rsCVN-71,
hmmm, that's odd because usually it rolls up before you pull the backing off of it and after you pull it off the covering will usually lay flat. Anyway, the way you are supposed to apply the covering will take care of the rolling up issue. The way to do it is to first tack one corner down, and then move to another corner and pull it tight and tack it down, then the 3rd corner, and finally the last corner. Make sure you are pulling the covering straight and tight before you tack the corners. Now you can back and finish applying the covering without it rolling up.

Hope this helps