Recent content by Spiderfish

I think it depends on what you're going over. In my case, I leveled the ground well before putting the insulation down, however since I was going over packed dirt I likely wouldn't have been comfortable using anything less than 1". If you're going to leave the existing sand in place and it's...

I used 1" extruded insulation, taped the seams with sheathing tape, and then covered it with a layer of 60 mil EPDM roofing membrane (similar to pond liner material) under my Intex 12x24 Ultraframe. The membrane was likely unnecessary, however being in the roofing industry, I had it laying...