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,

Lakeshore Landscaping Commercial Landscape Architects. Since 1985, Lakeshore Landscaping has been designing, building and maintaining landscapes and customer relationships in and around Northwest Indiana. Commercial Building Products Magazine Properly specified and installed continuousinsulation CI and airbarrier materials are at the core of a cavitywall system that

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