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Anonymous (not verified)
no sub floor

i am buying a house that was built in 1900 and the floor is just tounge and groove. could i overlay the floor with 3/4" tongue and groove plywood or what would be the best way to sturdy the floor up? we are going to completly gut and redo this house.

Re: no sub floor

If the existing flooring isn't split or cracked then overlay with 3/4 t&g would work.

It's likely the old boards probably have become loose over the years so the nails would need to be reset and you might consider putting in a ring shank nail or screw into each plank to insure they're fastened securely.... before laying the new sheathing.

If there will be areas of the old floor will be in need of replacing .... like bathrooms / kitchens ... there will be the need for matching theheight of the replacement floor with the rest.

Just a thought. :)

Anonymous (not verified)
Re: no sub floor

thanks for the info!!

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