Page 3 - Haddonstone

When correctly designed, manufactured and Contents
installed, cast stone can provide a durable, long
lasting product which can match the appearance 1.0 INTRODUCTION
of many quarried stone profiles and finishes.
2.0 MANUFACTURE
The material is recognised in NHBC Standards
and the use of features made from cast stone 2.1 Semi Dry Production
should comply with the latest version of BS1217 2.2 Wet Cast Production
or, better still, the higher standard adopted by 2.3 Fibre Reinforced Cast Stone Production
UKCSA members. 2.4 Guide to Manufacturing Method Properties
2.5 Finishing Methods
While supporting BS1217, the UKCSA recognises
that a key issue for cast stone is the material’s 3.0 USES & APPLICATIONS
durability and weathering characteristics. As the
result of research carried out by the University 3.1 Comparison of Properties
of Dundee, the UKCSA has produced its own
standard, with a mix design of 35 MPa. This is 4.0 DESIGN & DETAILING
at least 40% above the British Standard and
ensures strong cast stone with outstanding 4.1 Structural Considerations
durability and site handling. The UKCSA standard 4.2 Building Movement
includes a rigorous regime of product testing and 4.3 Prevention of Moisture Penetration
third party verification, the results of which must 4.4 Position of Water Bars
be logged with UKCSA. 4.5 Cold Bridging and Insulation
4.6 Prevention and Staining
This latest edition of the Technical Manual will be 4.7 Design of the Element
a worthwhile and long-lasting aid to architects, 4.8 Reinforcement
builders and others who are new to cast stone, 4.9 Lifting
and will be a very useful prompt for even the most
experienced of designers. This publication will 5.0 SUPPLY & SITE PRACTICE
provide valuable guidance to all those wishing to
capitalise on the attractive finishes, versatility and 5.1 Transportation
longevity of cast stone and covers all aspects of 5.2 Site Storage
cast stone design, manufacture and use. 5.3 Site Handling

The NHBC is pleased to see this new edition of 6.0 INSTALLATION
the ‘Technical Manual for Cast Stone.’
6.1 Protecting During Construction
Peter Crane, 6.2 Laying
Head of Technical Standards 6.3 Bedding and Jointing
6.4 Cutting

6.5 Mortars
6.6 Fixings
The National House-Building Council
7.0 AFTERCARE & SURFACE

7.1 Prevention
7.2 Cleaning
7.3 Repair
7.4 Weathering
7.5 Efflorescence

8.0 UKCSA STANDARD

8.1 Scope
8.2 Definition
8.3 Materials
8.4 Requirements for Units
8.5 Sampling

9.0 APPENDICES & GLOSSARY

Appendix 1 Flatness of Plane
Appendix 2 Capilliary Absorption Test
Appendix 3 The UKCSA Specification
Appendix 4 British Standard References
Appendix 5 Acceptability Guidance
Glossary