|Location: Leamington Spa, Warwickshire.|
|Completion Status: Occupied & Certified||Occupancy: Occupied December 2013|
|Architect: Sjölander da Cruz Architects||Consultant: Passivhaus Consultant-Nick Grant. M&E Engineer- Alan Clarke. Structural Engineer- Bob Johnson.|
|Contractor: Arden Construction Limited||Client: Sjölander da Cruz Architects|
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Finalist in the Bespoke Project Design category of the UK Passivhaus Awards 2014. River Studio was originally a packing shed for a market garden and is located in greenbelt justoutside of Leamington Spa. Sjölander da Cruz Architects acting as both Client and Architect werepassionate about repurposing old buildings and wanted to experience, hands-on, the practical requirements of developing their own Passivhaus Enerphit studio from an eyesore asbestos clad shell.
As the existing building is in greenbelt, the orientation of the studio and position on site wasdefined. This presented challenges throughout the process of design and construction for meetingthe PH Enerphit standard.
The design optimises daylighting and frames vistas; this balances visual comfort with great viewsof the beautiful surroundings, encouraging creativity and enhancing wellbeing. The studio layout is simple and democratic. The serviced spaces, WC and kitchen are accommodated together with theplant, to the north side, allowing the studio space to be double aspect. Artificial lighting has beendesigned to be efficient, reducing energy consumption whilst animating the spaces.
Risk of overheating was reduced by the introduction of brise soleil and overhangs in the walls aswell as utilising cross ventilation throughout the spaces. Service runs are expressed, which willallow future flexibility and fit in with the simple use of materials and finishes.
The final air test achieved 0.4 air changes per hour at 50 Pascals. The predicted heating energy demand result was 18kWh/m2yr well within Passivhaus Enerphit requirements (25kWh/m2yr).
The re-purposing of this unpromising building is an example of how imaginative re-use can bebetter than a new build option!
Key Project Innovations:
- Wrapping Existing Structure and Layering of Structurally Insulated panels and Cladding toprovide continuous airtight and wind tight layer outside of structural zone.
- Additional layer of insulation to the SIPs resulted in innovative use of cladding fixings and detailsavoiding thermal bridging.
- Junctions between existing structure, foundations and new elements to ensure a continuousairtight and windtight layer to limit potential thermal bridging.
- Sequencing of Works around existing Structure and Foundations.•Keeping within Existing Volume and Footprint whilst maximising treated floor area.
- Maximising Daylighting to reduce requirement for artificial lighting.
- Collaborative working with Contractor, Design Team, subcontractors and suppliers