EWI to lower flat roof [Version ID #46]

Author details

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Detail summary

Detail of EWI junction with an existing flat or sloping roof projecting form an external wall below the main roof of a building.

Technical description

Section detail. EWI to external wall at junction with projecting/lower roof.

- Junction between woodfibre insulation layer and Insulation suitable for splash zone, cut to slope of lower/projecting roof.

- For use where existing flashing to be retained on roof. EWI to roof with new flashing installed at joint of insulation to new roof.

- Appropriate air tightness work to be carried out on ceiling below existing roof.

Parts list

No parts have been included in this revision of the detail.


  1. Admin - 2015-04-29 12:06:55

    EW01 parts list contact details updated. DWG uploded. Technical description amended to remove references to "perimeter insulation"

  2. Admin - 2015-04-29 12:04:28

    EW01 parts list contact details updated. DWG uploded.

  3. Admin - 2015-03-27 16:33:38

    Preview image and .pdf file updated.

  4. Admin - 2015-03-24 12:29:28

    General re-formatting. Introduction revised and expanded. Technical description expanded with Approved document links and installation sequence. Parts link suppliers links added. Damp proof membrane added to parts list.

  5. Admin - 2015-03-13 11:38:38

    Suggested sequence updated. Introduction updated.

  6. Admin - 2015-03-13 11:37:22

    Suggested sequence updated.

  7. Admin - 2015-03-13 11:36:15

    Introduction and technical spec. updated and revised. Parts list added.

  8. Admin - 2015-02-27 16:30:10 [Displayed version]

    Version 1

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