Lime Tree Passivhaus

Lime Tree Passivhaus project with MVHR system from Green Building Store
With Green Building Store we know we have probably the country’s most knowledgeable and experienced MVHR suppliers and designers, so we can be sure that this aspect of the design has been properly considered. At the Lime Tree Passivhaus we also used a Green Building Store approved installer so that we could be sure the whole process delivered the designed performance.

Dan Higginbotham – Parsons + Whittley Architects

Dan Higginbotham – Parsons + Whittley Architects

The most challenging aspects of Passivhaus design are airtightness and the associated ventilation requirements. Given that airtightness and ventilation are inextricably linked therefore, it is essential that MVHR design, installation and commissioning is carried out by competent and experienced persons.

Lime Tree Passivhaus is a 2 bed 106m2 retirement bungalow designed by Parsons + Whittley Architects on a garden plot for private clients. The design is a response to a number of key constraints including the tight site and the presence of a protected Lime tree. The project is a Finalist in the Rural category in the UK Passivhaus Awards.  The project has also recently picked up two other awards LABC Building Excellence Awards 2016 (East Anglia) – WINNER, Best Individual New Home and Norfolk Association of Architects Design & Craftsmanship Awards 2016 – FULL AWARD, Class A – New Residential

Green Building Store designed, supplied and commissioned the MVHR system for the project.

Background

The curved form of the dwelling, centred around the Lime tree, allows the building to make the best use of the site and positions the tree as the central focus for both the building and the garden. The building is constructed off a reinforced concrete raft supported on mini piles, carefully threaded past remaining archaeology, to support a traditional cavity wall construction and radial ‘I’ beam timber rafters. The insulation is provided by blown EPS platinum beads 300mm in both the walls and the roof, whilst the floor has 200mm of PIR insulation supporting a floating finish.

The project was constructed by Grocott and Murfitt, a first time Passivhaus contractor, which sent the construction team on the certified Passivhaus tradesperson training course to help ensure a smooth and hitch-free build.

MVHR heat recovery ventilation

Green Building Store supplied, designed and commissioned a PAUL Focus 200 MVHR system for the project. The system was installed by Green Building Store approved MVHR installer Renewable Plumbing Solutions Ltd.

Dan Higginbotham, Associate at Parsons + Whittley Architects commented:

“The most challenging aspects of Passivhaus design are airtightness and the associated ventilation requirements. Given that airtightness and ventilation are inextricably linked therefore, it is essential that MVHR design, installation and commissioning is carried out by competent and experienced persons.

With Green Building Store we know we have probably the country’s most knowledgeable and experienced MVHR suppliers and designers so we can be sure that this aspect of the design has been properly considered. At the Lime Tree Passivhaus we also used a Green Building Store accredited installer so that we could be sure the whole process delivered the designed performance.”

More information

Architect/ Passivhaus Consultant: Parsons + Whittley Architects www.parsonswhittley.co.uk

Contractor: Grocott & Murfitt Ltd grocottandmurfit.co.uk

Mechanical Designer: Alan Clarke Tel: 01594 563356

Mechanical Installer: Renewable Plumbing Solutions Ltd. www.renewableplumbing.com

Engineer: Plandescil Consulting Engineers www.plandescil.co.uk

Certifier: Mead Energy & Architectural Design Ltd www.meadconsulting.co.uk

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