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,

Calvert County, MD Official Website FYBid Results Bid Number. Bid Title. Purchasing Agent. Bid Results. Awarded To. RFQ 20 Custodial Services SWWTP Heather Roe 2014001 , Inc. Waldorf, See Africa South Coast 46 Sleeper Afsaal Consultant "See Africa!" Location South Coast Tariff ZARFeatured Yes TO View

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