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,

Celotex TC3000 Insulation Board for Builtup Flat Roofing Celotex TC3000 is specifically designed for use within builtup flat roofing applications, including hot applied bituminous and torchon systems Flat Green Roofs and Roof Gardens Safeguard Europe Ltd Flat Green Roofs. Knowledge of green roof construction methods 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.