GypLyner Xternal

A fully tested system that works in conjunction with non-loadbearing Steel Frame System (SFS) to provide a required through-wall performance.

GypLyner Xternal - Lead isometric - T106021

For illustrative purposes only

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A System from Saint-Gobain Interior Solutions
Combining the expertise of leading lightweight construction brands - British Gypsum and Isover. 

GypLyner Xternal combines the technical knowhow, innovation, and expertise of leading lightweight construction brands, British Gypsum and Isover to provide tested fire, acoustic and thermal performances on Hadley non-loadbearing Steel Frame Systems (SFS).

This system has been developed and tested with the same rigour and attention to detail that we apply to all our other products and systems. British Gypsum and Isover products are wrapped around the Hadley steel frame, offering substantiated performances backed up by test evidence and technical know-how. 

Test data for our specifications can only be used with defined Hadley Steel Framing Steel Frame System components. Please contact the specialist Technical Support team at to discuss working with other framing suppliers. For assistance with U-value calculations and insulation requirements, please contact our Technical Support Team. 

Click here to see all available GypLyner Xternal specifications


Key Facts

  • System designed to offer flexible specification options
  • Meet and exceed thermal performance needs through a range of insulation solutions
  • Comprehensive fire and acoustic tested solutions
  • Fire resistance to BS-EN 1364-1:2015 EI 60, 90 and 120 mins (inside to out, outside to in)
  • Up to Rw 56 dB tested sound insulation performance
  • Installation details for junctions, abutments, windows and deflection requirements

Key Considerations

When specifying GypLyner Xternal, you need to satisfy yourself that use of the system meets all relevant national Building Regulations and guidance as well as local, national and other applicable standards relevant for your construction or application, including requirements in relation to fire and applicable height restrictions.

Please refer to the Isover Product Data Sheet, Safety Data Sheet, BBA* and Declaration of Performance which are available at:

Please refer to the British Gypsum Product Data Sheet, Safety Data Sheet and Declaration of Performance which are available at:

The building detail is for illustrative purposes only. It does not constitute advice and should not be relied upon.


Insulation products
Product Name Thickness Range Sizes Lambda
Isover Polterm Max Plus 50-200mm Width 600mm, Length 1200mm See datasheet
Isover Acoustic Partition Roll (APR 1200) 25-100mm Width 2 x 0.6m, Length 9.17 - 20m See datasheet
Isover Steel Frame Infill Batt 50-100mm Width 600mm, Length 1200mm 0.036