refinishing wood floors

Discussion in 'Misc DIY' started by mo, Sep 4, 2006.

  1. mo

    mo Guest

    OK, I have a house built in the 1930`s with Northern
    Pine as my bedroom floors. I just finished sanding off all the old
    finish. My question is do I need to seal the floor before I polyurathane
    it or is it not necessary to seal before the finish?
    Also what is a good sealer and polyurathane? Or should a varnish
    or shellac be used instead of poly? Thanks
    mo, Sep 4, 2006
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  2. No sealer is needed. If using an oil based poly, thin the first coat with
    mineral spirits about 20%.

    Polyurethane is a varnish. Many floor finishers use the water base as it
    does not have the odors of the oil based. Water is more clear, oil gives
    warmer color.

    I like shellac, but it is rarely used on floors these days. Poly is usually
    easier to care for and is very durable.
    Edwin Pawlowski, Sep 4, 2006
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  3. Polyurethane can be both your sealer and your final finish. If you're
    staining your floors first, most stains have a sealer in them. Do not
    mix poly and shellac or varnish finishes. Poly will be one of the the
    toughest finishes you can apply if done right (it's what they use in
    roller rinks - imagine the abuse there!) If you want a harder poly
    finish consider catalyzed polyurethane (also known as a swedish finish)
    - however beware that this kind of finish can be difficult to work
    with. First the fumes can all but kill you, the working time is
    relatively short and whatever it gets on, it stays on (like tools.) For
    most folks, catalyzed poly is best left to professionals, but I was
    able to apply it myself (by carefully following instructions) with
    great results.

    jeffreydesign, Sep 4, 2006
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