Posted by wing15601 on 02/03/15 - 8:22 AM
#2
Actually the barrier coat used on boat bottoms to prevent osmotic blistering caused by water passing through gelcoat, is epoxy. You have to be aware that epoxy degrades when exposed to UV Rays (sunlight) so as long as you keep it covered with paint you will be fine. I would imagine the barrier coat material is somehow stabilized so it doesn't degrade but it's more expensive than plain epoxy resin.