Replies

1. 
   Mike_Smith | Feb 12, 2000 11:53pm | #1

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   .............none that I can think of...except it doesn't do much to reduce sound transmission...usually better off trying other strategies..carpet on the 2d floor, or area rugs,, or resilient cannel to hang the ceilings, or homasote sound board....watch you plumbing waste pipes.. and ducts that penetrate floors.... gaps underneath bedroom doors...yada....yada...yada......

   if your customer is concerned about sound transmission...you've got to do some basic research or you might wind up with a disappointed customer... (raising or lowering expectations)

1. 
   Peter_J._Canistra | Mar 08, 2000 04:18am | #2

   *I am interested in builing a new house with radiant in floor heat. However, instead of installing the PEX piping into the slab or gypcrete, or simply stapling the PEX underneath the subfloor, I want to install the PEX into 6-8 in. of gravel in the crawlspace. I realize that I will not have an actual crawlspace due to the fact that the gravel will have to go right up to the floor joists but i can live with that. Has anyone out there had any experience with such a system or any suggestions or advice. Thank you.

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   Rich_Beckman | Mar 08, 2000 05:23am | #3

   *Peter,You really would be better off starting a new thread with that question. The radiant floor heat folks might not see it here. You should delete this and start a new thread. You might want to include the reasoni whyyou want to do this. I'm guessing the experts will want to know.Rich Beckman

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   jjmcgough | Mar 08, 2000 09:37am | #4

   *I'm interested in this strategy, Rich.Who knows, this may be our next lesson in thermodynamics.Peter, What is your hypothesis?Jeff

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   Bob_Walker | Mar 09, 2000 06:59pm | #5

   *Peter,I'd have 2 concerns with your proposal. First, I don't like putting any framing in contact with the ground (including gravel) because of the chance termites could use that as a path into the house. Second, I'd be very concerned about moisture build up on the framing and/or in the gravel and the possibility of mold growth. Even if you use pressure treated, I'd think long and hard about creating a perfect mold environment on the other side of my floor. (Of course, if you can guarantee no moisture will get into the gravel.... If you can, you've got a wonderful business opportunity with the technique you come up with)Bob Walker

2. 
   lonecat | Mar 09, 2000 06:59pm | #6

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   Might there be any unwanted consequences to randomly stuffing fiberglass in a lot of downstairs ceilings to deaden sound?