West System® 422 Barrier Coat Additive 16 ounces


SKU: 655-42216 Categories: ,


A proprietary blend designed to improve cured epoxy’s moisture exclusion effectiveness. 422 is used as a barrier coating additive to help prevent gelcoat blistering in polyester fiberglass boat bulls. 422 also increases the epoxy’s abrasion resistance. Cures to a light gray color.

Add to mixed resin/hardener at the rate of 15 to 20% by volume or 3 tablespoons per 8 fl oz of epoxy. 16 oz can of 422 will modify approximately half a gallon of mixed epoxy.

16 oz


Additional information

Weight 1.4 lbs
Dimensions 3 × 3 × 6 in


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