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Certificate 98/3528 Dufaylite Developments Limited. Clayboard Mark 2 KN30 void system. 4th issue

Publication Year

2005

Document Status

Withdrawn

Abstract

Used in order to limit the pressure exerted on the soffit of in-situ, reinforced concrete ground beams and suspended concrete floors caused by expansion of clay soils (clay heave) or ground recovery. The product must not be used at depths greater than 2m or in locations below the water table.

Document History

Superseded by the second issue, dated 26th September 2017.

Publisher Information

British Board of Agrément

The British Board of Agrément have been providing authoritative and independent information on the performance of building products for over 40 years. The certificates they produce contain data on durability, installation and compliance with Building Regulations.

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