• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources the cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • Anne Miller
  • Pearl Sutton
  • r ranson
  • Mike Haasl
  • James Freyr
  • paul wheaton
  • Joylynn Hardesty
  • Burra Maluca
garden masters:
  • Steve Thorn
  • Greg Martin
  • Kate Downham
  • Jay Angler
  • thomas rubino

INSULATION: Foam board shavings as insulation?

Posts: 2
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hello Everyone,

I am currently retrofitting and old home to make it more environmentally friendly and energy efficient. And insulation is simply one of those things that needs to be done. I have access to bags and bags of polyiso foam insulation shavings and various sizes of foam off-cuttings that if not used will end up in the dump. I was wondering if anyone has any information on whether or not foam shavings can be used as a substitute for fiber glass blow-in insulation?
Posts: 6581
Location: Arkansas - Zone 7B/8A stoney, sandy loam soil pH 6.5
hugelkultur dog forest garden duck fish fungi hunting books chicken writing homestead
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Since insulation is all about creating "still air" spaces to stop the flow of cold or heat, I see no reason why you could not use those leftover materials with good success.

The trick will be getting it in place with just enough air space. The other concern would be settling, which happens with all forms of insulation except the spray on foam type.

Posts: 334
Location: S. Ontario Canada
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Why not! It's light enough that you can easily double the depth and make up for any shortcomings in an attic. Wall cavities might be better off with a known insulation value.
Posts: 232
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi Carlos.

I have "heard" of folks using a Chipper /wood chipper to chip up foam remnants. then bagging it to use for insulating.

there might be somone on the web who has attempted this and shared it.

having used sheets of remnants from a SIPS panel factory to superinsulate my space, i know those tiny little beads
can statically cling to you and everything around you. The fellows who worked in the SIPS place all shaved their heads
to keep it from 'sticking in their hair'
Hey, sticks and stones baby. And maybe a wee mention of my stuff:
2020 SKIP: Skills to Inherit Property (PEP1) event --July 12-25th, Wheaton Labs
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!