Internal Structural Framing System - StrongBak™

The most up to date Structural Framing System available

  • APL StrongBak
  • APL StrongBak
  • APL StrongBak
  • APL StrongBak
  • APL StrongBak

StrongBak™ is the most up to date SFS (Structural Framing System) available. Based upon Kassett construction principles that have been popular in mainland Europe for over 30 years, StrongBak™ combines with the proven APL Tritherm thermally broken spacer system to take MMC (Modern Method of Construction) to the highest levels.

StrongBak™ can be installed either to the face of, or between columns. As the main structural wall elements are 'offsite manufacture' design, procurement and installation of the waterproof structural wall is extremely quick. Excellent structural, thermal, acoustic and fire performance is provided by the system, which is suitable for all building types and compatible with all cladding materials. The StrongBak™ system is extremely cost effective, being normally between 30%-40% more economic than a standard stick form SFS type assembled framing system, as well as being much quicker to install.

Key Benefits

  • Capable of spanning up to 10m clear
  • 30-40% more economical than other SFS systems
  • At least twice as quick to install as 'stick' systems
  • Integrated structural trimming system for easy construction of openings
  • Complete 'through wall design'™ and construction responsibility
  • Very low U Values and air tightness are standard
  • Permanent edge protection built in
  • Subject to loadings/exposure, the system can carry external facings/assemblies including metal panels, terracotta tiles, render and stone cladding types.


SK090, SK010, SK201, SK301, SK451, SK601, SK801, SK900.

Download more information

Click here to download our StrongBak brochure.

StrongBak™ Constructions

External terracotta

External facing brickwork

External render systems

External metal profile

External timber rainscreen

External metal rainscreen

Through-Wall Engineering™

Architectural Profiles Limited, designers and manufacturers of structural systems and cladding options for the building envelope, have introduced their 'Through-Wall Engineering'™ with 'full responsibility' for the system design.

Through-Wall Engineering™ brings together two other ground breaking APL structural systems, StrongBak™ Structural Wall Framing System and APL Energi System™ for roofs and walls, which together provide a system which are proven to be the fastest route to building closure and air seal with one of the most energy efficient envelope constructions and probably the most cost efficient as well – and one which leaves the architect/designer with only the inner skin and the outer cladding to select, both of which APL include in their 'Through-Wall' project design.

APL 'Through-Wall Engineering'™ is a development in direct response to the current construction environment where pressure on budgets and energy efficiency, i.e. the demand for 'more for less', is forcing system designers to rethink conventional construction methodology and come up with simpler and more efficient ideas….. APL 'Through-Wall Engineering'™ is precisely that.

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Architectural Profiles Limited, 53b Crockhamwell Road, Woodley, Reading, Berkshire, RG5 3JP | email: | telephone: 0118 927 2424 | fax: 0118 927 2400

Reg No: 1640903 - Reg Office: 3000a Parkway, Whiteley, Hampshire, PO15 7FX.