When a building is quite old it has a good chance of having asbestos building materials.
How to identify asbestos roof shingles.
Asbestos cement roof tiles are usually square shaped and their color is a combination of grey and black.
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.
Asbestos hardly needs an introduction anymore as most homeowners should be schooled in the general dangers of disturbing and breathing asbestos fibers.
Shingles placed on a roof before the mid 1980s might contain asbestos.
In older homes specifically asbestos may be found in many different materials from pipe insulation to flooring adhesive to roof shingles.
This government guide contains a useful diagram to identify where asbestos may be present on your property.
They can last for more than 40 years and if undamaged.
Determine the age of the building.
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It was one of the most used types of asbestos containing material for roof building mainly as an underlayment.
The use of asbestos cement roof shingles was growing at a steady rate in the united states.
It is virtually impossible for anyone but a trained professional with a high powered microscope to tell definitively whether a shingle contains asbestos.
It is black and pretty difficult to remove.
Asphalt shingles yes roofing manufactures have admitted to using trace amounts of asbestos in the fiber mat from around 1964 1976.
Asbestos was used from the early 20s to the late 80s.
However during extensive sampling of material from re roof projects with tear offs the occurrence rate of find asbestos is less than 1.
On roofs themselves asbestos cement can be frequently found in the form of panels gutters insulation roof shingles siding downpipes or the entire roof itself.
The only way to accurately identify asbestos roof tiles is to have them tested by a ukas accredited laboratory.
Asbestos roof tiles are usually square shaped and their colour is generally a combination of grey and black.
However asbestos can be a range of colours depending on the material it is mixed with.
