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).


Product Range:
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
density 2100kG/m3.
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.
Constituent Materials:
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
supply.
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