Hi! I've been lurking in the threads and I think I want to put down foam under my 24' round intex pool this year. I don't have the pink stuff available. Is this insulated sheathing a good alternative? Thanks for any help you can offer! http://www.homedepot.com/p/R-Tech-1-2-in-x-4-ft-x-8-ft-R-1-93-Insulating-Sheathing-320810/202533656?MERCH=REC-_-cart_rr-_-202532854-_-202533656-_-N