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,

Easy Heat/EGS Electrical Group Emerson Industrial Self Regulating Copper Braid, Snow Melting Mats, Floor Warming Cables, Mats, Thermostats, Thermal Storage Systems, Controls and AccessoriesVOLTS CATALOG NUMBER LENGTH WATTS. Emerson Industrialvolts catalog number length watts adks100 20´ m 1dks150 30´ madks300 60´m 3dks400 80´mStraight Line Construction Roofing

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