Passivhaus Affiliate

Standard Members

A. Proctor Group Ltd


The A. Proctor Group Ltd. is a 4th generation family owned business that has been supplying innovative products to the construction industry for over 80 years. We have 5 product divisions, Acoustics, Condensation Control, Groundwork, Thermal Insulation & Timber Cladding. We offer a wide range of products, some of which are particularly suitable for low carbon properties. Wraptite-SA is a self-adhesive airtight vapour permeable membrane designed to be applied externally. Spacetherm aerogel insulation offers an ultra-thin solution for thermal upgrades. We also offer complete technical support and advice, including SAP Calculations, U-values and Condensation Risk Analysis.


Abba Energy Ltd





Adams:Scott is a low energy building design and construction consultancy with a collaborative approach. We work with architects, developers and self builders to design and construct very low energy and comfortable buildings.


Advanced Housing Systems

Gerrards Cross

Our services are broad and detailed - we will help with any aspect of your build, from finding the best architect that suits you, to our TotalBuild and ManagedBuild services that insulates you from the difficult and time-consuming aspects of building so you can concentrate on the design elements that make it your own. For a more detailed look, go to SERVICES. Our products marry advanced technologies in areas such as thermal and acoustic insulation while using traditional wood based materials which are high performance and carbon zero or better.


Advantage Austria


Advantage Austria UK is the London-based arm of the Austrian Federal Economic Chamber and promotes bilateral trade links between UK and Austrian companies. We actively work to bring together UK and Austrian experts in the Passivhaus sector by organising and participating in events and disseminating information. As the representative voice of Austrian business in the UK we are able to help UK companies find reliable business partners to further the development of carbon-neutral building.


Aecom Professional Services LLP


AECOM is a fully integrated professional and technical services firm positioned to design, build, finance and operate infrastructure assets for public and private sector clients in over 150 countries around the world. The firm comprises nearly 100,000 employees, including architects, engineers, designers, planners, scientists and management and construction services professionals. Our vision for a more sustainable future drives much of our work, including the foundation of how we operate as a company. This commitment is visible in the everyday practices of our people and our projects. We have successfully delivered numerous Passivhaus certified projects for our clients both in the UK and abroad, and are leading research into the cost of Passivhaus, drawing on our extensive cost database of projects from across the globe.


Airflow Developments Ltd

High Wycombe

Airflow Developments Ltd have been producing ventilation solutions for sixty years and provide the widest range (8 models) of Passive House Institute approved Mechanical Ventilation with Heat Recovery (MVHR) units for both residential and Commercial buildings in the UK. Our team of experienced system designers will take your plans and guide you through from specification to installation ensuring you create a healthy, low cost heating dwelling. Operated by a choice of ‘On-Demand’ control options our range of reliable, quality products coupled with the innovative and compact ‘Zero Leakage’ radial ductwork system help deliver a comfortable, low energy environment for both building occupants and owners alike.



Haverhill distribute SIGA, the Swiss manufacturer of Passivhaus tapes, membranes and adhesives, in the UK. SIGA is the European market leader in terms of both market share and quality of product. We chose to represent them as they are the only company who manufacture in-house, in Europe and most importantly their customer service and knowledge are superb. also specialise in selling expanding foam tape including Illbruck and Vitaseal brands. We are in the unique position of being the biggest stockist of SIGA product in England, delivering next day. We also receive price support on larger orders to guarantee customers the best price on the market. We also extend the usual SIGA guarantee of 5 years alongside their any SIGA tape on any other membrane promise.


AIS Chartered Building Surveyors


Alan Clarke


Alan Clarke is an energy consultant and building services engineer specialising in low energy and passivhaus buildings.

Alchemilla Architects Ltd


Alchemilla Architects Ltd is a RIBA Chartered Practice based in rural Somerset in the Blackdown Hills. Our work ranges from single houses and small housing estates to extensions and refurbishment projects. A development of high end holiday lets, a conversion of a listed building to offices and a swimming pool are part of our current workload. We see architecture as integral to the built environment, and pride ourselves in providing a full service from inception to completion. Part of this is a strong commitment to energy efficient buildings with our principal architect being a certified Passivhaus Designer.


Alex Baines



Milton Keynes

Altechnica is a Zero Carbon / Super-Passive Solar Architecture, Technology Innovation and Renewable Energy Consulting practice established by Dr Derek Taylor in 1990 to carry out commissions, research and projects. Altechnica reviewed renewable energy potential in Uttlesford, Merton BC and in Kent. They are currently the architect/renewable energy consultant for a Super Passive Solar™ Zero Carbon House in West of England, which combines zero carbon design with innovative technologies to achieve one of the most energy efficient houses in the UK, designed to achieve PassiveHaus standards. Altechnica is developing a family of innovative Altechnica Zero Emissions Dwellings™ intended to result in zero emissions of CO2 and to obtain practically all of its energy requirements from building-integrated renewable energy and require no space heating.


Andrew Burningham


Anglia Air Testing


Anglia Air Testing was set up in 2006 to provide air leakage testing for compliance with UK Building Regs part L. Since then we have added ventilation testing for part F and MHVR commissioning to our services. As a very experienced air leakage tester we have been referred by a number of Passivhaus assessors to carry out tests on their behalf and provide results and reports. We are registered members of the ATTMA Scheme (Air Tightness Testing & Measurement Association). Our tests are carried out in accordance with ATTMA (Air Tightness Testing and Measure Association) TS L1 standards and use Retrotec equipment calibrated to UKAS standard annually. We cover all of East Anglia and the South East.

Anglia Ruskin University


Anglia Ruskin University is one of the largest Universities in the East of England, with two main campuses in Cambridge and Chelmsford. With over 1000 academic and research staff and over 25000 students it is a leading research and teaching organization renowned across the UK for its innovation and business support activities. Its recent investment over €100million in new equipment and facilities are part of its commitment to enhance the competitive performance of industry through innovation. ARU supports over 1000 industrial companies every year, across a broad range of industry sectors.

Anne Thorne Architects Partnership


The 15-40 collective of architecture practices share a commitment to radically reduce the energy consumption of buildings through a ‘fabric first’ approach. Anne Thorne Architects, Arboeal Architecture, CTT & Passivhaus Homes, Good Architecture, Prewett Bizley Architecture and Suetake Studio, who form 15-40, include 7 Certified Passivhaus Designers, and have extensive experience in delivering well designed sustainable new build and retrofit projects. By co-operating to share ideas, knowledge and resources 15:40 is able to offer clients a greater depth of expertise.


Arboreal Architecture




Your home extension, new build or commercial assignment is one of the most important projects you will ever undertake. It takes careful understanding, passionate commitment and sheer quality of design to deliver your vision - and future proof your plans. ArchitectureLIVE offers outstanding expertise and our innovative and cost-effective designs have brought delight to clients in Surrey, Hampshire, West Sussex and beyond. We champion cutting edge technology and sustainable design to deliver energy efficient homes which are pleasant to live and work in, with constant room temperatures and ample daylight. Such buildings ultimately help insulate our clients from the ever-rising cost of energy and relieve the impact on the environment.


ARP Design Solutions Ltd


A R P Design Solutions is an established CIAT registered architectural design & consultancy practice based in London. The ethos of the practice is to combine the wealth of design experience gained and incorporate ideas and new innovations in delivering our clients with ultra- low energy buildings with the incorporation of sustainable materials and renewable technologies. We are passionate in ensuring that the buildings we design and construct have no detrimental effect on the environment. We also work closely with building contractors to ensure all necessary measures are taken to prevent environmental risks during building works on site.


Associated Architects LLP


Associated Architects was formed in 1968 and aims to create architecture of the highest quality which embodies a deep sense of responsibility towards our clients, the users of their buildings and the environment. Based in Birmingham, we have designed buildings in the UK and elsewhere, across the private and public sectors. These include schools, universities, offices, housing and urban regeneration schemes. Underpinning the continuing success of the practice is our ongoing commitment to the delivery of a highly professional service, and sustainability in the widest sense. The number of awards received by the practice recognises the consistently high quality of our design.


Austin & Hobbs Ltd


Austin and Hobbs Ltd were formed in 2006 and are cost consultants covering commercial aspects of the construction industry, from initial cost planning, production of bills of quantities, estimating, procurement and project surveying. We cover all forms of construction sectors from education, retail, industrial, new build housing, retrofit works to housing, eco buildings. Our client base ranges from direct clients, town councils, social landlords, quantity surveying practices, design consultants, main contractors, developers and sub-contractors.


Austin-Smith:Lord llp


Austin-Smith:Lord has been delivering the highest degree of creative and practical thought in architecture since 1949. Our celebrated history has given rise to many buildings of national importance, and over 150 awards and commendations for outstanding architectural and environmental design.