As an energy auditor I occasionally see vermiculite in the gas fireplaces. Does anyone know if any of the vermiculite they use(d) for fireplaces has asbestos fibers and if it's safe to run blower door?

Thank you

Tags: Fireplace, Vermiculite

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All that really matters is to assume it's an ACM until "proven" otherwise or professionally remediated & tested clear by an industial hygenist.

Testing is free from the ZAI Trust for vermiculite anywhere in a home & they pay for remediation (55% of up to $7,500 in expenses)

http://www.zonoliteatticinsulation.com/

Just do it!

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