Concrete Roof Tiles Asbestos

The use of asbestos cement roof shingles was growing at a steady rate in the united states.

Concrete roof tiles asbestos.

Regular flat shingle tiles standard lap are shown below as are common diamond shaped tiles and side lap tiles. Tiles which contain asbestos include mastic or bitumen based pressed metal roof tiles that were produced prior to the early 1980s. 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.

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. This type of roofing material can have various colors from different shades of grey to red green and even blue. Other replacements for asbestos cement roofing use both different fibers and a different aggregate perlite to replace the asbestos. 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.

The asbestos content will vary on the manufacturer but the content will typically be 15 or less. 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. Removing asbestos roof tiles. How to identify asbestos roof tiles.

When replacing the tiles with safer options do not do so carelessly. If the tile has less than 1 percent asbestos then the results are negative. Take the sample to an asbestos testing laboratory. The fire resistant properties of these roof tiles weren t the only reason they were so popular as asbestos is incredibly durable and strong.

Some of the substitute products have been in use for more than 30 years 2008. Asbestos roofing tiles are predominately comprised of cement. Just to make sure take two or three samples for comparison. The cost of testing a small sample is reasonable.

This meant that roofs that were made from. 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. But other types of roof tiles containing asbestos also exist.