If the asbestos material is in good shape and will not be disturbed do nothing.
What do asbestos siding shingles look like.
It is usually brittle and the back may be black and have the appearance of tar paper.
Asbestos cement was first developed in 1905 by the johns manville company who became one of the premier manufacturers of cement asbestos materials.
In this photo of a house in new york state we can see both original cement asbestos wall shingles and newer fiber cement replacement wall shingles that do not contain asbestos.
Testing for positive id.
If they look old they might have asbestos fibers in them.
The portland cement binds asbestos fibers into a hard mass.
This is the wavy edge asbestos cement shingle siding product.
Most likely the shingles are in two sizes 12 inch or 24 inch.
Asbestos shingles are relatively strong but brittle.
A brief history of asbestos cement siding.
You can t drive screws and nails through them without pre drilling.
Covering old asbestos shingles with new siding may seem like an option too but it s not easy to do safely.
Asbestos siding was manufactured to resemble many materials so it won t always look the same.
Photo guide to cement asbestos wall shingles or siding products.
Asbestos cement roofing shingles and siding products are not likely to release asbestos fibers unless sawed dilled or cut.
This is the most common pattern used.
Look for siding that looks like roof shingles.
This would trigger dust and asbestos dust is a problem as i ve mentioned.
The bottom of an asbestos siding tile may have a wave like pattern though not always.
Determine when the shingles were installed on your roof.
If you don t know the age of the shingles inspect them for wear.
The best method for determining if a substance contains.
Asbestos cement is a mixture of portland cement reinforced with asbestos fibers.