Reddit reviews Cork Sheets - Plain 24" x 36", 1/4" thick
We found 2 Reddit comments about Cork Sheets - Plain 24" x 36", 1/4" thick. Here are the top ones, ranked by their Reddit score.
Versatile UsageHigh QualityFine grain corkMade with high tensile strength and solid compressionEasy to cut and shape
I'll be posting links to related items in Amazon and elsewhere so you can get an idea. By no means is this an endorsement for Amazon (peh, I wish) but just to get an idea of costs. This would be identical to the platform my coach and I made and it dampens sound very well. As mentioned, stable mats are quite dense and do not deaden the vibrations particularly well. Going with a composite "fleck" rubber flooring holds it's shape well and deadens the sound much better. A layer of cork between your base layers will further deaden the vibrations. Finally, making sure you have a full 8'x8' platform (or larger if you can manage it) will deaden the vibrations the most.
IF you shop around you can likely build this for under $200 (provided you can use HDF/particle board for the runway). Most likely if you are in a hurry it might cost about $50 more.
Extra credit - lay your platform down on cheap rubber drainage mats to further ease vibrations, and to also have a place where plates can fall to the floor without damage to either plate or floor. link for drainage matting
You can order it in size and thickness