Hi! I'm not real familiar with that material, but I think that as long as it is springy and bounces back to it's original shape after being stepped on time after time then it should work well. Foam mats are another option (like the foam mat tiles you might see in a kids' play area). If the insulated boards bounce back they may be a good option if they're more durable than the mattress foam that I used.
Floor PianoView Instructable »