,

Bay Area Window Pros® Largest Window Replacement. Bay Area Window Pros® offers Wood windows Replacement, Vinyl Home Window, Milgard Windows. Fire Equipment Allied Rubber & Gasket Company GLOBE Commercial Quick Response GLOBE Commercial Standard Response GLOBE Concealed Heads GLOBE Residential Heads GLOBE Dry Upright Standard Response

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