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A pure white, hollow glass bubble based, low density filler designed for filling and fairing of fibreglass.
When the filler is mixed with WEST SYSTEM epoxy at a ratio of 10% to 25% by weight, it creates a smooth creamy paste for filling and fairing over glass fibre repairs. The cured epoxy/filler is very easy to sand.
Being white in colour the cured epoxy filler mix will be hidden easily behind paint or polyester gelcoat but must be protected by further coats of epoxy if used below the waterline.

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WEST SYSTEM milled glass fibre blend filler Typ 402
A high density blended filler consisting of loose chopped glass and other fillers, intended for small semi structural repairs, filling voids, or small scale impact damage to glass fibre laminates.The finished repairs are incredibly strong, tough and resilient. When mixed with WEST SYSTEM epoxy at a ratio of approximately 25% by weight, the result is a thick paste that can be carefully stippled into place with a brush and can be held in place with PVC tape or peel ply to give a smooth finish to the repair.Typical uses include deep void repair due to osmotic damage; damage to dinghy rudder and centre boards and hard edge impact damage on small sailboats.

From €21.90 *
WEST SYSTEM Microfibres Typ 403
A blend of fine cotton fibers, used as a thickening additive for bonding applications.Epoxy thickened with 403 fibres provides good wetting out of the substrate and excellent gap-filling properties. They give the resin a better viscoplasticity and absorb tensile forces.Add 4% to 16% by weight of 403 to WEST SYSTEM epoxy mix. Colour: off-white.

From €15.50 *
WEST SYSTEM colloidal silica filler Typ 406
General purpose thickening additive suitable for bonding, gap-filling and filleting. It can be used to prevent resin flow on vertical and overhead surfaces and to control the viscosity of the epoxy. It is often used in combination with other fillers to control the working characteristics of an epoxy mix, e.g. improve the consistency of fairing compounds. Add 3% to 8% by weight to the resin/hardener mix. Colour: off-white.

From €15.20 *
WEST SYSTEM low-density filler Typ 407
A blended microballoon-based filler used to make fairing putties which are easy to sand but remain strong on a strength-to-weight basis. Add 20% to 40% by weight to mixed WEST SYSTEM epoxy. Cures to a dark reddish-brown colour.

From €24.90 *
WEST SYSTEM microsphere blend filler Typ 409
A pure white, hollow glass bubble based, low density filler designed for filling and fairing of fibreglass. When the filler is mixed with WEST SYSTEM epoxy at a ratio of 10% to 25% by weight, it creates a smooth creamy paste for filling and fairing over glass fibre repairs. The cured epoxy/filler is very easy to sand. Being white in colour the cured epoxy filler mix will be hidden easily behind paint or polyester gelcoat but must be protected by further coats of epoxy if used below the waterline.

From €14.90 *
WEST SYSTEM Microlight Filler Typ 410
410 MicrolightT is the ideal low-density filler for creating a lightweight, easily worked fairing compound especially suited for large areas. Microlight is easily blended into the epoxy mix at additions between 7% to 16% by weight and when cured is easier to sand than any other filled system. Holds a feather edge and is more cost effective than other fillers. Not recommended for high temperature applications and should not be coated with dark colours. Cures to a tan colour.

From €17.90 *
WEST SYSTEM filleting blend filler Typ 405
Consists of a mix of cellulose fibres and other fillers for use in filleting applications when a naturally finished interior is intended. Alchohol or waterbased stains may be added to adjust the colour. Add 15% to 25% by weight to the epoxy mix.Colour: tan.

From €15.50 *
WEST SYSTEM high-density filler Typ 404
A filler developed to maximise bond strength in hardware bonding where high cyclic loads are anticipated.With this, rather heavy filler, epoxy of highest compressive and tensile strength can be produced.It can also be used for filleting and gap-filling applications, but it is difficult to grind.May be added to the resin/hardener at a rate of 35% to 60% by weight, depending on the viscosity needed. Colour: off-white.

From €17.50 *
WEST SYSTEM aluminium powder additive typ 420
Add between 5% to 10% by volume to provide protection from ultraviolet light in areas which will not be protected with other coatings and as a base for subsequent painting. Will substantially increase the hardness of the coated surface. Additives are mixed with the epoxy to alter the physical properties when used as a coating. Additives can be used to alter the colour, abrasion resistance or moisture resistance of cured epoxy.

€9.95 *
WEST SYSTEM barrier coat additive typ 422
A proprietary blend designed to improve the moisture-exclusion effectiveness of WEST SYSTEM epoxy and to combat osmosis. It is an excellent additive for providing a barrier coating to overcome gelcoat blistering and also increases the abrasion resistance. Add 20% to 25% by weight of 422 to the mixed epoxy. Additives are mixed with the epoxy to alter the physical properties when used as a coating. Additives can be used to alter the colour, abrasion resistance or moisture resistance of cured epoxy.

From €25.50 *
WEST SYSTEM graphite powder additive typ 423
A fine black powder added to WEST SYSTEM epoxy (10% by volume) to produce a low-friction exterior coating with increased scuff resistance, durability and mar-resistance. Epoxy/graphite is commonly used as a coating on rudders and centreboards or on the bottoms of racing craft that are dry sailed. The epoxy/ graphite mix can also be used in teak deck construction to simulate traditional seams in appearance and to protect the resin from sunlight. Additives are mixed with the epoxy to alter the physical properties when used as a coating. Additives can be used to alter the colour, abrasion resistance or moisture resistance of cured epoxy.

€19.50 *
WEST SYSTEM colour pigments
Can be added to the epoxy to provide a base colour for a final finish system. The coloured surfaces also tend to highlight flaws and imperfections. Pigments should be added at a rate of approximately 3%-5% by weight and should only be added to the final coat of epoxy because the increased viscosity of the mix will impair the ability of the epoxy to penetrate and seal surfaces. Available in white (501), black (502), grey (503) and blue (505). Additives are mixed with the epoxy to alter the physical properties when used as a coating. Additives can be used to alter the colour, abrasion resistance or moisture resistance of cured epoxy.

From €20.80 *