ARKMat Interlocking Garage Workshop Mats 1M x 1M Heavy Duty EVA 24mm Thick

Excellent product. I have used these to insulate a cold floor. I made a platform from them to put under a bed. as a result the bed doesn't get so cold. Its has stopped drafts coming up through floor boards. Would also be a great solution for making a room sound proof as the insulating propeties are very good and it's so easy to fit them together.