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,

Northwest Indiana & Chicagoland Roofers Professional. Korellis Roofing understands that the success of a project begins with selecting the best professional roofing contractor. At Korellis, our responsibility is to. GAF Roofing Shingles & Materials Roofing shingles and materials, plus factorycertified roofers including ratings from real homeowners!

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