Black Grit

Black Grit with mineral inclusions. Suitable for use as a mortar addition to add colour or texture.

Key Benefits

  • Ideal for providing colour or texture to a mortar
  • Ideal for mortar matching and replicating a similar aesthetic or texture to that of coal inclusions
  • Available in two sizes



5% discount on orders over £500 (Excluding Vat & Delivery). For larger projects visit our pricing page.

Product Variations

Product OptionPrice (Ex VAT)
Medium 0.2 - 1.5mm: £8.79 £10.55 inc VAT
Coarse 1.4 - 2.5mm: £8.76 £10.51 inc VAT
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This is a black grit recycled from a waste stream and produced to British Standards making it more than fit for our purpose as an inclusion in mortars.  We have found it useful in mortar matching when we want to create a textured surface similar to that of coal inclusions. We have trialled crushed coal and charcoal in the past, however; we haven’t found it suitable as it can swell and create stains, this grit is a more than satisfactory alternative, without the negative consequences. Available in two sizes: Medium 0.2-1.5mm and Coarse 1.4-2.5mm.

Used In Conjunction With


Can be used as an mortar addition, adding colour and texture. Should be used as a replacement for sand by volume, so we recommend mixing on site. Browse our extensive range of coarse sands or fine sands for lime mortars, renders and plasters.

We normally advise addition rates to suit the matched mortar, this is often between 2% and 15% but we have found some blends with higher requirements of 35-40%; this is the exception to normal and if you need a high addition rate please contact us as large quantities of a mono-size aggregate can negatively affect mortar performance. This aggregate should be used as a replacement for sand by volume; you will need to reduce your sand content by an equivalent volume.

Each project is unique, always seek professional advice before undertaking a project.

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