Wind Rating Roofing Class

If you re looking for a roof to stand up against high winds a rating system used by ul is going to be your benchmark.

Wind rating roofing class.

Roofing shingle wind ratings are important factors that help determine the type of shingle you should choose for your home or business. Thicker than heritage shingles. These ratings are presented below. Wind ratings tell us the force of wind gust your shingle is designed to stand up against.

Building codes are modeled. Two test standards are commonly used. This type of roofing material is classified based on wind speed resistance and with wind ratings categorized as follows. The shingles with the highest level of satisfaction appear first lower levels come later in the list.

On d 3161 or ul 997 test data wind resistance of shingles should be determined in accordance with ul 2390. Asphalt shingles are tested to determine their wind resistance. As you can see these shingles have a class a fire rating and its wind resistance rating is 130 mph. The test increases psf in increments and records pressure at the moment the roof system experiences wind uplift failure.

You can find the ratings for gaf timberline shingles on this website. Select shingles that have a class rating equal to or greater than the basic wind speed specified in the building. What class are gaf timberline hd shingles. Class a fire rating.

Whether you re in florida facing tropical storms or along the rockies and great plains understanding the ul 580 wind uplift rating is key. And so we finally come to the question posed by the title of this article. Ul 1897 testing is the roofing wind resistance standard that ensures compliance with the international residential code irc or the international building code ibc on which most u s. Astm d7158 standard test method for wind resistance of asphalt shingles uplift force uplift resistance.

Shingles that have been evaluated in ac cordance with ul 2390 have a class d 90 mph g 120 mph or h 150 mph rating. 110 130 mph wind rating. If you re looking for a more affordable shingle and are ok with a relatively limited warranty tamko is a perfect choice. Astm d3161 standard test method for wind resistance of asphalt shingles fan induced method class f is the highest rating.

An often overlooked aspect of a roofing shingle is its wind rating. Class a for winds up to 60 mph class d 90 mph class f 110 mph class g 120 mph and class h 150 mph homeowners should be aware that wind velocity varies across a roof and causes different uplift pressures depending on. Furthermore the roofing designer or specifier sometimes assumes if there is a design wind speed requirement of 90 mph then the roof system must have a 1 90 rating which is not always true at least not for the reason they think maybe for tall buildings or if other factors exist.