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Alexandra Road

A stylish Passivhaus home in South Manchester has achieved exceptional levels of airtightness through a combination of careful detailing and a high performance structure.

The Project

Steve and Mel Howarth hired certified Passivhaus designers, PHI Architects, to create their dream home.

After considerable research, PHI selected the Kingspan TEK Building System to form the walls and roof of the structure. The firm worked closely with highly experienced Kingspan TEK Delivery Partners, Point1 Building Systems, to achieve an extraordinarily energy efficient design.  

Product:
Kingspan TEK Building System
Location:
Manchester
Architect:
PHI Architects
Delivery Partner:
Point1 Building Systems
Steve and Mel specified a structural insulated panel construction in their initial brief as they were keen to utilise the benefits of off-site fabrication. The Kingspan TEK Building System scored highly on thermal efficiency as the core insulation material has a lower thermal conductivity than other products. As a result, wall thicknesses could be minimised which was critical given the relatively tight plot.

Sara Darwin - Architect, PHI Architects
Minimising air leakage was essential as it allowed PHI to incorporate design elements, such as an L- shaped living space, which added extra external surface area to the home. A good airtightness result can reduce energy consumption by 1 kwh/m²/a which can make all the difference between a pass and fail.

Point1 Building Systems were responsible for achieving the interface detailing that was designed. With the added membranes and tapes they installed, the property was able to achieve an outstanding test result of 0.45 air change per hour @ 50 pa.
In addition to the high performance fabric, the Kingspan TEK Building System also allowed us to design the first floor rooms with open ‘vaulted’ ceilings. The tall ceilings create a feeling of space and light and the overall daylight qualities in the house are excellent.

Sara Darwin - Architect, PHI Architects

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