Tiles which contain asbestos include mastic or bitumen based pressed metal roof tiles that were produced prior to the early 1980s.
Asbestos roof ridge tiles.
However asbestos can be a range of colours depending on the material it is mixed with.
Asbestos roof tiles are usually square shaped and their colour is generally a combination of grey and black.
All mastic or bitumen based pressed metal roof tiles should be suspected of containing asbestos.
Regular flat shingle tiles standard lap are shown below as are common diamond shaped tiles and side lap tiles.
The asbestos content will vary on the manufacturer but the content will typically be 15 or less.
They can last for more than 40 years and if undamaged they pose little risk of exposure.
It may be difficult to find asbestos replacement tiles that match the original roof in color although we link to a page listing sources of asbestos tiles.
But other types of roof tiles containing asbestos also exist.
Asbestos roof tiles can be dangerous the main reason why asbestos roof tiles need to be replaced by safer alternatives is that the asbestos fibers used to build the material pose a health hazard when inhaled and when they come into contact with the skin.
Asbestos roof tiles were used from the early 1920s all the way in to the late 1980s.
This is because until the 1980s asbestos was not fully recognised to be hazardous to the health of anyone exposed to its fibres.
The fire resistant properties of these roof tiles weren t the only reason they were so popular as asbestos is incredibly durable and strong.
This type of roofing material can have various colors from different shades of grey to red green and even blue.
Older building have a higher probability of containing asbestos building materials.
However once considerable testing proved that it was a killer the miracle became a nightmare to deal with and remove.
The only way to accurately identify asbestos roof tiles is to have them tested by a ukas accredited laboratory.
The use of asbestos cement roof shingles was growing at a steady rate in the united states.
Asbestos roof removal and replacement.
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.
This is why knowing how to identify asbestos roof tiles and removing asbestos roof tiles is highly recommended if they re damaged or old.
Asbestos roofing tiles are predominately comprised of cement.
