Originally asbestos was used as the reinforcing material but due to safety concerns that was replaced by cellulose in the 1980s.
Cement asbestos board siding.
Cementious siding and roofing such as fiber cement siding lap siding and fiber cement roof shingles containing asbestos may then have appeared on homes constructed between 1906 and 1980 in north america and continuing later in some other countries.
It s available in a variety of sizes and shapes to match many of the old siding shingles installed over the last 60 years.
Remember asbestos is a problem only if fibers are released to the air.
Click to enlarge any image read clinton i and francis h.
Read s 1958 patent for asbestos cement siding that is prepared with a colored and embossed or patterned surface resembling wood shingles or wood board siding.
Sometimes it is possible to work around asbestos without removing it.
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 board siding and shingle.
Asbestos cement can be dangerous if pulverized by sawing sanding breaking etc.
However if asbestos containing siding must be.
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.
Patent 2 818 824 issued january 7 1958.
Fiber cement board may come pre painted or pre stained or can be done so after its installation.
Hence the safest easiest and least expensive option may be to leave it alone.
It s available in a variety of sizes and shapes to match many of the old siding shingles installed over the last 60 years.
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.
He discovered how asbestos could help reinforce thin shingles made from cement.
Asbestos siding is composed of asbestos fibers mixed with portland cement.
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.
According to merriam webster asbestos cement is.
Asbestos cement siding is very brittle and can be easily chipped cracked or broken.
Unless cement asbestos board siding is being disturbed it will not release asbestos fibers.
For more information contact dnrec aqm.
Dnrec aqm has available two other guides in this series spray on pop corn ceiling and sheet vinyl flooring with asbestos backing.
Fiber cement siding is a building material used to cover the exterior of a building in both commercial and domestic applications.
This publication is limited to the removal of cement asbestos board siding one of the three most common asbestos abatement projects attempted by homeowners.
Exposure to and breathing asbestos fibers can result in lung problems and cancer.
