Do you have to let plywood sub flooring acclimate before installing it as a sub floor ? The plywood was kept outside in 15 degree temps for a week or so. If so, how long ?
I am installing vinyl planks over it and have to wait 48 hours for the vinyl to acclimate.
Outdoors? Where and for how long? I would suggest a much longer period of acclimation. Even though plywood expands and contracts little, what you don't want to see is gapping of the vinyl planks weeks or months later aftert the installation. It's possible.