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,

Truman Reconstruction White House Museum Major Renovations . During the Depression and war years of the Franklin Roosevelt administration, the White House s annual repair budget had been neglected. Cool Roofs Department of Energy A cool roof in a hot climate can save you money and

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