Technical Updates

CWCT members may download the technical updates by visiting The Cladding Forum

Non-members who have purchased the CWCT Standard for systemised building envelopes, 2006, have been sent the relevant updates and will continue to receive updates as they are released.

Technical updates are modifications to CWCT Standards and guidance which should always be read in conjunction with the Technical publications.

These publications are intended for use only by appropriately qualified designers, specifiers and others (with relevant experience) in each case having regard to the particular circumstances and requirements of each case, and exercising professional judgement including the reasonable skill and care to be expected or a professional of the relevant discipline, in that context.

CWCT accepts no duty of care, obligation or liability, whatsoever, to its members or others, in relation to the use of these publications for any purpose.

Number Date Title
TU25 March 2023
Pressure equalisation of open jointed rainscreen
TU24 July 2020 Site Hose Testing
TU23 September 2017 TN67 Safety and fragility of glazed roofing: testing and assessment
TU22 August 2015 Displacement at supports
TU21 April 2015 Dynamic watertightness test
TU20 March 2015 Structural calculations – CE marking of curtain walling
TU19 August 2014 Safety and fragility of roof glazing
TU18 March 2014 Allowable deflections - distributed with Standard for systemised building envelopes, 2006
TU17 October 2011 Calibration of test chamber for air leakage - from November 2011, distributed with Standard for systemised buildings envelopes, 2006
TU16 January 2011 Response to Approved Document L, 2010
TU15 November 2010 Replacement of British Structural design codes by Eurocodes -from November 2011, distributed with Standard for systemised buildings envelopes, 2006
TU14 July 2009 Load combinations - from November 2011, distributed with Standard for systemised buildings envelopes, 2006
TU13 March 2008 Measurement of displacement - from November 2011, distributed with Standard for systemised buildings envelopes, 2006
TU12 April 2008 Redundancy of fixings -from November 2011, distributed with Standard for systemised buildings envelopes, 2006
TU11 March 2008 Acceptable water leakage - from November 2011, distributed with Standard for systemised buildings envelopes, 2006
TU10 December 2003 Use of glass overhead - superseded by Technical Note 68
TU09 February 2004 Specification and verification of thermal performance for Part L2 of the Building Regulations - superseded by Revision of Part L
TU08 March 2003 CWCT Standards and European Standards - superseded by Standard for systemised building envelopes, 2006
TU07 August 2002 Buckling of curtain wall mullions
TU06 August 2002 Dynamic watertightness testing of slope glazing - superseded by Standard for systemised building envelopes, 2006
TU05 March 2002 Building Regulations Approved Document L2 (England and Wales) - showing compliance of curtain walls - superseded by Revision of Part L
TU04 December 2000 Use of glass overhead - superseded by TU10
TU03 June 2000 Condensation on glazing frames - superseded by Standard for systemised building envelopes, 2006
TU02 February 2000 Air and water testing with a site cabinet
TU01 February 2000 Dynamic watertightness tests - superseded by Standard for systemised building envelopes, 2006