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,

22151 Zip Code North Springfield, Virginia Profile. Click to draw/clear zip code borders. Notable locations in this zip code not listed on our city pages Notable locations in zip code 22151 Springfield Station A. Timber Frames Post and Beam Contractor Wood Beams Handson craftsmanship. Vermont Timber

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