Retained window to EWI, with sloping cill [Version ID #222]
Detail summary
EWI detail to an existing window, to be retained, with an existing sloping cill. This detail allows for the profile of the sloping cill to be retained whilst improving the thermally efficiency of the envelope by allowing insulation to be carried up to the window frame, in instances where the original window jamb is reduced in depth.
Technical description
Section detail. EWI to existing retained window, sloping cill profile retained.
REFERENCE SPECIFICATION:
Where existing position of windows is to be retained when EWI is installed, window reveals must be insulated to prevent cold bridge. Phenolic foam to be used in foam based EWI systems or in woodfibre systems where existing window jamb and head is too narrow for standard 40mm woodfibre reveal boards.
Care should be taken during the installation to ensure the continuity of insulation and air-tightness at the junction between window, existing wall and external wall insulation.
Parts list
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EWI (Woodfibre) System With Rendered Finish [EW01]
For use on solid and hard to treat cavity walls. 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
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Single-sided air seal tape [DP09]
Tape for junctions critical to air-tightness. 60mm (typical). \ Accessories: ORCON F sealant and TESCON PRIMER RP (for use on rough/old surfaces to assist adhesion)
Pro Clima \ http://www.greenbuildingstore.co.uk/page--pro-clima-airtightness-tapes-options.html \ TESCON VANA/ TESCON PROFIL (2 release tapes)
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Insulation to retained window in EWI (Thin-Phenolic) [EW05b]
Phenolic foam where existing window jamb and head too narrow for standard 40mm woodfibre reveal boards.Thickness 20mm. Thermal conductivity: 0.023W/mK. Finish: rendered as adjacent EWI. Render stops required at junction with window head/jamb to manufacturers standard.
Kingspan Insulation Ltd \ http://www.kingspan.com \ reference: Kooltherm® K5 External Wall Board
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External Extended Cill [EW01]
Create extended window sill to bridge between existing window reveal and tiles \ Aluminium cill to manufacturer's standard. \ Pack insulation beneath cill to prevent cold bridge at existing cill reveal and use basecoat to fix as directed by manufacturer.
As window manufacturer.
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New cill tile [EW07]
Existing tiles re-used Replacement tile size: As existing. \ Minimum Headlap: 35 mm. \ Fixing: Fully nailed. \ Features: As existing. \ New tiles to be: Terracotta tile cill (Rosemary)- Double layer, mastic sealed and lapped
Contractors choice.
Revisions
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Admin - 2015-05-01 09:02:03
DWG and pdf file updated to match title as appears on site. Amended from "thin-jamb" to "sloping cill" to avoid errors.
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Admin - 2015-04-29 16:20:44
Insulation below tile added. Amendments made to flashing detail GD01. Codes amended to match drawing. DWG file uploaded. PDF file updated to latest revision.
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Admin - 2015-04-29 16:20:12
Insulation below tile added. Amendments made to flashing detail GD01. Codes amended to match drawing. DWG file uploaded. PDF file updated to latest revision.
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Admin - 2015-04-29 16:19:23
Insulation below tile added. Amendments made to flashing detail GD01. Codes amended to match drawing. DWG file uploaded. PDF file updated to latest revision.
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Admin - 2015-03-30 12:21:29
Preview image and detail pdf updated.
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Admin - 2015-03-25 13:21:11
General re-formatting. Technical description updated and expanded. Parts list updated with suppliers links.
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Admin - 2015-03-13 17:42:15 [Displayed version]
Technical description updated. Parts list updated with codes.
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Admin - 2015-03-10 11:37:47
First version
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For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.
For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.
- Ease of understanding detail: Easy
- Ease of sourcing materials: Easy
- Ease of sourcing skills: Easy
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User name
For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.
For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.
- Ease of understanding detail: Easy
- Ease of sourcing materials: Easy
- Ease of sourcing skills: Easy
- Ease of implementation: Easy
- Overall cost: Low cost
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User name
For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.
For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.
- Ease of understanding detail: Easy
- Ease of sourcing materials: Easy
- Ease of sourcing skills: Easy
- Ease of implementation: Easy
- Overall cost: Low cost
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For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.
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