32 33 AJ SPECIFICATION 02.11 GREENHOUSE, MIXED USE DEVELOPMENT LEEDS WEST AND MACHELL ARCHITECTS Selected products Insulated render system WBS External Wall Insulation Render System incorporating 130mm Kingspan Kooltherm K5 External Wall Board Insulation www.wbs-ltd.co.uk www.insulation.kingspan.com Roof insulation Kingspan Insulation Thermataper TT47 Roof membrane Sarnafil G410-12EL membrane. Finish light grey www.sarnafil.com Acoustic flooring to new upper timber floor Regupol 7210C www.regupol.com Acoustic flooring to new concrete floor Regupol 4515 Frame GGBS concrete Acoustic insulation to party walls Isowool Glass Quilt www.isowool.com Floor Slab Insulation Kingspan Thermafloor TF70+65mm screed Acoustic Ceiling System: Lafarge Acoustic MF Ceiling System www.lafargeplasterboard.co.uk Project data Name of Project Greenhouse, Leeds Name of client Citu Main contractor Clegg Construction Quantity surveyor Sum Structural engineer Thomasons Services engineer Woods Environmental Procurement route Design and Build Gross internal floor area 12,623 m 2 Construction cost £12.5 million Start on site December 2008 Completion April 2010 Estimated annual CO 2 emissions for a typical flat 0.5 tonnes Insulation has helped this pioneering mixed-use refurbishment to achieve a 60 per cent increase in overall energy efficiency, using high specification insulation and the latest renewable energy technology. e seven-storey development has been refurbished and extended to provide 172 one, two and three-bedroom eco- apartments, plus office space, transforming the original 1930s Art Deco brick-and- concrete former workers’ hostel. Compared to a standard approach, it is expected to save 169 tonnes of carbon and 3.8m litres of water each year and it has achieved Level 4 of the Code for Sustainable Homes. e thermal performance of all building elements has been considered to create an airtight building envelope with the following U-values: walls, 0.15; windows, 1.32; roof, 0.1; floor, 0.15 W/m 2 K. e existing building was wrapped in a new high-performance insulated skin. e new roof has now achieved a U-value of 0.10 W/m 2 K. A ground source heat pump supplements heating and solar panels provide hot water. Roof wind turbines provide electricity for communal lighting and lifts and water is recycled. Residents can control their energy and CO 2 emissions using the IPTV energy-monitoring system, which allows them to view utility bills and CO 2 output on their televisions. Craig Bolton, architect, West and Machell Architects AJ SPECIFICATION 02.11 1. Office courtyard 2. New entrance facade 3. After 4. Before 5. Archive photo 6. Original entrance facade 7. Courtyard before retrofit 8. Interior before retrofit 9. Courtyard allotment 10. Office 7 6 5 9 8 4 3 2 10 1
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32 33AJ SPECIFICATION 02.11
GREENHOUSE, MIXED USE DEVELOPMENTLEEDSWEST AND MACHELL ARCHITECTS
Selected products
Insulated render system
WBS External Wall Insulation Render System
incorporating 130mm Kingspan Kooltherm K5
External Wall Board Insulation
www.wbs-ltd.co.uk
www.insulation.kingspan.com
Roof insulation
Kingspan Insulation Thermataper TT47
Roof membrane
Sarnafil G410-12EL membrane. Finish light grey
www.sarnafil.com
Acoustic flooring to new upper timber floor
Regupol 7210C
www.regupol.com
Acoustic flooring to new concrete floor
Regupol 4515
Frame
GGBS concrete
Acoustic insulation to party walls
Isowool Glass Quilt
www.isowool.com
Floor Slab Insulation
Kingspan Thermafloor TF70+65mm screed
Acoustic Ceiling System:
Lafarge Acoustic MF Ceiling System
www.lafargeplasterboard.co.uk
Project data
Name of Project Greenhouse, Leeds
Name of client Citu
Main contractor Clegg Construction
Quantity surveyor Sum
Structural engineer Thomasons
Services engineer Woods Environmental
Procurement route Design and Build
Gross internal floor area 12,623 m2
Construction cost £12.5 million
Start on site December 2008
Completion April 2010
Estimated annual CO2 emissions for
a typical flat 0.5 tonnes
Insulation has helped this pioneering mixed-use refurbishment to achieve a 60 per cent increase in overall energy efficiency, using high specification insulation and the latest renewable energy technology.
The seven-storey development has been refurbished and extended to provide 172 one, two and three-bedroom eco-apartments, plus office space, transforming the original 1930s Art Deco brick-and-concrete former workers’ hostel.
Compared to a standard approach, it is expected to save 169 tonnes of carbon and 3.8m litres of water each year and it has achieved Level 4 of the Code for Sustainable Homes.
The thermal performance of all building elements has been considered to create an airtight building envelope with the following U-values: walls, 0.15; windows, 1.32; roof, 0.1; floor, 0.15 W/m2K.
The existing building was wrapped in a new high-performance insulated skin. The new roof has now achieved a U-value of 0.10 W/m2K.
A ground source heat pump supplements heating and solar panels provide hot water. Roof wind turbines provide electricity for communal lighting and lifts and water is recycled. Residents can control their energy and CO2 emissions using the IPTV energy-monitoring system, which allows them to view utility bills and CO2 output on their televisions.
Craig Bolton, architect, West and Machell Architects
AJ SPECIFICATION 02.11
1. Office courtyard2. New entrance
facade 3. After 4. Before 5. Archive photo 6. Original entrance
facade 7. Courtyard before
retrofit 8. Interior before
retrofit 9. Courtyard allotment 10. Office
7
6
5
9
8
4 3 2
10
1
36 AJ SPECIFICATION 02.11
GREENHOUSE, MIXED USE DEVELOPMENTLEEDSWEST AND MACHELL ARCHITECTS
Structural elements taken from Thomasons Drawing L10809/C/106A [Fourth]
Extg wall locations taken fromMetSurveys 20/11/2006 DrawingSUM101_4 revØ
Proportional Colapse structural elements taken from Thomasons Dwg L10809/C/30B [ProgCol]
Existing floor plan of workers’ hostelSite plan
New floor plan
0 5m
31
1
1
5 5
3 4
2
1
1 1
6 6
8
7
9
1. Male bedrooms 2. Female bedrooms 3. Male side 4. Female side 5. Staff 6. Main stair 7. Courtyard 8. Escape stair 9. New apartment
N
0 10m
36 AJ SPECIFICATION 02.11
GREENHOUSE, MIXED USE DEVELOPMENTLEEDSWEST AND MACHELL ARCHITECTS
Clockwise from top right Wind turbine and solar panels on
roof; show flat; district hot-water tanks; courtyard
38 39AJ SPECIFICATION 02.11AJ SPECIFICATION 02.11
GREENHOUSE, MIXED USE DEVELOPMENTLEEDSWEST AND MACHELL ARCHITECTS
Detail A Detail B Detail C
Section
0 50mm
0 1m
1
1
1
1
1
2
3
3
3
3
3
4
4
4
5
67 1. Sarnafil G410-12EL
membrane 2. Kingspan Insulation
Thermaroof TR27 on proprietary vapour barrier
3. Pressed metal purlins at 600mm c/c
4. PPC pressed metal capping detail
5. Drip detail 6. Continuous ventilation
gap with insect mesh 7. 8mm RockPanel
Boards 8. Ventilation extract 9. Proprietary steel
support bracket system fixed back to SFS system
10. 50mm ventilation gap11. Weatherproof
membrane bonded to insulation face
12. 150mm Kooltherm k15 fixed to CP board
13. 15mm cement particle board
14. 150mm Kooltherm k12
between SFS support systems and 152 x 152 support columns
15. Vapour control layer and two layers of 15mm soundblock plasterboard
16. Kingspan Insulation Thermataper TT47 on proprietary vapour barriers
17. Reinforced concrete frame
18. Progressive collapse steelwork
19. WBS External Wall Insulation Render System with 130mm Kingspan K5 and vapour control layer
20. SFS support system21. Two layers of
15mm soundbloc plasterboard
22. c.380mm existing solid brick wall
23. New high-performance window to achieve 1.32 U-value
Details
1
2
3
4
56
7
8
9
10
11
12
13
14
15
1
16 17
4
6
19
8
13
20
21
22
19
23
8
18
1. Apartment – new addition
2. Communal corridor 3. Apartment – existing
building 4. Office – new addition 5. Deli/office/gym –
new addition 6. Car park 7. Existing building
40 AJ SPECIFICATION 02.11
GREENHOUSE, MIXED USE DEVELOPMENTLEEDSWEST AND MACHELL ARCHITECTS
Below View of the development looking west over Leeds
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