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GBE Compare H11 Translucent Cladding G#983 N#1004

By 11 June 2014October 9th, 2019Uncategorized


GBE Compare H11 Translucent Cladding

GBE Compare H11 Translucent Cladding

GBE COMPARE Product Group Comparison Conclusions

  • PASS establishes the Key Performance Indicators KPIs, Environmental Performance Indicators EPIs and Social Performance Indicators SPIs for each product group.
  • PASS places Energy & CO2 as the EPI
  • PASS collects data on as many products as we can find easily; applies any calculations necessary to determine comparable data.
  • PASS then sorts the results in each EPI, KPI and SPI to determine average or normal performance and determines which are above and below the average performance.
  • PASS then compares individual products to determine where and how they are better or worse than the average or normal.
  • PASS encourage manufacturers to bring their latest product data to improve the collected data.

H11 Curtian Walling Translucent Glazing

On this occasion PASS compared:

  • 2 cladding systems by the same manufacturer

PASS took manufacturer or reviewer declared data:

Average or Normal Performance:

On this occasion the averages determined were:

  • ………

GreenWash Alert:

  • One piece of effective greenwash is that …….
  • In the absence of comparable data manufacturers can be optimistic in their marketing and sales talk.
  • There is some considerable GreenWash going on about some below average products.
  • In the absence of knowledge specifiers can be fooled by the GreenWash.


  • PASS encourage manufacturers to bring new or better products to drive down energy and CO2 increase sequestered carbon, improve emissions, improve resource efficiency.

Follow up actions:

  • Manufacturer’s products that fall below average EPIs are being removed from GreenSpecINDEX
  • Manufacturers of best performance products will be encouraged to be in GreenSpecINDEX
  • Manufacturers are encouraged to bring new or better modes forward for PASS GROUP COMPARISON and to show in GreenSpecINDEX

Robust Specification:

  • When one manufacturer produces many products or many variants of one product, whose performance varies enormously from variant to variant, it is essential that the exact model name, reference prefix and reference suffix is in the contract specification.
  • NBS would argue that is enough, GBE argue that the performance characteristics, the reasons for choosing the product and the model, are also included, so there is a basis for checking deliveries on site and a basis for comparison in the event of substitution; all of this on site or at the point of substitution without reference to other documents.

Performance Standards:

“Unless workmanship and performance are defined as part of the Contract Documents then any control over the end result becomes entirely speculative.”

Neil Pepperell MD © RIBA Indemnity Research Ltd.

Performance Certificates

“If … test certificates are claimed, make sure they are current and relate to the proposed product, not another in the range”

Liability alert No.  17

A03 16th June 2013

© GBE NGS ASWS Brian Murphy aka BrianSpecMan
16th June 2013 – 27th December 2018

GBE Compare H11 Translucent Cladding


Fig. 1 GreenSpecLogo


Fig. 2 GreenSpecPASS logo

PASS H11 Kalwall+Lumira A00 BRM 2013 png

Fig. 3 Example H11 PASS Product Assessment & Endorsement

Fig. 4 Example H11 Group Comparison

Fig. 5 Example H11 Group Comparison Conclusions

© GBE NGS ASWS Brian Murphy aka BrianSpecMan
16th June 2013 – 27th December 2018

GBE Compare H11 Translucent Cladding
See Also:

GreenSpecINDEX Products


  • H11 Curtain Walling: Translucent Cladding Group Comparison Schedule
  • H11 Curtain Walling: Translucent Cladding Group Comparison Conclusions
  • To be added to this list contact BrianSpecMan


  • H11 Curtain Walling: Translucent Cladding: Structura UK’s Kalwall+ Lumira


  • CO2
  • Environmental Performance Indicators (EPI)
  • EPI
  • GreenSpec
  • GreenSpecINDEX
  • GreenSpecPASS
  • GreenWash
  • KPI
  • Key Performance Indicators (KPI)
  • Market Transformation Programme (MTP)
  • MTP
  • National Building Specification (NBS)
  • NBS
  • Or Equivalent
  • SPI
  • Social Performance Indicators (SPI)


  • H11 Curtain Walling


  • External Walling Curtain Walling Translucent Cladding



© GBE NGS ASWS Brian Murphy aka BrianSpecMan
16th June 2013 – 27th December 2018

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