BSI have published a new standard for discontinuous roofing and cladding. It is BSEN 12326-1:2004 Slate and stone products for discontinuous roofing and cladding Product specification.

ISBN 0 580 44150 4. Price £100 (£50 for subscribers). You can order copies from BSI customer services. Tel: 020 8996 9001. Email: (see below).