"i agree with the others that's it's old rock or mineral wool bats"
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Paul Bowman
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Unknown Old Insulation
15 Replies
I'm pretty sure I've never seen this stuff before. It's installed in rafters as batts, held in place by cardboard sheets below. Papery consistency, now crumbling. The house is ~1923, but no idea when…Continue
Started this discussion. Last reply by Matthew Redmond Dec 28, 2012.
Honest Buildings
9 Replies
This seems to be a fairly new thing, a site for showcasing green building/s and projects, designated by address on the map: Honest…Continue
Tags: marketing, social networking
Started this discussion. Last reply by Paul Bowman Apr 19, 2012.
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tedkidd replied to Paul Bowman's discussion Unknown Old Insulation"That IS an interesting link Brian! I've seen a straw version of that material:
Hey Rem, 2,000,000,000 BTU annual load? What "small house" are you thinking?
Most houses I've seen have 500-1800…"
"Hi Brian,
Thanks for sharing the brochures. The middle link shows a lot of detail. I found their heat loss savings calulations really interesting but way off if they are considering a house with no insulation to maybe an…"
Brian Robinson replied to Paul Bowman's discussion Unknown Old Insulation"We've seen this before on several occasions. It is a cellulosic based product - essentially crenulated or creped…"
Bob Kretvix replied to Paul Bowman's discussion Unknown Old Insulation"At least you know now. So many materials contain asbestos its probably more difficult to say it doesn't than it does. Good luck."
Paul Bowman replied to Paul Bowman's discussion Unknown Old Insulation"We had a sample of the insulation lab-tested, and the result was a negative without qualification — no asbestos found. This is only one case, of course. For all I know, some of the product was made with asbestos and some wasn't. But it…"
Andrew F. replied to Paul Bowman's discussion Unknown Old Insulation"looks like old rock wool batts"
Paul Bowman replied to Paul Bowman's discussion Unknown Old Insulation"Many thanks to all for suggestions here.
Over at InspectionNews someone else offered the name "Balsam Wool" — and with a little further digging online, that led me to what I now think is the actual answer, an old Kimberly-Clark…"
tedkidd replied to Paul Bowman's discussion Unknown Old Insulation"Expanding on the "humid area" question - do you think the material has gone through numerous wet/dry cycles? Looks like it's turned to dried oatmeal in the pictures"
Bob Kretvix replied to Paul Bowman's discussion Unknown Old Insulation"All I can say is that if it isn't known and has the appearance of something that could contain asbestos (i.e., not clearly fiberglass or mineral wool, etc), OSHA requires that it be PRESUMED to contain asbestos and treated as such until negated…"
Robert Riversong replied to Paul Bowman's discussion Unknown Old Insulation"It appears to be mineral wool, but it could also be an old Balsam Wool (wood-fiber) batt. Neither would contain asbestos."
Robert Meeker replied to Paul Bowman's discussion Unknown Old Insulation"It looks like some insulation I encountered on some ducting installed in the 1960s. I had it tested for asbestos and the results came back as just being all cellulose."
Glen Gallo replied to Paul Bowman's discussion Unknown Old Insulation"looks like old rock wool batts"
Bob Kretvix replied to Paul Bowman's discussion Unknown Old Insulation"Never saw this, but looks a little like air-cell pipe insulation. This is considered Presumed Asbestos Containing Material. You should have it tested by an accredited Asbestos Inspector before doing anything to disturb it. "
tedkidd replied to Paul Bowman's discussion Unknown Old Insulation"Cellulose? Where is this house, humid area?"
Paul Bowman's discussion was featuredUnknown Old Insulation
I'm pretty sure I've never seen this stuff before. It's installed in rafters as batts, held in place by cardboard sheets below. Papery consistency, now crumbling. The house is ~1923, but no idea when this was installed.Anyone know what it might be? Thanks for any help here.…See More
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- At 2:53am on October 28, 2011,
Diane Chojnowski said… Hi Paul,
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