Mark P Posted September 14, 2007 Report Share Posted September 14, 2007 Is fiberglass insulation combustible? Should it be pulled away from this fireplace flue? It has been like this since 1983, but since Iââ¬â¢m not sure, I think Iââ¬â¢ll recommend it be pulled away. I have seen in newer construction a warning label on metal furnace flues indicating insulation should not touch. What say you? Image Insert: 51.46 KB Quote Link to comment Share on other sites More sharing options...
hausdok Posted September 14, 2007 Report Share Posted September 14, 2007 Nope, it's not combustible. It's glass! I've seen that thousands of times and have never found where it's been an issue. OT - OF!!! M. Quote Link to comment Share on other sites More sharing options...
Mark P Posted September 14, 2007 Author Report Share Posted September 14, 2007 Thanks Mike! Quote Link to comment Share on other sites More sharing options...
ozofprev Posted September 14, 2007 Report Share Posted September 14, 2007 Heck with the fiberglass - how far is it from that wood? Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted September 14, 2007 Report Share Posted September 14, 2007 I'm not sure why (heat conductivity?) but combustibles AND building insulation are not allowed within 1" of b-vents. I've failed my way to success. -Thomas Edison Quote Link to comment Share on other sites More sharing options...
Mark P Posted September 14, 2007 Author Report Share Posted September 14, 2007 Good point, Gary. Sometimes I miss the forest for the trees. Quote Link to comment Share on other sites More sharing options...
inspector57 Posted September 14, 2007 Report Share Posted September 14, 2007 Most modern metal flues call for 2" clearance to insulation and combustibles. The pipe needs the air to keep the pipe cool, won't work as the manufacturer intended if you bury the pipe in insulation. Jim Quote Link to comment Share on other sites More sharing options...
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