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420 Aluminium Powder

420 Aluminium Powder will increase the hardness and abrasion resistance of the coated surface and improve its moisture resistance. 420 provides limited protection from ultraviolet light in areas that will not be protected with other coatings and can be used as a base for subsequent painting. Add to any mixed WEST SYSTEM 105/200 Series Hardener combination.

Designed for:

  • Moisture Resistance
  • Abrasion Resistance
  • Colour Modifications
WEST SYSTEM| image: Amazon Product Listing Photos (12)


Create an abrasion and moisture-resistant surface in:

  • Fibreglass Repairs
  • Reusable Mould Surfaces
  • Boat Bottom Fortification
  • Composite Aluminium Castings


  • Colour | Metallic Grey
  • Cures to Metallic Grey
  • Fine Aluminium Powder


  • Add between 5% to 10% by volume


  • 420 | 0.1kg



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.

Fibreglass Repairs

Recently we revised our most popular instruction manual, Fibreglass Boat Repair & Maintenance, bringing it up to date and expanding it to 146 pages. It contains the very latest fibreglass repair techniques and features complete sections devoted to repairing cracks, holes, damaged skins, cores, keels, and rudders, installing hardware, installing teak veneer decks, gelcoat blister repair and prevention, and final fairing and finishing.

Using WEST SYSTEMFillers & Additives