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Winsor & Newton Galeria Extender (250ml)


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  • Designed for use with acrylic paints
  • Economically extends paint volume
  • Matt finish
  • 250ml pot
  • Flip-top lid

Was £13.35

Now £9.99
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Video: Winsor & Newton Galeria Mediums

Winsor & Newton Galeria is a collection of mediums designed to enhance the creations of artists working with acrylic paint, such as Winsor & Newton’s Galeria Acrylic Colour range. Highly economical, Galeria Extender increases the volume of paint, whilst maintaining quality and opacity of colour. 

What is a Medium?

Any liquid which changes the consistency of the paint it is mixed with may be classed as a medium. Winsor & Newton Galeria Acrylic Mediums are designed specifically for use with acrylic paints, and range from thin glaze to thick impasto mediums, with a variety of choices in between.

Why use a Medium?

By changing the properties of paint, a medium extends the possibilities of how an artist works with the colour, and affords a plethora of exciting techniques and effects.

Winsor & Newton Mediums Finder provides an easy, interactive method of choosing the correct medium, for the artist to achieve the desired effect.

Why choose Winsor & Newton Galeria Extender?

All Winsor & Newton Galeria Mediums are fully intermixable, and can be layered or mixed on the palette, allowing the artist to fully explore both the textural and visual properties of Acrylic Colour. An inexpensive method of increasing and extending paint volume, adding Galeria Extender gives a visible matt effect to the colour upon drying.

How do I use Winsor & Newton Galeria Extender?

An incredibly versatile medium, in addition to mixing with acrylic colour, Galeria Extender may be used to thin paint, clean the brush, or applied directly to large areas of canvas, to better facilitate blending.

Can you explain some of the terms used when painting with Acrylic Mediums?

Click here for a glossary of Acrylic painting terms, including the different types of medium.

Who are Winsor & Newton?

In 1832, William Winsor and Henry Newton introduced the first moist water colours to the world. Today, Winsor and Newton remain the premier choice for artists, offering a wide variety of fine art supplies including: oil, water colour, acrylic and alkyd paints, pastels, artists' brushes, canvases, papers and portfolios.

Reviews (6)

Works well giving much more working time and makes blending even easier.
Still practicing with this so far so good
Amazingly extends paint with no decrease in colour saturation. I use it along with extender for multiple washes
Tried this product for the first time. Does what it says on the tin.
Extends paint just that bit further without compromising quality of colour as long as you don’t use too much obviously.

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