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,

Roofing Calculator Estimate Roof Prices in MA Cool Flat. Roofing Calculator is designed to provide approximate replacement prices for PVC Flat Roofing and Metal Roofing Systems, that we charge in MA, CT, RI and NY. Metal Roofing and Metal Walls Systems ATAS International. Welcome to ATAS

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