Asbestos Siding Is It Cement Board

Asbestos cement can be dangerous if pulverized by sawing sanding breaking etc.

Asbestos siding is it cement board.

Asbestos cement siding is very brittle and can be easily chipped cracked or broken. Asbestos cement roofing siding history dates codes patents give a history of cement asbestos siding roofing product use. According to merriam webster asbestos cement is. Exposure to and breathing asbestos fibers can result in lung problems and cancer.

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 only way to be sure whether your siding contains asbestos is to have it tested. Here asbestos is present in the fibrous form. He discovered how asbestos could help reinforce thin shingles made from cement.

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 siding was manufactured by adding asbestos fibers which are a naturally occurring mineral to portland cement. 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. 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.

The naturally occurring asbestos occurs as long and thin fibrous crystals. Older style cement siding shingles were traditionally made by mixing asbestos into the cement in order to fireproof and strengthen siding. Testing your siding for asbestos. 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.

Asbestos cement board siding and shingle. This article gives a history of the production use of asbestos cement roofing siding products. Asbestos is a mineral and cement sheets or fibro are materials that are useful as building materials and are made up of asbestos and cement mixture. The siding may also contain asbestos if it is old with a wood grain texture to resemble cedar.

Patent 2 818 824 issued january 7 1958. If your siding fits either of these descriptions you should consider having it tested. 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. Asbestos siding is composed of asbestos fibers mixed with portland cement.

The resulting combination was then formed into a variety of siding shingle sizes profiles and textures and allowed to harden.