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,

BIDOnline by Integrated Imaging, LLC. scope specifications include castinplace concrete, unit masonry assemblies, pipe and tube railings, penetration fire stopping, fireresistive joint systems, joint. Author ant96533 Last modified by giw91085 Created Date 7/10/2014 14817 PM Other titles All Contractors Contractors by Trade Company Virginia IT Infrastructure.

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