Concerns about asbestos contaminated vermiculite insulation.
Asbestos in attic uk.
While remodeling the attic of his 1960s home john found piles of brown pebble like insulation.
There is one primary source of asbestos attic insulation.
If your attic or wall insulation is in batt or blanket form whether it s fiberglass cellulose or another material you generally don t have to be concerned about asbestos.
Asbestos was also put into cement used on the exterior of buildings to help insulate the.
Once vermiculite is disturbed millions of asbestos fibers become airborne.
A mine near libby montana was the source of over 70 percent of all vermiculite sold in the united states from 1919 to 1990.
Roofing and siding shingles are among the most common materials to contain asbestos and will readily release fibers into the air if broken.
There are other sources of asbestos in attic insulation but this single source significantly outpaces the others the primary source of asbestos attic insulation is from a specific mine in montana operated for 70 years by the libby company according to the environmental protection.
Asbestos was used to make several exterior materials.
Consider this statement from research titled zonolite attic insulation exposure studies where even the suggested method for removal by the manufacturer.
There was also a deposit of asbestos at that mine so the vermiculite from libby was contaminated with asbestos.
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The types of insulation that were most commonly made with asbestos are loose fill also called blown in insulation.
Asbestos is actually a natural fiber so if your attic insulation looks like wool there is a slight chance that it will contain asbestos.
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He decided to replace the existing insulation with new fiberglass insulation to save money in the winter months.
Loose fill insulation comes in a variety of materials.
Attic insulation in older homes may contain asbestos that could fall through ceiling cracks.
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Most older cement board products contain asbestos.