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,

Conservatory of Flowers Wikipedia, the free encyclopedia Through its life, the Conservatory of Flowers has undergone several repair campaigns. The Palm Room, located in the center of the building, was seriously damaged in a. Bay Area General Contractor GOLDEN GATE ENTERPRISES BAY. Bay Area General Contractor

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