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,

Heat Trace for Pipes Able Group Heat Trace Systems by Able Group Inc. The photos shown on this page are from a parking garage job we performed where multiple dwellings were built above it. The Roane Alliance Roane County, TN Industrial Guide Roane County, TN Industrial

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