Gar Roofing Class A Fire Ratings

In a recent roofing column we focused upon technical information that could be found on roofing material wrappers that could verify compliance with various building codes.

Gar roofing class a fire ratings.

Class a roofing is the preferred choice for any home but this type of roofing is particularly important if you live in an area that is prone to wildfires to achieve a class a rating the roof must be effective against severe fire exposure. Class a does not mean grade a roofing systems are rated by realistic fire tests. This month let s take a closer look at one particular type fire ratings. According to the scope of fm 4470.

Versashield fire resistant roof deck protection is a key part of the gaf lifetime roofing system 1 and has earned the good housekeeping seal. Understanding roof fire ratings class a roofing. An exterior fire retardant treated shake roof has a stand alone class b rating. Ul class a listed to ansi ul 790.

Truck tool rental. The slope of the test specimen is preselected and since steeper slopes are more of a challenge due to melting material feeding the fire the rating applies to the maximum slope passed. Example test process for class c fire protection rating. But by including a particular underlying material it can meet the requirements for a class a roof.

When installed with the required combination of gaf accessories timberline hdz shingles are eligible for an industry first. The maximum flame spread is 6 feet for a class a rated roof 8 feet for class b and 13 feet for class c. Tested roof systems are fire classified class a b or c where the most fire resistant roof assemblies are class a and class c is least resistant. Get free shipping on qualified class a roof shingles or buy online pick up in store today in the building materials department.

Fire rating ul 790 class a 56 no rating available 1 price. Building code fire resistance requirements building codes establish fire resistance requirements for roofs based on the type of construction e g concrete steel wood for the building. 1 1 2 c 1 1 2 x 25 32 block of wood with one saw kerf on the wood block. Similar to class a and b above but a still smaller fire test configuration is used.

20 30 3 30. Versashield fire resistant roof deck protection provides the very best fire protection. Windproven limited wind warranty. Common underlying materials include a type 72 roll roofing material also known as 72 pound felt or 72 pound capsheet material and a panelized gypsum product.

Set custom price range. The best rating achieved is class a which is described by ul as effective against severe fire exposure class 1 rating. The class 1 rating is an exclusive designation that can only be awarded by fm global which indicates the successful testing of the entire roof assembly using fm approval standard 4470. A wind warranty with no maximum wind speed limitation.