Asbestos was incorporated in the insulation of different types including attic insulation.
Asbestos in attic.
Asbestos is dangerous because it contains what is known as fibrous crystals.
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Asbestos can be found in the insulation used in walls attics the materials around plumbing and pipes electrical wiring as well as on heating and air conditioning units.
These are thin visible fibers.
Here are selected photos on this topic but full relevance is not guaranteed.
Asbestos is actually a natural fiber so if your attic insulation looks like wool there is a slight chance that it will contain asbestos.
Asbestos attic insulation photos.
There are many different kinds of wool like insulation that are man made and do not have asbestos but if your attic insulation looks like wool than it is best to be safe and have it tested by a professional.
If you do not go into your attic handle or disturb the insulation it is likely that you will not be exposed to asbestos fibers from vermiculite insulation.
The types of insulation that were most commonly made with asbestos are loose fill also called blown in 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.
Also you need to consider if any disturbance of the insulation possibly by a contractor doing work in your attic may result in the fibers being deposited into other areas of your house where an exposure might be possible.