Additive : aluminium powder (for epoxy resins) 422 Barrier Coat Additive
West System
A proprietary blend designed to improve the moisture exclusion effectiveness of WEST SYSTEM epoxy. 422 also increases the abrasion resistance and is an excellent additive for providing a barrier coating to help prevent gelcoat blistering. Add 20 to 25% by weight of 422 to the mixed epoxy.
