On Wed, 5 Nov 2003 16:42:17 -0500, Your Name Here
wrote:

- To make the floor sprung, I can get some rubber blocks that can be
install on top of the concrete.

If you have the height, spring it properly. Traditional way was to
build a "forest" of short stub posts, fasten wooden "springs" to these
(horizontal wooden bars, of ash or maple) and then build a framework
supported on the free ends of the spring bars. Then lay the flooring
over the frame.

Rubber isn't the same thing at all. Blocks are lumpy (and not springy
enough), a sheet layer isn't thick or spring enough. I think some
modern floors have used air springs (thick rubbber balloons).

You definitely need a frame between the springs and the flooring
material, especially with modern thin laminates.

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Die Gotterspammerung - Junkmail of the Gods