Engine compartment soundproofing

Discussion in 'Downeast Engine Room' started by Jonathan Carey, Mar 25, 2018.

  1. Jonathan Carey

    Jonathan Carey Member

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    Looking for recommendations on sound proofing for engine compartment. Thanks in advance!
     
  2. xbskt

    xbskt Captain

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  3. crabz

    crabz Senior Member

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  4. Genius

    Genius Captain

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    I believe first level of attack is closing all gaps that let sound out. Also gaskets on engine hatches, etc. Then sounddown panels to bulkheads and engine room overhead/hatches. Others also use carpeting/mats and or underlayment atop the engine area to control sound.
     
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  5. Toolate

    Toolate Captain

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    Anyone have a source for a good, thick gasket that is maybe 1/2” x 1 1/4” medium density, closed cell, adhesive backed?
     
  6. Gurryman

    Gurryman Captain

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    Rubber Seal Material, 3 types
     
  7. Toolate

    Toolate Captain

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    Looks like it might be too thick for me. Is it adhesive backed or just get some double sided tape?
     
  8. Gurryman

    Gurryman Captain

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    No adhesive, I used to use a water based 2 part epoxy made by Lord Chemical.
     
  9. nick5446

    nick5446 Member

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    Hi - working on a similar project and someone suggested a 2 part expanding foam for insulation. Anyone know if this would hold up to the heat of an engine? I can't find anything online.
     
  10. TAftw

    TAftw Senior Member

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    That stuff is probably extremely flammable. I don’t think that would be the best option for soundproofing in an engine companrtment.
     
  11. Dr. Chip

    Dr. Chip Senior Member

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    This place has a dizzying array of stuff..

    D-Profile Sponge Rubber Seals
     
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  12. cg_Duffy

    cg_Duffy Member

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    Second on the soundown. 2" thick, 2lb / ft^2.

    Seal all hatches with foam tape; available with adhesive in every possible width, thickness and density one could ever want from McMaster Carr. Pack all cable conduits with foam.

    No exhaust hangers connected to floor.

    If you really want to get after it, more Soundown 2lb/ft^2 carpet underlayment on top.

    While not absolutely precise, there are decent apps for iphones that measure sound pressure levels so you can get a fell for progress you are making; or not.
     

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