October 2026 – Retro Ecowall Details Part 2

This is the second set of Retro Ecowall® details produced in collaboration with Ecological Building Systems, following on from Part 1 which covered the core system build-up and junctions at roof eaves, intermediate floors, and wall intersections.

This set addresses the remaining junctions that are critical to a complete and airtight installation: window and door reveals, secondary glazing, ground floor interfaces across a range of floor types and conditions, service penetrations, and the junction with an existing timber stud partition. Together, the two sets provide comprehensive detailing coverage for the Retro Ecowall® system across the full range of conditions likely to be encountered in the retrofit of a solid brick or stone dwelling.

10 Oct26 REW12–REW23 Retro Ecowall Details Part 2
Details included in this set:

  • Retro Ecowall – window jamb – plan
  • Retro Ecowall – window head & cill – section
  • Retro Ecowall – secondary glazing – section
  • Retro Ecowall – suspended ground floor – section
  • Retro Ecowall – new solid ground floor with insulation below slab – section
  • Retro Ecowall – new solid ground floor with Diathonite thermostep – section
  • Retro Ecowall – existing solid ground floor upgrade with Diathonite thermostep – section
  • Retro Ecowall – door head and threshold – section
  • Retro Ecowall – door jamb – plan
  • Retro Ecowall – service penetrations – section
  • Retro Ecowall – external ground 1m above with Watstop tanking – section
  • Retro Ecowall – timber stud partition to external wall junction – plan

New Details

REW12 – Retro Ecowall – Window Jamb – Plan

REW13 – Retro Ecowall – Window Head & Cill – Section

REW14 – Retro Ecowall – Secondary Glazing – Section

REW15 – Retro Ecowall – Suspended Ground Floor – Section

REW16 – Retro Ecowall – New Solid Ground Floor With Insulation Below Slab – Section

REW17 – Retro Ecowall – New Solid Ground Floor With Diathonite Thermostep – Section

REW18 – Retro Ecowall – Existing Solid Ground Floor Upgrade With Diathonite Thermostep – Section

REW19 – Retro Ecowall – Door Head and Threshold – Section

REW20 – Retro Ecowall – Door Jamb – Plan

REW21 – Retro Ecowall – Service Penetrations – Section

REW22 – Retro Ecowall – External Ground 1M Above With Watstop Tanking – Section

REW23 – Retro Ecowall – Timber Stud Partition to External Wall Junction – Plan

Ecological Building Systems

These details have been produced in collaboration with Ecological Building Systems.

Ecological Building Systems Logo Square

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Learn more about or download the Ecological Building Systems details from our library. Please log in or sign up to download the files.

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