Tongue-and-groove OSB over 3/4″ foam problem
I’m helping a friend with a basement remodel..
Winnipeg, Manitoba Canada zone 7.
1040 sq/ft basement, concrete walls and floor. no exterior insulation.
We are gluing (PL300) 2.5 inches EPS foam to interior walls. Then 2×4 walls (24″ o/c) with R14 Roxul, no poly then drywall). The wall foam is bonded to the floor foam with spray foam in a can. The corners and seams are all taped. The top will be foamed with a froth pack to seal against rim joists.
Laid 3/4″ foam to floors (is this supposed to be glued to the floor as well (PL300)?
The floor is not perfectly level but pretty good.
The 5/8 t&g OSB is the problem.
When laid on the floor the long sides (4×8 sheets) have t&g and lock together, the short sides don’t and are moving.
How do we prevent this movement on the short sides of the panels?
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