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,

Technical Tuesdays National Fire Sprinkler Association National Fire Sprinkler Association40 Jon Barrett Road Patterson, New 80 85 Contact Us Mercenary Wikipedia, the free encyclopedia A mercenary is a person who takes part in an armed conflict who is not a national or a party to the

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