Lead paint wasn t outlawed until 1978 so it s sure to be present on siding going back to the 1950s.
Asbestos cement siding shingles.
Asbestos cement was first developed in 1905 by the johns manville company who became one of the premier manufacturers of cement asbestos materials.
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.
It is available in a variety of sizes and shapes to match many of the old siding shingles installed over the last 60 years.
This article gives a history of the production use of asbestos cement roofing siding products.
Covering old asbestos shingles with new siding may seem like an option too but it s not easy to do safely.
A brief history of asbestos cement siding.
If it is a problem there are two types of corrections.
The use of asbestos cement roof shingles was growing at a steady rate in the united states.
The use of asbestos siding shingles was a popular one that was used in the us from the early part of the 20th century until the 1970s.
The siding was made by combining cement with asbestos which is a naturally occurring mineral that is fibrous in nature and fireproof.
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.
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.
Asbestos cement roofing siding history dates codes patents give a history of cement asbestos siding roofing product use.
Asbestos cement roofing shingles and siding products are not likely to release asbestos fibers unless sawed dilled or cut.
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.
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 was added to the cement because of its fire retardant properties as well as to add strength and durability to the siding shingles as well as insulating capacity.
In the early 1920s american roofing material manufacturers johns mansville carey eternit and century were all offering at least one asbestos cement roofing shingle to their customers.
Asbestos shingles are relatively strong but.
The portland cement binds asbestos fibers into a hard mass.
Asbestos cement is a mixture of portland cement reinforced with asbestos fibers.
Repair and removal.
Asbestos health concerns unfortunately though there was a lurking problem with asbestos that took decades to confirm.
