We actually use Mold Release to keep it from sticking to the Mold. Gelcoat is called Gelcoat because it is Gelcoat, not part of the Fiberglas and you mix whatever color you want into it and apply. We place a mold, put on Resin, then we dip the fiberglas in resin adn put the sheets on the mold. We then roll it and squeege all the air out and dry it in an oven. Then we put 3 coats of white filler on it sanding each one with finer sandpaper. Finally we Gelcoat it with a coat of colored gelcoat and then a coat of clear. Works well on RVs and boats. http://search.yahoo.com/search?p=clothed+ladies.com&ei=utf-8&fr=ie8