EWI to pitched roof. Flashing to verge over EWI system. [Version ID #115]

Author details

Original Author:Admin Organisation:

Detail summary

EWI up to a pitched roof verge without sufficient depth to cover depth of insulation. Where not possible to extend the existing roof verge over the insulation install new cap flashing at junction between pitched roof and external wall insulation.

Technical description

Section detail. EWI to existing pitched roof verge, with EWI extending beyond. Verge flashing added.

Care should be taken to ensure air-tightness. Seal all service penetrations through EWI and existing wall. Lap and tape all membranes around edges of EWI system.

All insulation to be continuous to avoid thermal bridging.

Preparation of external wall: Remove any existing loose material and prepare in accordance with manufacturer's requirements.

Any alterations to drainage and other fixtures, or work to prepare the substrate, to be agreed with contract administrator prior to work being undertaken. Prior to start on site inspect the form and condition of the structural substrate; institute repairs and/ or additional works necessary to make the substrate suitable to receive EWI system.

Parts list

  • Stainless Steel Profile mini-parapet gutter

    Austenitic alloy grade 1.4301 (304). Thickness: 0.4 mm. Mill finished. Screw fixed over existing fascia board. Existing roof membrane lapped over.

    Contractors choice.

  • External Wall Insulation (Woodfibre) System With Rendered Finish

    Composite woodfibre board. 'UdiTherm SK' back board, 'Diffutherm' NF (T&G, renderable) top board. \ Fixed mechanically to substrate in accordance with manufacturers recommendations. \ Base Coat - levelling on substrate: 90% contact required around edge of boards between board and substrate to prevent thermal bypass. If substrate is very uneven, use base-coat material around edge of board to achieve contact. \ Thermal conductivity: 0.045W/m2K. GWP 0.

    Unger \ www.unger-diffutherm.de \ Reference: UdiFRONT. \ Render: UDI Perl

Revisions

  1. Admin - 2015-05-01 09:20:06

    Title amended to match drawing

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  2. Admin - 2015-04-29 14:43:22

    DWG uploaded. PDF file amended to relevant drawing. Preview image updated.

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  3. Admin - 2015-04-29 14:42:46

    DWG uploaded. PDF file amended to relevant drawing.

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  4. Admin - 2015-03-27 16:59:05

    Preview image and .pdf file updated.

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  5. Admin - 2015-03-24 18:12:05

    General formatting. Introduction expanded. Technical description approved doc links expanded. Notes added. Parts list updated with suppliers links.

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  6. Admin - 2015-03-13 15:39:19

    Title updated to match drawing. Technical description expanded. Parts list updated with codes.

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  7. Admin - 2015-03-06 12:48:50 [Displayed version]

    First version

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