Does the rubber bottom provide any cushion or spring when installed on concrete? Or would i need to put down a foam or other thick type underlayment?
These Tiles do not provide cushioning or spring. If you are looking to cushion or add spring to your dance floors, I recommend checking out our wide selection of dance subfloors found here (https://www.rubberflooringinc.com/dance-flooring/index.html#!filter=889)