INSULATION: Foam board shavings as insulation?

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?

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.

Redhawk

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.

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'