IWI to suspended floor, perpendicular joists (accessible from be [Version ID #75]
Detail summary
IWI system detail for insulating a suspended internal floor accessible from underneath in order to retain an existing floor finish. Drawn is a junction detail for the IWI to the edge of the floor and insulation around the joists.
Technical description
Section detail. IWI to internal floor Perimeter to insulated suspended timber floor in perpendicular joists.
Before installation: Remove all timber fixtures: Skirting, Picture Rails, Dado Rails etc. Remove curtain rails. Remove electrical socket/ telephone/cable socket outlets. Re-fix/renew all removed once insulation complete.
Suggested sequence:
Remove wallpaper and plaster if necessary, any fixings and skirting board. Lift floorboards adjacent to wall to allow access to floor void and joists. Stuff joist ends with off cuts of flexible woodfibre insulation. Fix IWI to reach ceiling below. Intelligent membrane and plasterboard with skim continued into floor void. Seal round joists as it penetrates. Fix floorboards and skirting boards and make sure of air-tightness
Parts list
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Internal Wall Insulation System (95mm)
Earthwool Eco batt insulation. Thickness 95mm\ Target u-value: 0.3W/m2k. Thermal conductivity: 0.033W/m2k/ 0.130W/mk. GWP<5. \ Fixing: In accordance with manufacturer's recommendations. Supports: EcoStuds - XPS and OSB uprights.
Knauf \ ThermoShell Internal Wall Insulation System
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Intelligent membrane- Vapour Control Layer
Intelligent breather membrane. \ Fixing: Laps And Edges: Sealed with vapour-tight adhesive tape. At junctions with party/patition walls, lap under insulated plasterboard. At floor and ceiling junctions ensure is appropriately sealed.
Pro-clima \ Intello membrane
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Draughtex Neoprene Strips
All timber ground floors: draught-proof and seal all timber floors to ensure no air-leaks. Draughtex neoprene strips or timber fillet/ mastic seal between skirting and floor. \ Skirtings and Wall junctions: Seal all junctions and repair any cracks in plaster to ensure no air-leaks. Standard decorators caulk between skirting and wall.
Draughtex \ www.draughtex.co.uk \ Draughtex Neoprene Strips
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Double-sided air seal tape
Tape for junctions critical to air-tightness. 85mm (typical). \ Accesssories: 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 \ Contega SL
Revisions
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Admin - 2015-04-30 09:42:00
General formatting changes. Contact detail for parts list updated. DWG file uploaded.
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Admin - 2015-03-30 11:55:29
Preview image and detail pdf updated.
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Admin - 2015-03-29 10:51:08
Duplicate insulated support studs removed in parts list.
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Admin - 2015-03-26 17:13:21
General formatting. Introduction and technical description updated. Parts list updated with suppliers codes.
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Admin - 2015-03-16 15:16:46
Introduction updated and technical description revised and BS and approved docs added. Parts list updated with relevant codes.
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Admin - 2015-03-03 16:37:13 [Displayed version]
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
- 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
-
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.
- 50% of users found it easy to source skills for this detail.
- 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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