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,

Contract cancellation Roofing Talk I have a couple customers who signed contracts with my company for roof replacement. I have spent at leastfull days worth of time meating with adjusters. Avocet Line Lympstone to Topsham Walk South West. A level stroll along the Exe Estuary Cycle

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