Or they can come into contact with skin and eventually find their way into the body.
Asbestos cement tile roof.
The typical life expectancy of an cement asbestos shingle roof was given as 30 years.
They would not warp or rot and were resistant to damage caused by insects.
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.
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.
Asbestos roofing tiles are predominately comprised of cement.
Asbestos cement roof shingles were in popular use in the u s.
Asbestos roof tiles are usually square shaped and their colour is generally a combination of grey and black.
The fire resistant properties of these roof tiles weren t the only reason they were so popular as asbestos is incredibly durable and strong.
It is black and pretty difficult to remove.
Manufactured from a mix of asbestos fibers and hydraulic cement asbestos cement roof shingles were rigid durable and fireproof.
Asbestos roof tiles can be dangerous.
They can last for more than 40 years and if undamaged they pose little risk of exposure.
Asbestos cement roof shingles were in popular use in the u s.
The asbestos content will vary on the manufacturer but the content will typically be 15 or less.
Asbestos roof tiles were used from the early 1920s all the way in to the late 1980s.
The thicker ones are about a quarter of an inch and i ve seen them last 70 to 85 years.
From the 1920 s est through the 1960 s est and were sold in the u s.
Into the 1970 s and according to some sources even in the 1980 s.
It was one of the most used types of asbestos containing material for roof building mainly as an underlayment.
They are a cement based material known for being hard wearing and can last for more than 40 years.
Cement asbestos roof shingles typically have a much shorter life than the siding panels.
This is because until the 1980s asbestos was not fully recognised to be hazardous to the health of anyone exposed to its fibres.
The thinner shingles about an eighth of an inch thick typically last about 50 to 60 years.
This meant that roofs that were made from these tiles had an incredibly long life expectancy far surpassing that of their non asbestos counterparts.
From the 1920 s est through the 1960 s est and were sold in the u s.
Into the 1970 s and according to some sources even in the 1980 s.
Asbestos cement roof tiles are usually square shaped and their color is a combination of grey and black.
