EWI Perimeter insulation to footings [Version ID #172]
Detail summary
Perimeter insulation detail for EWI down to below ground level. Detail shows junction between EWI and solid perimeter insulation for below ground use, providing 600mm maximum insulation below the depth of the internal floor level.
Technical description
Section detail. EWI detail junction at ground level. Continuous to avoid thermal bridging.
Perimeter insulation suitable for below ground use and drainage layer. To BS EN 13164
Rainwater drainage: please refer to approved document H, section H3, rainwater drainage for guidance. Drainage layer: Granular infill free from excessive dust, well graded, all pieces less than 75mm in any direction, minimum 10% fines value of 50 kN when tested in a soaked condition to BS 812-111. In one layer no more than one of the following: Crushed rock (other than argillaceous rock) or quarry waste with not more binding material than is required to help hold the stone together/ Crushed concrete, crushed brick or tile, free from plaster, timber and metal. / Crushed non-expansive slag / Gravel or hoggin with not more clay content than is required to bind the material together, and with no large lumps of clay. /Well-burned non-plastic colliery shale. /Natural gravel. /Natural sand.
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
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Woodfibre EWI adhesive [EW01]
Adhesive for use at joint between perimeter/ plinth insulation and external wall insulation.
Unger \ www.unger-diffutherm.de \ Reference: Udi Dispersion Adhesive
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External Wall Insulation (Woodfibre), 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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External Perimeter Floor Insulation [FL03]
Extruded Polystyrene (XPS) to BS EN 13164. Suitable for below ground conditions and for application of render. \ Thickness as external wall insulation. Depth: 600mm below internal floor level or to footings. Tight butt joints. \ Thermal conductivity: 0.033W/m2K. GWP<5.
BASF \ http://www.plasticsportal.net/wa/plasticsEU~en_GB/portal/show/content/literature/styrodur \ Reference: Styrodur 2800C.
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Lightweight Aggregate Insulation bounding layer [FL03]
Lightweight recycled glass aggregate. Thermal Conductivity: 0.08W/mK. \ Depth: As perimeter insulation. \ Width : 200mm
Misapor (technopor or glapor as alternatives) \ www.misapor.ch \ Reference: MISAPOR
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Proprietary Render For External Wall Insulation System [FL03]
To match render to external insulation above
BASF \ To match render to external insulation above.
Revisions
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Admin - 2015-04-29 11:32:33
General formatting changes and DWG file uploaded.
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Admin - 2015-03-27 16:25:51
Preview image and .pdf file updated.
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Admin - 2015-03-23 16:35:09
General re-formatting. Parts list updated with links and suppliers details.
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Admin - 2015-03-12 16:51:53 [Displayed version]
Version 4. Parts list updated
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Admin - 2015-03-12 16:50:25
Version 4. Parts list updated
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Admin - 2015-03-12 16:42:04
Technical description updated and expanded. BS and Approved doc information added. Parts list added.
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Admin - 2015-02-27 15:14:59
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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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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