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,

l Gallon Backpack. Chapin Professional 4gallon backpack poly sprayer hands free sprayer for large jobs; 4inch wide opening with poly shutoff and adjustable cone and fan nozzle Chapin s Wood Products Whitman, MA All Wood. Chapin s Wood Products has grown to be one of

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