Blocks & Bricks
Colas Ltd manufactures products that are compliant with the
requirements of BS EN 771-3 under a British Standards Institute
Kitemark Licence (certificate reference KM41121). Our in-house
sampling and testing occurs at a frequency 0.02% of the daily
manufacture for a given product and test records are available for
inspection, by request.
Thermal Conductivity @ 3% moisture content on bulk dry density
(1800kg) =0.87W/ (mk).
Solid blocks: Height 215mm, Length 440mm and available in the
following standard widths 100mm and 140mm, with average densities
of 1800 and 2020kG/m3 respectively.
Midi blocks: Height 215mm, Length 290mm, Width 140mm
Cellular blocks: Height 215mm, Length 440mm, Width 140mm.
Average void space 25%. Average density 1407kG/m3.
Bricks: Height 65mm, Length 215mm and Width 100mm. Average
Strength and Finish:
The minimum crushing strength supplied is 7N/mm². However, we
are able to supply 10, 14 and 21 N/mm² to order.
All products are supplied as a common finish. The Company can
also manufacture (to order) its products with a fair face finish,
suitable for painting without rendering.
Carboniferous limestone aggregates and sand compliant with the
requirements of BS EN 12620 and cement compliant with the
requirements of BS EN 197-1 2000. Water is drawn from the public
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