Pigments

Suitable for both internal and external applications. Suitable for various applications, including adding colour to limewash, lime mortars, lime render, lime plasters and concrete.

For mortar applications, ensure pigments are measured carefully before mixing to reduce variation from batch to batch. Gradually add pigments to your mix and carefully disperse them to help achieve a consistent and uniform colour. Avoid leaving clumps of pigment within the mix. We would generally recommend pre-blending the pigment with some lime using a forced action mixer like a plastering whisk, or mixing it with hot water to aid in dispersion before adding it into the mixer.

Variations in the sand and lime content from volumetric mixing can change the colour of the mortar, so keep this in mind when choosing your materials.

The addition of pigment can impact the strength of the mortar. In general, we typically advise a limit of 10kg per tonne of lime mortar.

For limewash applications, mix the pigment with a small amount of clean potable water to form a paste or slurry. This preparatory step assists with fully saturating the pigment and preventing dry clumps that can cause heavily pigmented spots and an uneven finish. The addition of pigment will vary depending on several factors, including the pigment used and the colour you aim to achieve. Generally, we recommend a maximum ratio of 20 parts limewash to 1 part pigment paste. For guidance on applying limewash, see our guide How to Apply Limewash Successfully. For those unfamiliar with mixing limewash and pigments or looking for a ready-to-use option, browse our range of premixed limewash.

For all applications, determining the right amount of pigment for a desired colour is part science, part art. Combining best practices, experience, and patience will assist you in achieving your ideal shade.

See the Technical Data and Documentation section for detailed product information, application guidance, and datasheets. Always review any available documents before use. Each project is unique, always seek professional advice before undertaking a project.