Someone told me about using sand on floating the floor

hugo_inside · Post by **hugo_inside** » Tue Nov 09, 2004 7:33 pm

What about this? This guy advice me for framing the floor and use wet sand and plastic over it and then a mix of concrete and "idon'tknow" and then the plies of wood.

dymaxian · Post by **dymaxian** » Wed Nov 10, 2004 1:29 am

If you're putting wet sand in your floor, you're going to need to go to an extreme to make sure that it's perfectly sealed from the wood. Any of that moisture starts getting out and your floor will become mold central.

This is going to be very difficult- to the point where I'd recommend you do NOT do it. Even using dry sand isn't good, because once moisture gets in there it takes forever to dry, especially in a dark, un-vented area.

The "floating floor" thread has all kinds of suggestions on what to put in there to dampen the floor.

dk01 · Post by **dk01** » Wed Nov 10, 2004 10:12 am

I have heard of filling between your floor joists with sand - dry sand... Dry sand would add all the density you would need if you went this route. Wet sand seems like complete overkill to me. My info comes courtesy of ASC. (for what its worth)

Best Regards,

David

knightfly · Post by **knightfly** » Sun Nov 14, 2004 3:53 pm

Dry sand is self-compacting (a GOOD thing) and doesn't cause moisture problems as long as it doesn't get wet - wet sand, however, will cause problems from moisture and again when/if it dries, and loses volume - it will then leave an air gap which is NOT a good thing in this type floor, at least in that location within the floor... Steve

AndrewMc · Post by **AndrewMc** » Mon Nov 15, 2004 5:14 am

Avoid using wet sand under your floor - this sounds like a disaster waiting to happen.

I used dry sand in my drum riser - taking a lot of care to make sure it was perfectly dry by spreading it out in the sun for a day and constantly raking it.

Dry sand is like sugar - if it has any moisture it will clump.