EWI (below ground) Recessed Plinth and Periscopic Ventilation [Version ID #42]

Author details

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Detail summary

A variation on an EWI detail for periscopic ventilation to a below ground cellar, with a recessed plinth, where EWI stops at ground level over a drainage layer. Applicable where EWI installed to a recessed plinth around external perimeter of building.

Technical description

Section detail. EWI to below ground at building perimeter

- Junction of woodfibre to below EWI: 400 - 200mm external perimeter insulation suitable for below ground use + drainage layer

- Persicopic ventilation to ventilate below ground cellar/basement. Taped and sealed.

- For use with internal suspended timber floor.

Parts list

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


  1. Admin - 2015-04-29 11:50:29

    New contact details added for EW01 and FL03. General formatting changes. DWG uploaded.

  2. Admin - 2015-03-30 12:32:57

    Title amended.

  3. Admin - 2015-03-27 16:30:09

    Preview image and .pdf file updated.

  4. Admin - 2015-03-24 10:48:48

    General re-formatting. Introduction expanded. Technical description updated with additional notes, approved document links and installation sequence. Parts list updated with suppliers codes. Double sided tape added to parts list.

  5. Admin - 2015-03-13 09:46:53

    Introduction, technical description, revised and expanded. Parts list updated.

  6. Admin - 2015-02-27 15:54:44 [Displayed version]

    Version 3- Title updated

  7. Admin - 2015-02-27 15:53:31

    Title updated

  8. Admin - 2015-02-27 15:52:57

    Version 1

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