The use of asbestos cement roof shingles was growing at a steady rate in the united states.
Asbestos indoor roof tiles.
Asbestos roof tiles are usually square shaped and their colour is generally a combination of grey and black.
They can last for more than 40 years and if undamaged they pose little risk of exposure.
Older building have a higher probability of containing asbestos building materials.
However asbestos can be a range of colours depending on the material it is mixed with.
Ceilings were also covered with cement asbestos products as a fire barrier in boiler rooms and similar locations.
Take the sample to an asbestos testing laboratory.
The cost of testing a small sample is reasonable.
Crocidolite asbestos was also used in ceiling tile production.
The asbestos content will vary on the manufacturer but the content will typically be 15 or less.
Tiles which contain asbestos include mastic or bitumen based pressed metal roof tiles that were produced prior to the early 1980s.
If the tile has less than 1 percent asbestos then the results are negative.
While a tile that contains asbestos will be referenced as an asbestos tile it should be noted that these tiles are not made up of solely asbestos.
Amosite asbestos also a widely used form of asbestos was used in some ceiling tiles as well as in roof and floor tiles.
All mastic or bitumen based pressed metal roof tiles should be suspected of containing asbestos.
Asbestos cement roof tiles are usually square shaped and their color is a combination of grey and black.
However once considerable testing proved that it was a killer the miracle became a nightmare to deal with and remove.
Just to make sure take two or three samples for comparison.
Removing asbestos roof tiles.
Asbestos roof tiles were used from the early 1920s all the way in to the late 1980s.
The old tiles are relatively thin around 1 8 inch thick so installing new flooring on top.
This is because until the 1980s asbestos was not fully recognised to be hazardous to the health of anyone exposed to its fibres.
But other types of roof tiles containing asbestos also exist.
Asbestos roofing tiles are predominately comprised of cement.
When replacing the tiles with safer options do not do so carelessly.
In the early 1920s american roofing material manufacturers johns mansville carey eternit and century were all offering at least one asbestos cement roofing shingle to their customers.
One of the best ways to deal with asbestos tile is to leave it in place and cover it with new flooring.