Mike Lamb Posted August 21, 2019 Report Share Posted August 21, 2019 Would fiberglass stuffed around a duct penetration be an acceptable fire stop? Link to comment Share on other sites More sharing options...
Chad Fabry Posted August 21, 2019 Report Share Posted August 21, 2019 No 1 Link to comment Share on other sites More sharing options...
Jim Katen Posted August 22, 2019 Report Share Posted August 22, 2019 In my area, it's been accepted. In fact, I had a city inspector suggest it to me at an inspection of my very own personal house. 1 Link to comment Share on other sites More sharing options...
Bill Kibbel Posted August 22, 2019 Report Share Posted August 22, 2019 Fiberglass is an approved material for fireblocking around ducts and other penetrations - as long as it's installed so that it securely remains in place. The latter is left open to interpretation. 1 Link to comment Share on other sites More sharing options...
inspector57 Posted August 22, 2019 Report Share Posted August 22, 2019 Depends on the building. Residential single family, yes. High rise multifamily, no. Link to comment Share on other sites More sharing options...
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