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Reply to "Sound deadening materials"

Richie C. posted:

IMHO, 3/4" plywood is overkill and not necessary. You should be able to use 3/8" - 1/2" with no issues, including being able to stand on it, if necessary, especially if you're building on 16" centers.

The foam sheets you are referencing are typically 3/4" or 1" thick semi-rigid 4' X 8' sheets sold at HD (pink)  or Lowes (blue/green). There are also 2" thick foam sheets which some people use as the base, itself, but that is not what you'd be in the market for.

I've never used homasote or Woodlands roadbed before so I can't answer your other questions.  I have used a 1/4" thick soft foam made for Fastrack and sold on the bay, which is fairly quiet when placed over wood and/or semi-rigid foam. 

 

Richie, 

I have the plywood already left over so while overkill yes, it is available. Will allow me to reduce substructure too. I actually have urethane sealing foam in a roll from another project that I thought may make things quieter.  Would like to get opinions, as I know what tubular and fastrak sounds like on a bare sheet of ply and it is annoying to say the least. Fine for the Christmas Village, but.... want to do this right.

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
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