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,

Yonkers Asphalt Driveway Contractors Recommendations. Over 3,177 reviews for Yonkers Asphalt Driveway Contractors from people just like you. Online Classified Ads Westchester. Classified ads online from the Yorktown in Westchester County, NY. The covers Westchester, Putnam and Dutchess County in New York, and Fairfield. Find Reviews

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