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,

2009 Dodge sun roof that has started ers. I have aDodge Journey with a sun roof that has started leaking at all four corners of the rubber gasket. The water is running into the floor storage bin behind. BSC Contracting LLC, Roof replacement for MidMissouri. BSC

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