I am remodeling a old farm house, it has 1X4 T&G flooring on it now I am wanting to put something over this ?

to make it smooth for floor covering. Can I use 4X8-7/16 OSB what they call wafer board. The carpenter used this same stuff but 3/4" to replace some of the rotten 1X4′s I am just trying to save money this house has cost me way to much already and I am running out of money fast. So if anyone has a idea of what I can use over this sub flooring that would be cheap please let me know. One carpenter suggested 4X8-1/2 CDX plywood and then rent a floor sander to smooth the ruff spots. I don’t know so if you have any good ideas please let me know and let me know about using the 7/16" OSB.
Also before I put down over-lay would it be wish to put down 15# felt between sub floor and over-lay ? There are a few spot in the 1X4′s with gaps no more than 1/8" I was thinking of this to block any air, etc., etc.,

I d determine what will be your final floor covering before I decide . You might be able to go as thin as 3/8 ply. But your final flooring may decide. Raising the flooring to much you may have troubles for clearances,such as entry doors ,dishwashers, refrigerator etc GL

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2 Responses to I am remodeling a old farm house, it has 1X4 T&G flooring on it now I am wanting to put something over this ?

  1. oneman2dogs says:

    Although OSB will work, your better choice is plywood
    References :

  2. rob s says:

    I d determine what will be your final floor covering before I decide . You might be able to go as thin as 3/8 ply. But your final flooring may decide. Raising the flooring to much you may have troubles for clearances,such as entry doors ,dishwashers, refrigerator etc GL
    References :
    20 years in flooring as a store owner/installer