West System 422 Barrier Coat Additive
Buy West System 422 Barrier Coat Additive for marine yacht epoxy projects and Osmosys treatment, with free delivery to the UK.
A proprietary blend designed to improve the moisture-exclusion effectiveness of West System epoxy and to combat osmosis. It is an excellent additive for providing a barrier coating to overcome gelcoat blistering and also increases the abrasion resistance. Add 20% to 25% by weight to the mixed epoxy.