I am using this cork underlayment to deaden the sound of my HO train engines. With all the operating sounds now available it is important to reduce background noise to a minimum. The flat sheets certainly make it easy over rolled cork. I do wonder if I can/or need to glue it down to the plywood panel underneath. I don't have any results of the effectiveness of the cork yet but will let you know. I just wish that the item were available in half packages ( 4 sheets) since a box and a half would have been plenty for me (I think). Right now it looks very promising that this product will do everything that I hope it will do. No complaints whatsoever with this company! Shipping (FREE) was really fast. Thank you!