Zlosk
New Member
I am cobbling together a foam part (pink insulation, EVA, and foam in a can) with the intent to make a fiberglass mold. I've read a lot of posts that talk of using PVA as a sealer for the foam. I believe this is polyvinyl acetate.
After applying the sealer, I'll go on to the rondo and sand stage. I should then apply a couple coats of PVA, letting them dry into a film to act as a mold release. I believe this is polyvinyl alcohol. Finally, I should apply a couple thin coats of resin, then start the fiberglass buildup.
Question 1 of 2: Am I correct in believing that I need both forms of PVA?
Also, in the talk of sealing foam, I've seen people talk of using Elmer's glue, wood glue, and modge podge. While at Home Depot, I saw PVA Drywall Primer & Sealer.
Question 2 of 2: Is PVA Drywall Primer & Sealer an acceptable form of PVA, or should I make sure that I use a PVA adhesive instead?
After applying the sealer, I'll go on to the rondo and sand stage. I should then apply a couple coats of PVA, letting them dry into a film to act as a mold release. I believe this is polyvinyl alcohol. Finally, I should apply a couple thin coats of resin, then start the fiberglass buildup.
Question 1 of 2: Am I correct in believing that I need both forms of PVA?
Also, in the talk of sealing foam, I've seen people talk of using Elmer's glue, wood glue, and modge podge. While at Home Depot, I saw PVA Drywall Primer & Sealer.
Question 2 of 2: Is PVA Drywall Primer & Sealer an acceptable form of PVA, or should I make sure that I use a PVA adhesive instead?