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,

Strano & Associates, REALTORS Southern Illinois Rental. Strano and Associates Real Estate has been assisting people in renting homes and rental properties in Southern Illinois since 1981. News Power Engineering 05/21/2015 MIC President beth Miceli Named to AATA Board of Directors; AATA to Provide Free NDT

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