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anthony777 11-10-2011 07:52 PM

insulating basement half walls-my plan
would this be an ok way to finish my basement walls?

-remove bag insulation
-attach 1 1/2" C-300 Extruded Polystyrene Rigid Insulation from floor to bottom of the 2x4 wall (this is about 6 feet up from floor)
-this 2x4 wall already has insulation in it with a plastic vapor barrier.
-it is also 1 1/2" out from the concrete foundation so the foam will fit perfectly
-tape and sprayfoam all gaps
-i will then put drywall over that

thanks in advance!

anthony777 11-10-2011 07:55 PM

2 Attachment(s)

Gary in WA 11-11-2011 07:51 PM

Where are you located?


anthony777 11-11-2011 09:28 PM

Toronto, Canada

Gary in WA 11-15-2011 09:39 PM

Fig.2-10 with a wood framed wall or fig. 2-11 with strapping, ask your local AHJ for guidance:

To confuse you further:

Some tests done in your location:


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