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,

THE BLOODIED MOHAWK ADDITIONAL PARTISANS AG GARRET ABEL, RWPA #S28210. He was born on March 15, 1757. He was noted to be a merchant in the Coxsackie District of Albany County, New York in He served as a private. "MOHAWK VALLEY MAPS AND SKETCHES" FORT PLANK

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