I used just one layer of Warm and Natural -- the regular type with scrim. I might have been smart enough to place the scrim side down but I'm not sure. Covered that layer with inexpensive duck cloth from Walmart. Has worked fine for me for several years now. Biggest problem I have is that the duck cloth is now stained, plus it collects cat hair like a magnet. The top is still functional, but it looks terrible. Haven't decided whether to replace the duck cloth or just staple another layer over the old one. One nice thing about duck cloth is that you can mist it with water after you staple it on and it will tighten up. If I were ambitious, I would make a removeable cover for my board so I could wash it. Maybe some day......