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422 Barrier Coat Additive
While WEST SYSTEM® Epoxy creates an excellent moisture barrier by itself, 422 Barrier Coat Additive is a proprietary blend designed to improve cured epoxy’s moisture exclusion effectiveness further. 422 is used as a barrier coating additive to help prevent gelcoat blistering in polyester fiberglass boats. 422 also increases the epoxy’s abrasion resistance. Add to any mixed WEST SYSTEM 105/200 Series Hardener combination.
Designed for :
- Moisture Resistance
- Abrasion Resistance
- Preventing Gelcoat Blistering
PROJECT USES:
Create an abrasion and moisture-resistant surface in:
- Fiberglass Repairs
- Gelcoat Blister Repairs
- Boat Restoration
- Rudder Restoration
- Moisture Exclusion
PRODUCT SPECIFICATIONS:
- Color | Light Gray
- Cures to Gray
MIX RATIOS:
- 16 oz of 422 will modify up to 0.5 gal of mixed epoxy
- 15-20% by volume (3 tbsp) | 8 fl oz epoxy
Product Size:
- 422 | 16 oz
Additives
QUICK LINKS Helpful Tips, Safety Guidelines, Manuals, and More:
Thickening
Modifying with fillers and additives makes WEST SYSTEM epoxy extremely versatile for a wide variety of bonding and coating applications. Epoxy can be thickened to the ideal consistency needed for a particular job. Epoxy thickened with adhesive (high-density) fillers strengthens structural bonds, bridges gaps, and fills voids. Epoxy thickened with fairing (low-density) fillers is easily sanded and shaped after it cures.