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,

Irwin Contracting Inc. Irwin Contracting Inc – Award Winning Long Island Contractor Residential construction and Commercial construction. Irwin Contracting, a Long Island builder and. Latrobe Home Remodeling Home Builders Roofing. JM Building & Remodeling Company, providing remodeling and home building services for Latrobe, PA and the

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