Yes, could be. But if you let it acclimate properly, and install with proper paper underneath, etc., it shouldn't expand that much. Btu if it did,it pulls and pushes against the fasteners accordingly.

Each strip expands on its own. A floor installed with an elastomeric adhesive might move that much, but not nailed-down wood in a typical residential setting.

Not surprised that the 3/4" gap requirement is confusing. It is illogical.

Thanks.

I'm also installing in the "humid" part of the year (RH in the 30-50% range), with material that came from an even more humid area ... it has probably done all the expanding it's going to do.

And yes, it does seem illogical for that gap to be there. My older rooms (1890s install) have no gaps. At least where the walls are straight there are no gaps.

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