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,

Stantec redesigns Canada House in Trafalgar Square. Trafalgar Square in London, with Canada House on the left. Photo c Ben Blossom Indianapolis Roofing Contractors Angie s List Find Roofing Contractors in Indianapolis. Read Ratings and Reviews on Indianapolis Roofing Contractors on Angie’s List so you can

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