Do Asphalt Siding Shingles Contain Asbestos

However during extensive sampling of material from re roof projects with tear offs the occurrence rate of find asbestos is less than 1. Their width can range from 12 to 48 inches and are very simple to identify since asbestos fibers can be seen on the grained sections of the material. These shingles are generally 12 by 24 inches and the bottom tends to have a wave like pattern though that is not always the case.

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These materials are known as fiber cement siding and they contain no asbestos.

Do asphalt siding shingles contain asbestos. Roof shingles even if the material contained asbestos which it might are rarely the only nor even the principal source of problem levels of asbestos fibers in a building and i suspect the same is true of asphalt based building siding. Corrugated cement panels were used for a short period of time as they break quite easily. Most homes have asphalt shingles and asbestos is more common in asphalt shingles. Asphalt containing base flashings in reality while asbestos was commonly used in many asphalt roofing materials asbestos was rarely used in the shingles themselves.

Some asphalt roof shingle products and therefore quite possibly some asphalt siding products did indeed contain asbestos fibers in their substrate or coating. Asphalt shingles yes roofing manufactures have admitted to using trace amounts of asbestos in the fiber mat from around 1964 1976. It was a popular additive to various housing materials from the 1920 s to the 1960 s. Asbestos was used in asphalt based roofing products such as asphalt roofing or siding shingles in north america as early as 1891 and continued into the early 1980 s.

Roofing adhesives roofing felt and base flashing also might include asbestos. Testing your siding for asbestos. Asbestos is a popular material that has been used to reinforce concrete shingles. It comes in the form of fiber and has a high fire retardant property which serves as a good reinforcement for concrete.

The national emissions standards for hazardous air pollutants neshap identifies several asphalt containing roofing products that may also contain asbestos including. Look to see what kind of shingles you have. In order to remove the shingles yourself you would need approval from the epa. If you have shingles that contain asbestos and if these shingles are beginning to deteriorate or fall apart you should have them removed.

Cementitious siding installed after 1973 is very unlikely to contain asbestos. It is acknowledged by the asphalt shingle manufacturers that between 1963 and the mid 1970s some manufacturers did use asbestos in the fiber mat of shingles. If your siding fits either of these descriptions you should consider having it tested. Homes built between 1920 and the 1960s are likely to contain asbestos in any cementitious siding tiles.

Asphalt shingles usually contain small amounts of asbestos. The siding may also contain asbestos if it is old with a wood grain texture to resemble cedar. This type of roofing material can have various colors from different shades of grey to red green and even blue. Rather than attempt to do the removal yourself be safe and hire experienced professionals to do the job.