Is Asphalt Roofing Fire Resistant?
Is asphalt roofing fire resistant? Yes, many of the available asphalt shingles have a class A fire rating.
What is a Class A Fire Rating?
Using the American Society for Testing and Materials (ASTM) tunnel test, the flame spread classifications are developed. Class A rating designates superior fire protection. Class A fire ratings indicate flame-spread of 0-25 and smoke developed between 0-450 and are the highest ratings.
However, do not expose asphalt shingles to a greater temperature than average roof temperature highs, which, in Texas, can be 190. The shingles, however, will only get too soft and be exposed to an accelerated pace of degradation; they will not catch fire at these temperatures.
What are the Best Fire Resistant Roofing Materials?
While many asphalt shingles are Class A fire resistant, other materials like slate, metal, and tile roofing are better choices.
All three of these roof materials are good choices for a fire-resistant roof if you want more protection than asphalt shingles provide.
Using other materials like DensDeck, a gypsum board, increases fire resistance.Back to Blog