Roof insulation at increased depth rafters [Version ID #88]
Detail summary
Insulation detail where existing rafters are extended to allow greater depth of insulation. Use only where suitable vapour-permeable roofing membrane is present (check brand and sd value).
Technical description
Section detail. Roof insulation to existing room-in-roof with no existing sarking or vapour permeable membrane present.
Removal of existing ceiling and finishes (set aside for re-use), remove existing light fittings and set aside for re-use. Remove any existing timber mouldings. Check roofing membrane before installation of insulation.
Parts list
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Increased depth to rafters
C16 strength class, FSC certified timber to increase existing rafters to 250mm. Fixed to existing rafters at existing centres.
Contractors choice.
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Insulation Boards Or Batts Fitted Between Rafters
Woodfibre batts, friction fitted between rafters. \ Thickness 250mm. Width to suit rafter spacing. \ Thermal conductivity: 0.40W/m2K. GWP 0.
Unger \ www.unger-diffutherm.de \ Reference: UdiFLEX
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Single layer plasterboard backings (nail fix) and plaster
Vapour check plasterboard 12.5mm thickness tapered edge. Joints taped. \ With 2-3mm gypsum plaster coat over applied in single coat, smooth finish
Contractors choice
Revisions
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Admin - 2015-04-30 10:55:29
DWG uploaded. General formatting work to parts list.
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Admin - 2015-03-30 11:40:44
Preview image and detail pdf updated. Title amended to match drawing.
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Admin - 2015-03-28 18:04:39
Intelligent membrane amended in parts list.
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Admin - 2015-03-19 13:28:25
Version 2 -Title updated. Errors is introduction removed.
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Admin - 2015-03-19 13:27:48
Title updated. Errors is introduction removed.
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Admin - 2015-03-18 10:36:36
Version 2- Introduction expanded with additional information. Technical description expanded with BS codeas an approved doc links. Parts list codes and manufacturers links added.
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Admin - 2015-03-04 14:26:13
Version 2- preview image revised.
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Admin - 2015-03-04 14:20:27 [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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