PAM Cooking spray provides a "Non-Stick" surface for your foods & your fiberglass molds! Before you start fiberglassing on wood or any other surface, remember to cover the mold with a "mold release". Many household items can be used; masking tape being one of the most popular choices. However, many Fiberglassing professionals choose to use a non-stick cooking spray.
All I use is wax specifically formulated for fiberglass molds. I've never had to use a mold release agent AND wax. Bob Pottle