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,

Press Releases AZEK Find out the latest corporate news and read press releases from AZEK. The Project Gutenberg eBook of Scientific American, March. "I did not notice any perceptible difference in the perfection of elasticity in the two sets of needles. The result, as far as

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