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CWCT publishes standards for building envelopes. The table below summarises the current and earlier Standards along with their dates of currency:

Curtain walling Ventilated rainscreen walls Slope glazing Guide to good practice for facades
Standard for curtain walling, First edition, Published January 1993. Superseded August 1996. Standard for ventilated rainscreen walls, First edition, Published January 1999. Superseded March 2006. Standard for slope glazing systems, First edition, Published July 1998. Superseded March 2006. Guide to good practice for facades, First edition, Published January 1993. Superseded August 1996.
Standard for curtain walling, Second edition, Published August 1996. Superseded March 2006.   Advice on selection of overhead glazing not superseded Guide to good practice for facades, Second edition, Published August 1996. Partially superseded April 2006.
Standard for sytemised building envelopes, Published April 2006. Standard for sytemised building envelopes, Published April 2006#.
#  Standard for systemised building envelopes covers access, workmanship, quality and maintenance. The remaining parts of the Guide to good practice may be used but note that they were published in 1996 and are no longer maintained. They may be viewed here.
N.B.  The dates of publication given above are not the same as the copyright dates printed in the documents.

The following Technical Updates have also been issued:

TU1 # February 2000 Dynamic watertightness tests
TU2 February 2000 Air and water testing with a site cabinet
TU3 # June 2000 Condensation on glazing frames
TU4 $ December 2000 Use of glass overhead
TU5 % March 2002 Building Regulations Approved Document L2 (England and Wales) - showing compliance of curtain walls
TU6 August 2002 Dynamic watertigthness testing of slope glazing
TU7 August 2002 Buckling of curtain wall mullions
TU8 # March 2003 CwCT Standards and European standards
TU9 % February 2004 Specification and verification of thermal performance for Part L2 of the Building Regulations
TU10 December 2003 Use of glass overhead
 
TU11 March 2008 Acceptable water leakage
 
TU12 April 2008 Redundancy of fixings
 
TU13 March 2008 Measurement of displacement
 
TU14 July 2009 Load combinations
 
TU15 November 2010 Replacement of British Structural design codes by Eurocodes
 
# Superseded by Standard for systemised building envelopes
$ Superseded by TU10
% Obsolete following publication of Part L 2006

Technical updates are available in the Cladding Forum or from CWCT.

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