Older building have a higher probability of containing asbestos building materials.
Asbestos concrete roof tiles.
As a building material asbestos was very widely used between the 1950s and 90s especially as a roofing material due to its fire resistant properties.
How to identify asbestos roof tiles.
The use of asbestos cement roof shingles was growing at a steady rate in the united states.
Because there are fiber cement roofing products that replaced asbestos fiber cement roofing products that were subsequently made when asbestos use stopped and because those newer roofing products look so much like the older asbestos containing product without a marking stamped into the roofing material that gives an age product number or.
They are a cement based material known for being hard wearing and can last for more than 40 years.
This meant that roofs that were made from.
This is because until the 1980s asbestos was not fully recognised to be hazardous to the health of anyone exposed to its fibres.
However it is advisable that you use a competent and experienced contractor who is aware of the guidelines associated with removing asbestos roof tiles and their disposal.
Take the sample to an asbestos testing laboratory.
When replacing the tiles with safer options do not do so carelessly.
Just to make sure take two or three samples for comparison.
The cost of testing a small sample is reasonable.
Asbestos roofing tiles are predominately comprised of cement.
As asbestos cement is considered a relatively low risk asbestos material you do need not a licensed contractor for removing asbestos roof products.
This type of roofing material can have various colors from different shades of grey to red green and even blue.
The fire resistant properties of these roof tiles weren t the only reason they were so popular as asbestos is incredibly durable and strong.
All mastic or bitumen based pressed metal roof tiles should be suspected of containing asbestos.
But other types of roof tiles containing asbestos also exist.
If the tile has less than 1 percent asbestos then the results are negative.
Asbestos cement roof tiles are usually square shaped and their color is a combination of grey and black.
Tiles which contain asbestos include mastic or bitumen based pressed metal roof tiles that were produced prior to the early 1980s.
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.
They can last for more than 40 years and if undamaged they pose little risk of exposure.
