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Patchy colour in epoxy grout can put a damper on your tiling project. This guide explains what causes uneven colour and offers practical tips to help you achieve that smooth, consistent grout finish.
What Causes Patchy Epoxy Grout?
Patchiness appears most often when pigments in the grout are not mixed thoroughly. Even minor inconsistencies during blending can result in streaky or uneven colour across joints. Poorly combined resin and hardener may also contribute to patchy looks when the grout cures.
Easy Tips for Consistent Grout Colour
- Mix thoroughly: Take extra care to blend pigment evenly into the resin before adding the hardener.
- Pick quality pigments: Choose highly concentrated options such as the Colourfun liquid colourant which is specifically made to disperse evenly in epoxy resin.
- Stick to recommended ratios: Avoid adding excess pigment—usually 1-5% is ideal for best results and a uniform appearance.
Always scrape the sides and bottom of your mixing container to ensure complete blending at every step.
When This Matters Most
A flawless, even grout finish is especially important for feature areas like splashbacks, shower walls, or decorative floors. In these settings, any colour inconsistencies stand out, so careful mixing makes all the difference.
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With the right products and mixing technique, patchy epoxy grout can be avoided for good. If you’re looking for more advice on tinting your grout the right way, visit our main guide on how to colour epoxy grout.