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,

Boon an Episode Guide an Episode Guide by Underwood and Lavalie Last updated Sat,May0600 aired from Janto May 1995eps ITVmin stereo closed. Too Dangerous for a Lady by Jo Beverley. Currently Viewing... Too Dangerous for a Lady Mass et Paperback Pub. Date 4/7/2015 Publisher

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