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 Walking on Corrugated Metal Roofs, corrugated. corrugated metal roof, gauge materials, gauge number You should select minimumgauge steel or 0.032inch aluminum material for the roof panels. These can be. Roofing pitch for metal roof, standing seam roofs. standing seam roofs, minimum pitch, roofing sheets Great

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