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,

Portland Roofing Contractors Commercial Roofers Portland. Welcome to Cascade Roofing Portland. Quality and trust come with experience and we have been serving the Portland Metro area since 1959. Our family owned roofing. Beaverton Roofing CompanyRoofing Contractor in Beaverton Beaverton Roofing Company. Beaverton Roofing has been building

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