If you don t know the age of the shingles inspect them for wear.
How long do asbestos roofs last.
There are at least three types of asbestos shingles.
This is one of the most common questions we get asked by clients as well as how much does it cost to replace a roof.
The asbestos content in a typical asbestos cement roof is between 2 and 8 and this is encapsulated within the cement matrix.
Neither question has an easy answer because both depend on a number of variables.
The use of asbestos cement roof shingles was growing at a steady rate in the united states.
Accordingly if the material contains less than 1.
Determine when the shingles were installed on your roof.
As long as the condition of the roof sheets is good then there is little risk of asbestos contamination.
So read on to learn how long different types of shingles are likely to last so you can judge the lifespan of your roof.
Cement asbestos roof shingles typically have a much shorter life than the siding panels.
Let s break it down.
Contemporary roofing product manufacturers make reinforced fiber cement roofing shingles and other roofing products which look like perform similarly to and need to be installed similarly to the original corrugated asbestos cement sheet roofing but these new products are free of asbestos.
7 signs you need a new roof asphalt shingles last 15 to 30 years.
The result of the test will lead you to the next step.
The thicker ones are about a quarter of an inch and i ve seen them last 70 to 85 years.
Most of the times asbestos roofing materials are not dangerous if not damaged and left undisturbed.
It is not unreasonable to expect 100 years from a properly maintained asbestos roof.
There is more information about asbestos roofs in the slate roof bible.
Asbestos shingles were so common during the 20th century that almost any shingles installed between 1920 and 1986 probably include asbestos.
The thinner shingles about an eighth of an inch thick typically last about 50 to 60 years.
Manufacturers used to make shingles that would last 40 years but those shingles were made using asbestos which is not used any longer.
How long do asbestos roofs last.
Regular flat shingle tiles standard lap are shown below as are common diamond shaped tiles and side.
Hi the first floor of my house has large portion of it covered by asbestos cement it has been so for a few decades now.
The only way to know for sure whether your roof contains asbestos is to have a sample tested by professionals in a certified laboratory.
