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,

Associated Builders and Contractors FindAContractor Associated Builders and Contractors ABC is a national trade association that advances and defends the principles of the merit shop in the construction industry. Reliable Remodeler Find Remodeling Contractors Kitchen. Find local remodeling contractors fast and easy. Get the latest DIY

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