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Epoxy/Filler/Additive – West System – 422-16 Barrier Coat Additive

$51.96

Epoxy/Filler/Additive – West System – 422-16 Barrier Coat Additive

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Description

Epoxy/FIller/Additive – West System – 422-16 Barrier Coat Additive

West System – 422-16 Barrier Coat Additive
A propriety blend designed to improve cured epoxy’s moisture-exclusion effectiveness. This product is used as a barrier coating additive to help prevent gelcoat blistering in polyester fiberglass boat hulls. It also increases the epoxy’s abrasion resistance.

BARRIER COAT ADDITIVE
Colour: Light Grey

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.

 

Good to know

  • Designed to improve cured epoxy’s moisture-exclusion effectiveness
  • Blend it with 105 resin
  • Help prevent gelcoat blistering in polyester fiberglass boat hulls
  • Increases the epoxy’s abrasion resistance

MFG#; C422-16, C422-48

Alternative Part Numbers: 422-16, 655-42216, WSY 42216, 0296-1392, 02961392, 04-7037
8960640 – 422-16  Barrier Coat Additive 16 oz Package

 

 

Additional information

West Syste- 422 Barrier Coat Additive

Repairing individual Gelcoat blisters from time to time and improving ventilation may head off the problem and avoid the need for a full-blown barrier job. For step-by-step instructions on repairing individual Gelcoat blisters and taking steps to prevent more Gelcoat blisters in the future, read Repairing Individual Gelcoat Blisters in Epoxyworks Magazine.

Check out more Epoxyworks articles about using this epoxy additive to further enhance moisture exclusion: Retired Gougeon Technical Advisor Bruce Neiderer uses 422 to help keep Gelcoat blisters at bay on Triple Threat, his 1981 Pearson Flyer that’s still competing on the Great Lakes today. Barrier Coat Additive was also used in restoring an International 110 class sailboat. And in completely rebuilding a rudder.

This downloadable PDF provides a detailed explanation of Moisture Exclusion Effectiveness (MEE), the property that 422 enhances when added to WEST SYSTEM Epoxy.

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