Asked on Sep 4, 2019

How do you "soundproof" a 2nd floor subfloor?

Pam WalkerLifestyles HomesTinyshoes


I am on the 2nd floor and would like to soundproof my sub floor. What materials can I use to place between the beams before I cover the floor with plywood and tile?

4 answers
  • Emily
    on Sep 4, 2019

    Could you spread insulation between your joists before doing the plywood/tile covering? We used spray on in our attic but on most t.v. home improvement shows they use batting.

  • Tinyshoes
    on Sep 4, 2019

    Vik....I understand they have material for residential as well as commercial use. Google Impacta Acoustical Floor Underlayments by Sound Seal. Good luck!

  • Lifestyles Homes
    on Sep 4, 2019

    You want a product with a high Sound Transmission Coefficient (STC) not a Sound Absorption Coefficient.

    I specify Homosote products, as that’s their business - sound mitigation. Music studios, radio station booths, TV studios- they all use Homosote.

    Check out their website and see what’s stocked at your local full line lumber yards and most big box stores.

  • Pam Walker
    on Sep 8, 2019

    THRIFT STORE BLANKETS or clothes. Pack them tight. They will absorb the sound & because they're inside the floor, you can't see them & company can't see them.

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