This Certified Passivhaus is a conversion of an existing steel framed barn. Kingspan TEK SIPs structural panels were used to thermally ‘wrap’ the original steel frame providing a continuous and airtight thermal envelope to the walls and roof.

The envelope was then faced with rendered blockwork and timber cladding to the walls and a graphite grey zinc roof. The triple glazed windows and doors were supplied by Internorm.

The project also included a 150m² garage and studio workshop with solar PV array to the south facing roof.


Treated Floor Area: 356 m²

Annual Heating Demand: ??KWh/m²

Peak Heating Load:   ?? W/m²

Frequency of overheating:  (> 25­°C) ?? %

Airtightness:    ?? ac/h@50Pa

Primary Energy Renewable Demand:  ?? KWh/(m²annum)

On site renewable energy generated :   ?? KWh/annum

Embodied Carbon : ?? kgCO2e/m²


Location: Mawdesley, Nr Ormskirk

Architect: Phi Architects

Completed: 2021

Contractor:  Point1Building – SIPs

Stuctural Engineer: Toby Savage

Passivhaus Certifier:  WARM

Construction Value:  £500,000

Photography:  Client and Phi Architects