Heather London Brick 73 mm – London Brick Facing Brick
The Heather London 73 mm brick is part of Forterra’s London Brick family, offering the same warm red-brown tones and visual character as the 65 mm variant — but in a deeper 73 mm format. This makes it ideal for projects where matching existing deeper walls or achieving particular structural depths is necessary, while still maintaining the aesthetic consistency of London Brick.
Finished with a light texture, this variant provides subtle surface relief that softens mortar contrast without overwhelming the façade. As a facing brick, it’s intended for external visible walls, combining appearance with durability. The 73 mm height gives extra flexibility in wall depth or matching older stock London Brick configurations.
In performance terms, Heather London 73 mm shares many characteristics with its 65 mm counterpart. It has a durability rating of F1, water absorption of 23 %, and a compressive strength of 25 N/mm². When installed properly — with correct cavity detailing, flashing, weep holes, and suitable mortar — it delivers long-term resilience in UK weather conditions.
Key Specifications
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Size:215 × 102.5 × 73 mm
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Colour:Red / Red-brown tones
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Texture:Light
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Water Absorption:? 23 %
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Durability:F1 (suitable for typical external facing use)
Frequently Asked Questions
Why choose the 73 mm version over the standard 65 mm Heather London brick?
The extra depth can help with matching existing wall depths, aligning with structural requirements, or improving the bonding pattern in thicker walls — while retaining the same visual look as the 65 mm version.
Will the 73 mm variant weather differently compared to the 65 mm version?
Not significantly. The same clay mix and manufacturing process applies, so the visual and performance behavior is very similar. Any difference will come down to exposure, orientation, and detailing rather than the extra height itself.
Does the 23 % water absorption pose a risk over time in exposed conditions?
A **? 23 % absorption** is relatively high but still within standard limits for London Brick facing products. The key to avoiding damp problems is correct installation — particularly good cavity detail, flashing, weep holes, and compatible mortar — which play a much greater role than the absorption number by itself.
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