Nachi Roof Sagging

Common flaws include undersized rafters insufficient sheathing or too few rafter or collar ties.

Nachi roof sagging.

Page 18 of 240. Keep your attic well insulated and ventilated to prevent ice dams which can cause roof leaks. Rafters are typically installed on 24 inch centers. General roof inspection online video course.

Hydraulics click here to learn more about nachi products. The concerns regarding moisture standing water durability and appearance are different. Click here to learn more about nachi products. It s an indication that you should look carefully for other problems in the roof framing.

If you see sagging rafters recommend stabilization by a qualified contractor. The roof data technician program developed by internachi and owens corning provides an additional revenue stream for internachi members who are hired by owens corning as part of a roof warranty claim resolution process. Weight related sagging can also be caused by design flaws that leave the roof unable to support its own weight. If you see rafters installed on centers greater than 24 inches look for signs of failure such as sagging of the rafters.

Rafters are typically installed on 24 inch centers. In general for areas in which you can t see the framing directly you ll be looking for signs of failure such as sagging unevenness or cracking of the interior or exterior wall coverings. Specialty steel click here to learn more about nachi products. If you see sagging rafters recommend stabilization by a qualified contractor.

Yet historic and modern adobe structures share common deterioration problems so it pays to understand the basic vulnerabilities inherent in the material. Sagging rafters or inadequate rater ties can cause the ridge to sag and the exterior walls to bow out. Inspectors may notice that adobe walls are pitted bulging or cracked or the roof may be sagging but the cause of these problems may not be obvious. If you see rafters installed on centers greater than 24 inches look for signs of failure such as sagging of the rafters.

If the framing is sound and problems are not found elsewhere but the roof still sags the problem might have originated because of poor installation of the plywood sheathing or shingles. The roof insulation and ventilation must all work together to keep the building free of moisture. Bearings click here to learn more about nachi products. In fact if designed correctly roof overhangs can protect the building s exterior walls from moisture and sun.