The UKCSA Standard

The UKCSA was closely involved in producing the original British Standard for cast stone (BS1217) in 1997 and its update in 2008. The British Standard covers aspects including strength, water absorption, dimensional tolerances and design considerations.

While supporting BS1217, the UKCSA recognises that the key issue for cast stone is the material's durability and weathering characteristics.

As a result of research carried out by the University of Dundee, the UKCSA has produced its own standard, with a mix design of 35 MPa. This is at least 40% above the basic British Standard and ensures the strongest cast stone available, with outstanding durability and site handling.

It also means being able to predict precisely the performance of cast stone as a structural material. Whether your design details are standard or bespoke, they will be tailored exactly to your specification.

The UKCSA standard includes third party verification, comprising a rigorous regime of product testing - the results of which must be logged with UKCSA - and plant inspections.

To help you specify cast stone correctly, the UK Cast Stone Association (UKCSA) has produce a new generic specification which is available to download UKCSA Specification.

The National House-Builder Council (NHBC) recommends: 'When specifying or using cast stone ensure it is produced to BS1217 or, better still, the higher standard adopted by UKCSA members.'

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