Healthy indoor air quality
How to Know if Vermiculite Insulation has Asbestos, and do I Leave It Undisturbed or Have it Removed?
...air point.
How safe is it to leave Vermiculite in attics?
The general consensus is, that it when undisturbed, asbestos-contaminated vermiculite in attics does not pose an air quality risk to the conditioned space below. That does not mean it is entirely risk-free, specifically for homes with very poor air sealing.
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