Re: Help on hardwood Dance Floor Posted by anymouse 10/28/2008 7:55:00 AM
"I have never been in a studio in which the dance floor was built atop concrete. They have all been on the second floors of buildings for that reason, so as not to be on concrete foundation."
I've been in at least two built on slabs, but they were built/converted by knowledgeable dancers who used a complete flooring system - not just boards on concrete, but something to provide a moisture barrier and compliance under the boards.
Often if the room is very large and the dance floor does not cover all of it, there will be a step up of several cm to get from the surrounding building floor onto the dance floor. Some of today's clip-based systems are even compatible with rented space as you can take the floor apart into component boards and save almost all of them to reinstall elsewhere. The floor isn't actually nailed down, it just sits there, a cm or two smaller than the room if it goes to the walls to allow for expansion.