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Mortar matching

It’s always a good idea to try to match the existing mortar colour as closely as possible. Various pigments can be added to get basic colours, such as black, red, yellow, brown and orange. However, producing an exact mortar match can be extremely challenging, for example, when the original mortar has faded or become polluted in places, leaving behind an inconsistent colour. Another difficulty is that sand used in mortar could have been excavated from different locations of a quarry, resulting in slight variations in the mortar.

So mortar matching can be a tricky business. The best approach, if the bricks are light, is to use a light mortar. If the bricks are dark, err on the side of a darker mortar. The photos below show examples of mortar that was too light for the wall. In all cases, if the mortar were darker, it would have blended into the shadows.