spray foam foundation wall
that a boy. mice are the least of your worries. knee wall sounds like good option. seems like dead space anyway. good place for dust bunnies to end upWe ended up going 100% foam.
My home is 100% foam - walls, ceiling and basement where the foundation meets the wood - it is extremely efficient, tight, you cannot hear much from outside. We have an air exchanger to keep fresh air movingWe ended up going 100% foam.
We needed to have an air exchanger to keep fresh air moving
I'm told this is now code. We had to get an HRV, so I figured might as well go 100% foam. It's not that much more, and it might actually be less.
Sig's words were also echoing in my head.
Will re-consider the knee wall if it's not too late.