Wind Class Ratings Roof

Highest roofing fire rating.

Wind class ratings roof.

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. Class h is the highest rating. When tested to ul 2218 shingles can achieve an impact resistance rating from class 1 through 4 with a class 4 rating being the highest. Underwriters laboratory ul standard 2218 is a test method for evaluating impact resistance.

What class are gaf timberline hd shingles. The series highlights our popular duration shingles along with up to 7 other duration styles depending on where you live that feature unique performance characteristics. Difficult to determine warranty costs. However some of these brands have been excluded from the preceding list.

If we have only collected a handful of reviews we run the risk that a single homeowner might affect the average rating too far in one direction or another. As you can see these shingles have a class a fire rating and its wind resistance rating is 130 mph. If you re looking for a more affordable shingle and are ok with a relatively limited warranty tamko is a perfect choice. This type of roofing material is classified based on wind speed resistance and with wind ratings categorized as follows.

Additionally if you re planning on moving in a few years tamko shingles are a good choice because of the low cost. Class a fire rating. Duration series shingles are unrivaled by any other architectural shingles because they feature our patented surenail technology a technological breakthrough in shingle design. When installed with the required combination of gaf accessories timberline hdz shingles are eligible for an industry first.

And so we finally come to the question posed by the title of this article. And access over 9 000 products and services rated. Building codes are modeled. 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.

Impacts on asphalt shingles e g from hail can damage them. Become a member or sign in. 110 130 mph wind rating. Ul class a listed to ansi ul 790.

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. That puts it somewhere between class g and class h. The test increases psf in increments and records pressure at the moment the roof system experiences wind uplift failure. Wind impact unlock roofing ratings.

You can find the ratings for gaf timberline shingles on this website. Windproven limited wind warranty.