KCStudly wrote:I recommend that you skin the outside surface of your foam before applying the epoxy/FG.
I glassed directly over a combination of foam, light weight spackle filler and guide coat primer, and had (am still having) troubles... small areas of lack of adhesion and some hand sized blistering (puffed out areas as if something was still out gassing... which I will need to drill and see if I can get to lay back down and adhere using the syringe method.
KC,
Thanks for stopping by and offering advice. If $50 worth of 1/8" ply is the answer to all the problems you have been having I am all for it - hang the weight. I am curious, though, if you know which bond layer(s) failed for you. Foam to spackle, spackle to primer, or primer to epoxy. What brands were you using? I am using Dow Blue Styrofoam and Raka Inc non-blushing epoxy resin and hardener.
Lou