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How to tell if asbestos siding.
If you suspect that your siding may contain asbestos there is no need for alarm.
Installed before 1978 the fiber cement shingles probably contain asbestos.
Asbestos cement can be dangerous if pulverized by sawing sanding breaking etc.
It is generally very brittle and the back may be black and have the appearance of tar paper.
Asbestos cement siding is very brittle and can be easily chipped cracked or broken.
Roofing and siding shingles are among the most common materials to contain asbestos and will readily release fibers into the air if broken.
Identifying asbestos siding the only way to be sure if your siding has asbestos in it is to collect a sample and send it to an accredited testing lab.
While older homes will likely contain asbestos in roofing insulation and tiles it can also be present in exterior siding.
Asbestos was also put into cement used on the exterior of buildings to help insulate the.
It may be smooth or have a pressed wood grain pattern on the surface of the board.
Asbestos shingles were so common during the 20th century that almost any shingles installed between 1920 and 1986 probably include asbestos.
Contractors and inspectors or anyone identifying asbestos siding can t tell from just an on site inspection whether or not your siding really has asbestos in it.
If they look old they might have asbestos fibers in them.
Asbestos siding was manufactured to resemble many different materials so it doesn t always look the same.
Age or date of installation.
Asbestos was used to make several exterior materials.
Asbestos was particularly prevalent in siding that resembles shingles or was made to look like wood grain.
Layers of paint or finish coatings.
If you don t know the age of the shingles inspect them for wear.
If your siding has these characteristics then asbestos could be present.
Inspect exterior building materials.
Asbestos ranks high on the list of dangerous substances because of its toxic and carcinogenic properties when airborne.
Look for a siding that is made to look like roof shingles.
It does have some characteristics too look for.
The only true way to identify asbestos siding is to have it tested.
Determine when the shingles were installed on your roof.
The use of a pressure washer for maintenance can crack the siding and lead to moisture intrusion if the pressure setting is high enough.
Put on a mask and scrape away some siding material into a baggie.
