I have just started putting back the foam plastic after reinforcing the walls and am wondering if I can place the boards flush against the walls as shown in the picture or if some movement allowance is needed?
Foam boards placed tightly against reinforced walls, questioning if expansion gap is needed.
 
No room for movement, strict adherence applies.
 
pacman42 pacman42 said:
No room for movement, snug fit required.
Thanks (y)
 
No gaps, you lose insulation capability if there's a chance of drafts.
Protte
 
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