Quote:
Originally Posted by Mikethebuilder
Hi guys,
I'm using 1x2 furring strips for my subfloor and didn't think ahead to check the available thicknesses at Home Depot. I ended up having to go with 1" polyiso. This is leaving about a 1/4” gap between the top of the furring strip and the top of the insulation boards (insulation being taller than the furring strips). Should this cause any issues?
I thought about ripping down some of the scrap 1x2's and cutting them into a bunch of spacers that I can glue on top of the furring strips to support the top layer of plywood once I lay that down. Not sure if that is necessary?
Any thoughts would be greatly appreciated!
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The issue will be that your screws will pull through your flooring when you try to send them home tight; or, the floor will squeak because the fastener couldn't cinch the two pieces of wood tight.
The fix would be to include a spacer on the furring strips. Could be 1/4" ply or even masonite (I'd stick to plywood). Make sure the furring strips stand proud (higher than) the insulation, otherwise you may see a dip in the finished floor wherever two pieces of subfloor meet.
Best practice is to glue everything down, even if you just use a thin bead of adhesive.