SSDTB: Sliding / Stacking Thermal Break Double Glazed Door

Envirotech Façade Solutions has started our design process with a blank sheet. Instead of short cutting the process and utilising the traditional public works sliding door designs from the 1980’s, EFS has designed a high performance commercial sliding door to suit todays’ requirements, standards, codes and architectural trends.

The design features combined with the ability to accommodate 200kg sash weights, translate to designers and fabricators the ability to glaze thicker and therefore larger pieces of energy efficient glass than many of the other suites currently on offer to the market.

From a performance perspective, these features mean that designers need not compromise their designs in order to achieve performance requirements for thermal, acoustic, structural and water ratings.

The EFS SSDTB sliding & stacking thermal break door system is complimented by its ability to seamlessly integrate with all of EFS’ framing systems.

Please contact our friendly sales or technical staff for help with your design requirements and if required, we can help customise a solution for your next project.


  • Sliding Doors to be manufactured using EFS (Envirotech Facade Solutions) SSD sliding & stacking thermal break door system.
  • Windows and Doors to comply with the latest edition of AS 2047 including the performance requirements therein.
  • Frame & mullion strengths to comply with the certifying engineers computations.
  • Glass to be selected, glazed and installed to ensure compliance with AS1288.
  • Glass performance to be determined by Section J of the BCA, WERS, or as specified.



New Features

  • Thermal break for improved thermal performance
  • 60mm sight line framing
  • Consistent sash face widths – 60mm for simple clean appearance
  • Double glazed sashes
  • Sash rail utilized to match high performance door rollers, suits 200Kg sash weight
  • Option for Anti-lift roller at sash head
  • Optional Stiles to suit mortice lock application
  • Glazing of 6mm up to 28.76mm Glass thickness
  • Minimum 9mm edge cover conforming with AS1288
  • 2 assembly screw options to minimize twist under operating loads
  • Channel glazing wedges – Santoprene or EPDM glazing alternatives
  • Adapts simply to shopfront sidelight framing
  • New design registered low profile 2-part sill with replaceable tracks

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