Surfacing Agent - Add to Gallon of Gelcoat

In this instance, 4 oz. of Surfacing Agent will be mixed into your gelcoat. Be careful, though, because the wax's job is to come to the surface during cure to seal the surface from air. It will do that in the can as well. Please make sure that you mix the gelcoat and wax solution thoroughly in the can each time before you pour into your measuring cups so that the solution is equally dispersed throughout your batches. Read the mix chart for more product information. Mix Chart for Polyester and Vinylester FAQ Gelcoats