Re: Replacing plank subfloor with plywood
Solid planks can span further distances than plywood, particularly if they are tongue and groove, so it is likely that the subfloor framing will have to be beefed up to accommodate using plywood in place of the existing planks. Generally, this isn't too big a deal, but it must be addressed, especially if you plan to install tile.
Originally Posted by jennyp
As for the height issues, this will depend upon the thickness of the existing planks vs. the thickness of the plywood being used plus whatever radiant heating/finished floor you're going to install over it. I would recommend you go over these calculations with your contractor to determine if changing the planks is going to provide the space you need. Worst case scenario, you'll have to move the outlets out of the baseboards or at least raise them enough to accommodate the new finished floor height.
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