The bottom of an asbestos siding tile may have a wave like pattern though not always.
What do asbestos siding shingles look like.
If they look old they might have asbestos fibers in them.
Look for siding that looks like roof shingles.
This would trigger dust and asbestos dust is a problem as i ve mentioned.
Testing for positive id.
The best method for determining if a substance contains.
Asbestos cement is a mixture of portland cement reinforced with asbestos fibers.
Old asbestos siding tiles may also have a wood grain texture like cedar.
The portland cement binds asbestos fibers into a hard mass.
You can t drive screws and nails through them without pre drilling.
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.
Photo guide to cement asbestos wall shingles or siding products.
A brief history of asbestos cement siding.
Asbestos siding was manufactured to resemble many materials so it won t always look the same.
It is usually brittle and the back may be black and have the appearance of tar paper.
Asbestos cement roofing shingles and siding products are not likely to release asbestos fibers unless sawed dilled or cut.
This is the wavy edge asbestos cement shingle siding product.
The front may have a grainy sandy texture.
Covering old asbestos shingles with new siding may seem like an option too but it s not easy to do safely.
Determine when the shingles were installed on your roof.
This is the most common pattern used.
Asbestos shingles are relatively strong but brittle.
If you don t know the age of the shingles inspect them for wear.
Most likely the shingles are in two sizes 12 inch or 24 inch.