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,

T Perry and Sons Roofing Roofing Rancho Cucamonga, CA.92 ·Lomita Dr Rancho Cucamonga, Roof Tile Restoration Tile Magic Orange/Riverside Co. Roof Restoration Orange County, CA. With thousands of residential and commercial roof restorations completed, including the 800,000 square foot Dana Point Marriott. Roof Leak Repair Products

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