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,

Find Roof Repair Contractors Fix Your Leaking Roof Loose shingles, missing shingles, and stains appearing on the ceiling inside your house due to a leaky roof are all indicators that your roof is in need of repair. Ideas to repair a Leaky shipping container roof ADVrider

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