Asbestos Siding Is It Cement Board

Patent 2 818 824 issued january 7 1958.

Asbestos siding is it cement board. 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. Testing your siding for asbestos.

The asbestos network recommends bringing in a professional to collect samples. 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 use of a pressure washer for maintenance can crack the siding and lead to moisture intrusion if the pressure setting is high enough. Asbestos cement roofing siding history dates codes patents give a history of cement asbestos siding roofing product use.

The naturally occurring asbestos occurs as long and thin fibrous crystals. Here asbestos is present in the fibrous form. If your siding fits either of these descriptions you should consider having it tested. Asbestos siding is composed of asbestos fibers mixed with portland cement.

Asbestos cement board siding and shingle. 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. Asbestos cement siding is very brittle and can be easily chipped cracked or broken. The siding may also contain asbestos if it is old with a wood grain texture to resemble cedar.

Exposure to and breathing asbestos fibers can result in lung problems and cancer. 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. According to merriam webster asbestos cement is. This patent describing rolled asbestos cement board or shingle siding illustrates the characteristic and popular wood grain like embossed finished surface on these products.

The resulting combination was then formed into a variety of siding shingle sizes profiles and textures and allowed to harden. The only way to be sure whether your siding contains asbestos is to have it tested. This article gives a history of the production use of asbestos cement roofing siding products. 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.

He discovered how asbestos could help reinforce thin shingles made from cement.