EWI with new window (Plan) [Version ID #122]
Detail summary
New window fitted into EWI with a timber frame for mounting of window into external wall insulation. Used where single brick reveal means original window was originally sat behind and larger than structural opening in outer face of existing masonry wall. This detail is designed to reduce thermal bridging and improve air-tightness whilst spreading structural load of new window and maximising glazed area. The timber box also acts as self-finished internal reveal. (May be painted/ varnished as required).
Technical description
Plan detail. EWI to new replacement window, on box into former window location. New triple glazed window to replace existing.
Windows and window boxes should be fitted prior to installation of external wall insulation wherever possible. Ideally installed from outside, with insulation fitted tight up to box and appropriate air-tightness work undertaken as shown on detail drawings. Where this is not possible, windows and boxes can be fitted from inside, with temporary boxing acting as place-holder within the insulation until installation can take place.
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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New Timber frame, triple-glazed windows
Eco-Contract Ultra Outward Opening Casement Windows.\ Thermal Performance (overall u-value) : 0.79W/m2K.\ Air-tight.
Size: As schematic.\ Opening Pattern/ Configuration : As existing (unless otherwise stated on schematic).\ Sash/Frame Material: FSC 100% Redwood.\ Drip Rail : Aluminium. \ Finish - Interior: Factory finished paint/varnish system.\ Finish - Exterior: Factory finished paint/varnish system. \ Glazing Unit : Triple, Argon Fill, 44mm. \ Glazing Type: as standard triple glazed unless stated: Light transmission : 72%. \ Solar factor (g): 52%. \ Handle Type: Manufacturer's standard, factory fitted. \ Security: Secured by Design.\ Accessories: Egress Hinges and Child Safety Restrictors. \ Guarantees: Manufacturer's standard.
Manufacturer: Green Building Store. \ www.greenbuildingstore.co.uk \ Tel: +44 (0)1484 461705. \ Reference: Eco-Contract Ultra Outward Opening Casement Windows
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External Wall Insulation (Woodfibre) System With Rendered Finish
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
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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Self-finished Softwood Box to Mount Window into Depth of EWI
To fit existing structural opening. Box to be constructed to same outside dimension as window opening. Window box. \ Depth as detail drawing. Inner edge of reveal to protrude 20mm inside the room, beyond the existing plaster face. \ Species : European Redwood. \ Section Sizes: As detail drawing. \ Adhesive to contractor’s specification. Mechanically pre-fixed and glued to window frame to existing masonry : Window reveals to be fixed back to outer leaf of masonry with frame fixings countersunk and plugged, at between 450mm - 600mm centres to suit window size. \ Certification : All timber to be FSC certified.
Contractors choice
Revisions
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Admin - 2015-04-29 15:19:48
DWG file uploaded.
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Admin - 2015-03-27 17:38:29
Preview image and .pdf file updated.
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Admin - 2015-03-25 10:42:12
General re-formatting. Introduction text revised. Technical description updated with links to approved docs and additional specification notes. Parts list updated with suppliers links.
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Admin - 2015-03-25 10:41:32
General re-formatting. Introduction text revised. Technical description updated with links to approved docs and additional specification notes. Parts list updated with suppliers links.
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Admin - 2015-03-25 10:41:07
General re-formatting. Introduction text revised. Technical description updated with links to approved docs and additional specification notes. Parts list updated with suppliers links.
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Admin - 2015-03-13 16:23:39
Title updated to match drawing. Technical description added and parts list updated with codes.
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Admin - 2015-03-10 10:43:12
Version 3- title updated
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Admin - 2015-03-10 10:10:52
Version 3 - summary updated
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Admin - 2015-03-10 09:42:02 [Displayed version]
Version 1
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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
- 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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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
Feedback summary
- 80% of users found this detail easy to implement.
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- 60% of users found this detail hard to understand.
- 100% of users found the overall cost for this detail to be low.
- 90% of users found materials for this detail easy to source.
Discussion
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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