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.
Asbestos cement tile roof.
When replacing the tiles with safer options do not do so carelessly.
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.
The cost of testing a small sample is reasonable.
We consider asbestos cement roof shingles a durable and fire resistant roof and an asset to the building provided that the roof is in good condition.
As asbestos cement is considered a relatively low risk asbestos material you do need not a licensed contractor for removing asbestos roof products.
Take the sample to an asbestos testing laboratory.
Removing asbestos roof tiles.
Asbestos cement roof tiles are usually square shaped and their color is a combination of grey and black.
They are a cement based material known for being hard wearing and can last for more than 40 years.
But because asbestos cement roofing is easily damaged by a heavy footed worker unfamiliar with the materials involved asbestos cement roofs have to be repaired and maintained with the same care.
They can last for more than 40 years and if undamaged they pose little risk of exposure.
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.
If the tile has less than 1 percent asbestos then the results are negative.
How to identify asbestos roof tiles.
The use of asbestos cement roof shingles was growing at a steady rate in the united states.
Just to make sure take two or three samples for comparison.
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.
The asbestos content will vary on the manufacturer but the content will typically be 15 or less.
Many asbestos roofing materials have been present since the early 20th century.
This type of roofing material can have various colors from different shades of grey to red green and even blue.
Asbestos roofing tiles are predominately comprised of cement.
Without looking at the roof its impossible to say what s on it if it is asbestos cement tiles it would most likely be made up of 90 cement 10 asbestos the fact its been on the roof for so long means in reality their will be very little asbestos left as the weather will have eroded most of it as long as its left alone it is not an issue its only really an issue disposing of it this will.
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.
