Asbestos Siding Is It Cement Board

Asbestos siding is composed of asbestos fibers mixed with portland cement.

Asbestos siding is it cement board.

Asbestos cement roofing siding history dates codes patents give a history of cement asbestos siding roofing product use. Asbestos siding was manufactured by adding asbestos fibers which are a naturally occurring mineral to portland cement. If your siding fits either of these descriptions you should consider having it tested. Asbestos cement siding is very brittle and can be easily chipped cracked or broken.

He discovered how asbestos could help reinforce thin shingles made from cement. The asbestos network recommends bringing in a professional to collect samples. 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. It s available in a variety of sizes and shapes to match many of the old siding shingles installed over the last 60 years.

Asbestos cement can be dangerous if pulverized by sawing sanding breaking etc. The naturally occurring asbestos occurs as long and thin fibrous crystals. We include research articles as well as patent citations that help trace the use of asbestos cement in and on buildings from the late 1800 s to the present. This patent describing rolled asbestos cement board or shingle siding illustrates the characteristic and popular wood grain like embossed finished surface on these products.

Older style cement siding shingles were traditionally made by mixing asbestos into the cement in order to fireproof and strengthen siding. Patent 2 818 824 issued january 7 1958. A hardened mixture of asbestos fibers portland cement and water used in relatively thin slabs for shingles wallboard and siding asbestos siding was first introduced into the us in the early 1900 s by austrian engineer ludwid hatschek. The only way to be sure whether your siding contains asbestos is to have it tested.

According to merriam webster asbestos cement is. Here asbestos is present in the fibrous form. The siding may also contain asbestos if it is old with a wood grain texture to resemble cedar. It is very brittle and has a tendency to crack and break when nailed which can release asbestos fibers into both the air and ground.

Weatherside fiber cement siding is the 1 and weatherside fiber cement siding is the 1 and only solution for replacing or repairing old asbestos siding shingles. The resulting combination was then formed into a variety of siding shingle sizes profiles and textures and allowed to harden. Exposure to and breathing asbestos fibers can result in lung problems and cancer. Testing your siding for asbestos.

Asbestos cement board siding and shingle.