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,

Residential Roofing New Home Roofs and Roof Repair Horizon Roofing Company specializes in residential roofing of all types and styles, plus we do gutters, skylights and more. Windows Installation, Siding, Roofing Affordable Replacement Windows, Siding, and Roofing for Seattle, Tacoma, Olympia and Surrounding Area Residents

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