Paint is expensive. The Galeria Extender is an honest, practical medium that addresses that fact directly — a highly economical acrylic medium that increases the volume of paint while maintaining its opacity and quality. Add it to any acrylic colour on the palette and the paint goes further without the colour becoming weak, transparent, or washed out, as it would if water were used to extend it instead.
The key distinction between the Extender and simply adding water is opacity. Water thins and dilutes paint, reducing pigment concentration and causing colour to lose its covering power. The Extender adds volume using an acrylic-based formula that is fully compatible with the paint film, maintaining the structural integrity of the paint and keeping colours opaque and strong. It dries to a matt finish, which adds a further useful quality — for painters who want to reduce the natural satin sheen of Galeria paint to a flatter finish, the Extender serves that purpose simultaneously with its volume-extending function.
Beyond extending paint on the palette, the Extender has additional practical uses. It can be used to thin paint to a more fluid consistency for smooth, even coverage over large areas. Applied directly to the canvas or support before painting, it facilitates blending by keeping the paint surface workable for longer. It can also be used to clean brushes between colour changes during a painting session. All Galeria mediums share the same acrylic binder and are fully intermixable with one another and with Galeria Acrylic paint. Resistant to yellowing.
What does the Galeria Extender actually do? It increases the volume of acrylic paint while maintaining opacity and colour strength. Unlike water, which reduces pigment concentration and covering power, the Extender adds bulk using an acrylic-compatible formula that keeps the paint film stable, opaque, and structurally sound. Colour dries to a matt finish.
Is it the same as adding water to the paint? No — this is the key practical difference. Adding water dilutes the paint and reduces opacity, causing colour to lose its covering power. The Extender increases volume without reducing pigment concentration, maintaining the opacity and quality of the colour while making it go further.
Does it affect the finish of the paint? Yes — paint mixed with Extender dries to a matt finish. This is a useful secondary quality for painters who want to reduce the natural satin sheen of Galeria Acrylic paint.
Can it be used for purposes other than extending paint? Yes — it can also be used to thin paint for smoother coverage over large areas, applied to the canvas to facilitate blending, and used to clean brushes between colour changes during a painting session.
Is it compatible with other Galeria mediums? Yes — all Galeria mediums share the same acrylic binder and are fully intermixable with each other and with Galeria Acrylic paint.
Does it yellow over time? No — the Extender is formulated to resist yellowing, keeping the paint film stable and colour-neutral over time.
