503 Grey Pigment is an epoxy-based liquid colourant used to tint the epoxy mixture grey, providing an even, grey colour base for the final finish system. Coloured surfaces also tend to highlight flaws and imperfections. Cured, pigmented epoxy surfaces are not a final finish surface but require an additional paint or UV filter coating for ultraviolet protection. You can blend it into any WEST SYSTEM 105 Resin/200 Series Hardener combination, G/flex Epoxy 650, or G/5 Five-Minute Adhesive.
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.
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.