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,

Metal Roofing Sheets Corrugated Roof Sheeting Cladco LJT Cladco specialise in quality Metal Roofing Sheets, Corrugated Sheeting and Steel Roof Sheet supplies. We also stock Accessories, Fixings and Z Purlins. Roof shingle Wikipedia, the free encyclopedia Roof shingles are a roof covering consisting of individual overlapping

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