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,

Nevada Contractors Board Directory Active Directory of Licensed Contractors Nevada Contractors Board Directory Information current as of 05/28/2015 616 am 0040719 11/30/2015 Active Peelandstick flashing tapes & membranes used on building. Selection and installation of peelandstick flashing membranes used on building exteriors. Peel and stick flashing

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