Wind Rating Roofing Class

Astm d7158 standard test method for wind resistance of asphalt shingles uplift force uplift resistance.

Wind rating roofing class.

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. 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 ratings tell us the force of wind gust your shingle is designed to stand up against. That puts it somewhere between class g and class h.

Astm d3161 standard test method for wind resistance of asphalt shingles fan induced method class f is the highest rating. These ratings are presented below. Two test standards are commonly used. Roofing shingle wind ratings are important factors that help determine the type of shingle you should choose for your home or business.

In addition to a description of what they like and dislike about their shingles homeowners also rate their satisfaction from 5 very satisfied to 1 very unsatisfied. 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. 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.

Thicker than heritage shingles. Difficult to determine warranty costs. As you can see these shingles have a class a fire rating and its wind resistance rating is 130 mph. And so we finally come to the question posed by the title of this article.

On d 3161 or ul 997 test data wind resistance of shingles should be determined in accordance with ul 2390. 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. Asphalt shingles are tested to determine their wind resistance.

What class are gaf timberline hd shingles. Class a fire rating. The test increases psf in increments and records pressure at the moment the roof system experiences wind uplift failure. The shingles with the highest level of satisfaction appear first lower levels come later in the list.

This type of roofing material is classified based on wind speed resistance and with wind ratings categorized as follows. 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. An often overlooked aspect of a roofing shingle is its wind rating.