Wind Rating Roofing Class

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.

Wind rating roofing class.

And so we finally come to the question posed by the title of this article. If you re looking for a more affordable shingle and are ok with a relatively limited warranty tamko is a perfect choice. You can find the ratings for gaf timberline shingles on this website. That puts it somewhere between class g and class h.

What class are gaf timberline hd shingles. Wind ratings tell us the force of wind gust your shingle is designed to stand up against. 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. This type of roofing material is classified based on wind speed resistance and with wind ratings categorized as follows.

On d 3161 or ul 997 test data wind resistance of shingles should be determined in accordance with ul 2390. 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 d3161 standard test method for wind resistance of asphalt shingles fan induced method class f is the highest rating. 110 130 mph wind rating.

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. The test increases psf in increments and records pressure at the moment the roof system experiences wind uplift failure. As you can see these shingles have a class a fire rating and its wind resistance rating is 130 mph. Thicker than heritage shingles.

Roofing shingle wind ratings are important factors that help determine the type of shingle you should choose for your home or business. Select shingles that have a class rating equal to or greater than the basic wind speed specified in the building. Two test standards are commonly used. 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.

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. These ratings are presented below. Difficult to determine warranty costs. Building codes are modeled.

Astm d7158 standard test method for wind resistance of asphalt shingles uplift force uplift resistance. Asphalt shingles are tested to determine their wind resistance. The shingles with the highest level of satisfaction appear first lower levels come later in the list.