The front may have a grainy sandy texture.
What do asbestos siding shingles look like.
The portland cement binds asbestos fibers into a hard mass.
If the asbestos material is in good shape and will not be disturbed do nothing.
Determine when the shingles were installed on your roof.
Asbestos shingles were so common during the 20th century that almost any shingles installed between 1920 and 1986 probably include asbestos.
A brief history of asbestos cement siding.
Most likely the shingles are in two sizes 12 inch or 24 inch.
Asbestos shingles are relatively strong but brittle.
Asbestos cement roofing shingles and siding products are not likely to release asbestos fibers unless sawed dilled or cut.
The best method for determining if a substance contains.
The bottom of an asbestos siding tile may have a wave like pattern though not always.
This is the wavy edge asbestos cement shingle siding product.
Covering old asbestos shingles with new siding may seem like an option too but it s not easy to do safely.
It is usually brittle and the back may be black and have the appearance of tar paper.
This is the most common pattern used.
If you don t know the age of the shingles inspect them for wear.
Old asbestos siding tiles may also have a wood grain texture like cedar.
Asbestos siding was manufactured to resemble many materials so it won t always look the same.
This would trigger dust and asbestos dust is a problem as i ve mentioned.
Look for siding that looks like roof shingles.
If they look old they might have asbestos fibers in them.
Photo guide to cement asbestos wall shingles or siding products.
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.