Are Shingles Combustible

Asphalt shingles or roll roofing are made of asphalt with natural fiber or glass fiber felt and are combustible. These are surfaced with mineral grit (like sand) to give them color and to make the surface less ignitable.

Are roofing shingles flammable?

There are three different classes of fire ratings given to asphalt shingles – A, B and C. … These shingles will be effective against moderate fire exposures, are not readily flammable and will not cause fires to spread. Class B Fire Rating – Shingles that offer moderate fire resistance are classified as Class B.

Can I burn old shingles?

“Burning asphalt shingles emits heavy, noxious smoke that sometimes contains asbestos fibers that can be released during burning.” “Old asphalt shingles need to be properly and safely disposed of and burning them is not safe for our environment or for human health,” said Paulson. …