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,

Long Island Spray Foam Insulation Rocket Insulation New. "Rocket Insulation and Coatings, Long Island is a fullservice Insulation Contractor that can accommodate all of your Residential, Commercial and Industrial. Siding and Roofing Long Island Contractors Roofing, siding, kitchen and bathroom remodeling, window and door installations.

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