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,

s Corning Roofing And Asphalt Honor Industry Best With. TOLEDO, Ohio, May 3,/PRNewswire/ s Corning Roofing And Asphalt Honor Industry Best Preferred Awards. NM Roofing Contractors Association Home Page new mexico roofing contractors association site for members and consumer information Commercial & Residential Roofing Denver Frontier

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