Passivhaus Consultant and Designer, Bristol.  Very Low Energy Buildings.  Domestic and non-domestic.  New build and refurbishment. 

07502 425158

Bristol, UK



Want to visit a Passivhaus home in Construction?

Sign up with @Greenregister for a visit to our latest Passivhaus project in Nailsea, near Bristol on 22nd February 2018.

The timber frame house is being constructed by @greenheartbris who are hosting the visits.

Construction is i-beam timber frame with external diffutherm and render and Warmcel insulation.  The roof is trussed rafters with Warmcel insulation at ceiling level.

Windows are from Rationel and Green Building Store.





New Passivhaus Primary School Planned in Carmarthenshire

We have been appointed Passivhaus Consultant by Design and Build contractor Lloyd and Gravell to advise on the requirements to meet Passivhaus for this proposed ne primary school.  The project is being undertaken for Carmarthen County Council.

This is a collaborative team effort with the contractor, client, architect - Acanthus Holden, M&E engineers, timber framers and window and door suppliers to optimise designs and minimise heat demand and primary energy usage.






Planning Permission Granted for New Passivhaus Archive

We have been advising Carmarthen County Council on their proposed new Passivhaus Archive in Carmarthen.  

The design is for a new radical low energy archive with minimal plant required to maintain the exacting environmental conditions required for document storage.  

The aim is for this to become the second passivhaus archive in the UK.  We have been working with Elemental Solutions and Alan Clarke to implement the lesons learned from the first Passivhaus archive in Hereford.

Full planning permission was granted in November 2017 and we understand that the project is currently out for tender.  We expect to be retained for Pasivhaus advice during detailed design and construction.




Passivhaus - Is it worth it?

Piers's presentation to a sold out Green Register Bite Size event on 24th November at which he helped Greenheat Sustainable Construction to answer the question - Passivhaus - Is it worth it?  The event was well attended by a range of building professionals who were able to hear from Rich Hatfield of Greenheart how they are using lessons learned from building to the Passivhaus standard in a range of low energy buildings.  Piers's presentation covered costs and benefits and showed how over a 20-30 year period, properly designed Passivhaus buildings will almost always be better value than typical buildings built to current Building Regulations.  He also explained how best to achieve the Passivhaus standard through careful planning, design and construction.



Another Listed Building needing an Energy Upgrade

This Grade II Listed former textiles mill is undergoing a change of use to residential use with groundfloor office space.  We are working with Greenheart Sustainable Construction to develop the detailed plans for the conversion, making the building energy efficient and comfortable to live in, whilst being sensitive to the buildings heritage.  

Insulating old solid walled buildings needs to be done with care and a whole house approach will be taken to include insulation, wiondow upgrades, airithghtness, ventilation, heating and hot water.  

The fundamental strategy is to select appropriate, mainly natural, building materials and get the ventilation and vapour control right.