Roof Warranty Wind Speed

Standard 4 nail application is 110 mph wind warranty.

Roof warranty wind speed.

Most single ply roofing manufacturers do offer higher wind speed warranties. The standard wind rating covers a roof assembly up to 55 mph winds. Design require a 99 m p h. For added protection owners can upgrade the coverage to 72 mph.

In figure 9 a 300 ft high roof area with a rooftop wind speed of 80 mph the ground wind speed would be 55 mph while a ground wind speed of 80 mph would actually cover winds up to 118 mph for the same building. However the granting of such a warranty is dependent upon the overall system design and other components utilized in the design. Support services can include. Enhanced wind warranty to 130 mph with 6 nail application and the use of atlas pro cut starter shingles installed along the eaves.

For installations not eligible for the windproven limited wind warranty maximum wind speed coverage is 130mph with special installation or 110mph without special installation. Membrane manufacturers warranties provide recourse for owners against failures in the roofing materials workmanship or assembly such as material or design defects. Minimum wind speed rider with all manufacturers warranties in low wind areas and 110 m p h. Conceptual product information building science wind uplift data national and local code understanding fm global and ul regulations fastening patterns and sheet layouts installation guidelines and standard details.

Refer to the atlas roofing limited shingle warranty for all coverage requirements. Most roofing suppliers now offer a numerical wind coverage such as 50 55 or 60 mph and will consider higher wind speed coverage with advance notice. Please note that a 1 90 or a 1a 90 rating does not provide the necessary wind speed requirements. Figure 9 examples of warranty language.

Non single family detached residences designer shingles including timberline ultra. Every warranty carries with it a wind speed rating a threshold above which the membrane manufacturer will not cover wind related roof failure. For example carlisle syntec s gold seal warranty base coverage for wind is under 3 seconds of 55mph gusts. Refer to local wind speed maps for other wind speed design requirements.

Wind speeds were and in some cases still are noted by description such as windstorms gale force and such. Minimum wind speed in known high wind areas. Check with your roofing contractor to find out what winds speeds you are covered for. Roof warranties including wind speed coverage started as a marketing approach to differentiate single plies from asphalt roofing.

If your building is located in high wind or hurricane areas you may want to look into a wind gust upgrade.