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OSB or PLY on old tongue & groove

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  • 19-07-2018 2:31pm
    #1
    AltFact
    Registered Users Posts: 12 ✭


    Hi,
    At the end(!) of rennovating a 40 year old house. The first floor flooring is tongue & groove which is battered in places where it was removed for Elec & Plumbing changes.


    Want to attempt to sound insulate as best as I can so intend to:
    - add insulation between joints.
    - screw back in T&G where removed
    - lay a layer of OSB or Plywood on top
    - seal the joints on this with a silicone?

    - Lay an underlay
    - Lay the laminate


    I don't mind losing some height (will replace or cut doors if need).

    Should I use Plywood or OSB here?
    12mm suffice for my needs?
    thanks
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