Black Grit

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

Available in three sizes, 0.1-0.2mm, 0.2-1.5mm and 1.4-2.5mm.

Pricing

£6.83£8.13

Clear

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

Product Variations

Product OptionPrice (Ex VAT)
Superfine: £6.83 Ex VAT. (£8.20 Inc VAT.)
Fine: £8.13 Ex VAT. (£9.76 Inc VAT.)
Regular: £8.00 Ex VAT. (£9.60 Inc VAT.)
SKU: N/A.
Weight
N/A
Categories: .
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Description

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 trialed 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.

The finest grade of 0.1-0.2mm is not fine enough to “colour” or darken a mortar, at high addition rates it will appear that the mortar is slightly darker from a distance but as you get closer it becomes apparent that it is a textured surface and the “normal” mortar colour is very obvious.

 


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.

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Application

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.