Asbestos shingles were so common during the 20th century that almost any shingles installed between 1920 and 1986 probably include asbestos.
What does asbestos shingle siding look like.
This would trigger dust and asbestos dust is a problem as i ve mentioned.
Even if asbestos shingles are on your home if they are in good condition and left undisturbed they are usually not a serious problem.
Asbestos siding was manufactured to resemble many different materials so it doesn t always look the same.
Recognizing siding with asbestos.
The front may have a grainy sandy texture.
Look for a siding that is made to look like roof shingles.
Asbestos itself is actually a rock that has an fibrous makeup that looks a lot like hair or fur.
If you don t know the age of the shingles inspect them for wear.
Determine when the shingles were installed on your roof.
Here are some ideas about what to look for.
It is usually brittle and the back may be black and have the appearance of tar paper.
Anonymous by private email toronto 2020 07 03 moderator reply.
It is very brittle and has a black tar paper like backing.
Covering old asbestos shingles with new siding may seem like an option too but it s not easy to do safely.
Look for siding that looks like roof shingles.
The portland cement binds asbestos fibers into a hard mass.
Asbestos siding is a type of siding that was introduced in the 1920 s as a fire proof cladding for buildings and homes that could also resist rot and insects.
Commonly made to look like brick faux brick asphalt building siding also appears in faux stone versions not to be mistaken for perma stone which has been sold since the 1960 s as an exterior wall covering and even in a wood shingle lookalike as well as a utilitarian covering that was unabashedly plain asphalt sheeting.
If they look old they might have asbestos fibers in them.
You can t drive screws and nails through them without pre drilling.
The front appears with a grainy sandy like texture.
Asbestos siding was manufactured to resemble many materials so it won t always look the same.
Asbestos siding usually looks a lot like roof shingles.
A brief history of asbestos cement siding.
Asbestos cement was first developed in 1905 by the johns manville company who became one of the premier manufacturers of cement asbestos materials.
It doesn t look like the asbestos shingles i see online.
Asbestos cement is a mixture of portland cement reinforced with asbestos fibers.
Unfortunately asbestos siding was originally designed to mimic many different types of materials.
When the fibers become airborne they pose health concerns.
Because asbestos in a mineral and fibrous adding asbestos to siding materials also increases strength and durability while providing some insulation and fireproofing to the structure.
Asbestos cement shingle siding or less likely mineral covered asphalt fiberboard metal shingles turns out to be plywood.
Asbestos shingles are relatively strong but brittle.
