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,

Dumb question.. roof leak roofing, drain, ceiling. We have a roof leak. The inspector missed this when we bought the house, apparently. We discovered it a couple months after moving in we moved in Ray May Plumbing Montclair CA Plumbing Contractors. Plumbing Contractor for the Inland

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