How To Tell Asbestos Siding

Because fiber cement siding manufactured in north america after around 1978 was made without using asbestos in those later products and because those non asbestos fiber cement shingles included products that by eye were an exact visual match for their older asbestos containing brothers and sisters already installed a building built.

How to tell asbestos siding.

Roofing and siding shingles are among the most common materials to contain asbestos and will readily release fibers into the air if broken. Testing your siding for asbestos. Asbestos was also put into cement used on the exterior of buildings to help insulate the. Most older cement board products contain asbestos.

While older homes will likely contain asbestos in roofing insulation and tiles it can also be present in exterior siding. Put on a mask and scrape away some siding material into a baggie. The siding may also contain asbestos if it is old with a wood grain texture to resemble cedar. Identifying asbestos siding the only way to be sure if your siding has asbestos in it is to collect a sample and send it to an accredited testing lab.

Asbestos was used to make several exterior materials. If your siding fits either of these descriptions you should consider having it tested. Asbestos ranks high on the list of dangerous substances because of its toxic and carcinogenic properties when airborne. 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.

You may choose to take a sample of siding from a damaged area of siding. If your siding has these characteristics then asbestos could be present.