Sand filled floating floors?
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Posted on Nov 19, 2010 12:18 am
FATFryan
Member Since: Nov 14, 2010
Would that be a good idea at all? We had an idea of just using sand instead of insulation for the subframed floor we're going to build. Didn't know if this had been tried before or if it would be cost effective.
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Nov 19, 2010 12:47 am My guess is green glue might be cheaper, but on the real side I suggest doing some real research on how effective that is first. And consider materials for floating floors if you are going to go that far cost might be a factor.
el musicoFreeleance Producer/Engineer/GtrMember
Since: Aug 11, 2002
Nov 21, 2010 01:19 am I've built floating floors and I'm not sure about any benefit from filling it with sand, mainly due to how I floated mine. I ordered these rubber pucks that were designed to cup a 2x4 on it's side. It is the only thing between the frame of the floor and the foundation placed at measured intervals. They have a measured density and are designed to compress with the weight of the floor with a certain weight limit per square foot. If you go beyond that limit you will drastically degrade the decoupling that puck would provide. Adding sand could make things real heavy real quick.
With that said, I can only compare it to what I have done and I'm not an acoustician.
Nov 21, 2010 03:41 am Where could i get these rubber pucks?
Nov 21, 2010 03:51 am My main reason for NEEDING to float the floors is because the foundation for the room I'm building has sank from the block perimeter as much as 3" in certain places. It seems the concrete that was poured was of poor quality and poured on an ill-ready ground. The block edge is 100% intact and I planned on putting in a full subframe that ties into the wall frame and rests on the edge with supports placed throughout the gaps where it had sank.
