How much does a plywood subfloor move?

23 Jul.,2022

I’ve been reading the various floor expansion threads with amusement. It’s coming to the fore again on my current project because we have to lay floor in a kitchen we’re […]

 

High Quality Pine Plywood

I’ve been reading the various floor expansion threads with amusement. It’s coming to the fore again on my current project because we have to lay floor in a kitchen we’re working on where the heat has been largely off all winter. It’s on a new plywood subfloor over a fairly damp dry-layed stone cellar.

One thing that comes up when my partner and I start debating how best to “acclimate” the flooring before laying it, is the issue of whether or not the subfloor is expanding and contracting as well, and by how much.

I assume the movement is minimal enough to be a non-issue, he feels more strongly that it is significant. Anyone have any data on plywood panel movement?

There will be much more to say as this post starts drawing in the flies, but for starters lets discuss the plywood movement question…

Steve

Edited 3/9/2008 4:28 pm by mmoogie