Passivhaus Affiliate

Members: Building Systems Providers

Membership of the Passivhaus Trust is open to anyone and does not necessarily imply achievement of the Passivhaus standard for buildings or components, or attainment of Passivhaus-related qualifications. Members of the Passivhaus Trust listed include architects, consultants, contractors, manufacturers and other industry professionals, as well as individuals, who support the work of the Trust in promoting the Standard in the UK.

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Knauf Insulation

St Helens

Knauf Insulation is the leading provider in the UK of high performance, non-combustible, sustainable Glass and Rock Mineral Wool insulation solutions. With more than 40 years of experience in the insulation industry, it is one of the fastest growing and most respected names in insulation worldwide. Manufactured using up to 80% recycled content, Knauf Insulation mineral wool solutions offer four key benefits to building occupiers. As well as thermal performance, they are non-combustible for fire safety, provide sound absorption and noise reduction for superior acoustic performance, and contribute to higher indoor air quality thanks to the Knauf Insulation revolutionary ECOSE Technology bio-based binder.


Passivhaus Homes Ltd


PHH supply a complete construction solution, PH15, for Passivhaus housing projects. PH15 covers the three essential Passivhaus elements, the thermal shell + triple-glazed windows + MVHR system. PH15 has been optimised to minimise thermal bridges, to deliver excellent airtightness, to effectively manage any overheating risk, & to keep the uplift in costs to a minimum. PH15 makes use of off-site construction methods, alongside use of natural materials that sequester carbon. For more details & example projects visit ( PHH also run an online store for Passivhaus related materials and products ( supported with good technical advice.


Advanced Housing Systems

The Passivhaus certified Total Envelope System, described by the Passivhaus Institute at Darmstadt system as the most comprehensive system they have ever assessed. The most integrated and complete system for self builds offering the total envelope including joinery, pre-installed electrical systems, delivered ready to skim plaster internally and clad externally in masonry, timber, etc. The GroundZero is an offsite constructed foundation system; GroundZero ICF is the highest performance Insulated Concrete Formwork system in the world and is the first choice for basement construction. The Axios Trousse is a panelised larsen truss wall and roof cassette timber frame/SIPS hybrid. World-class design blending high tech with craftsmanship & traditional materials. Manufactured in Devon, built worldwide.


Beattie Passive


The Beattie Passive Build System is a patented construction method that provides a continuous insulation seal around the core of a timber framed structure. Using Passivhaus energy efficiency principles, the double-layered insulation system is housed within a treated timber structure and delivers dramatic cost, time and environmental benefits. Adaptable to any shape/design of building the Beattie Passive construction method exceeds Passivhaus standards and is set to revolutionise the way we build today. As a company we offer a design only and a structural build service.


Beco Products Ltd


BecoWallform is the recognised British name for the isorast building system, the original building system to be approved by the Passivhaus Institut in Germany. A practical method of construction, detailed and approved to Passivhaus standards, the system has been proven in service for over twenty years. Manufactured in the UK using robust materials which will not deteriorate over time, Wallform has a long useful life and low maintenance costs.


Briggs and Forrester Engineering Services Ltd


Briggs & Forrester are a leading player in the building services market and one of the industry’s largest independent M&E contractors. The group has been at the forefront of the building services industry for over 70 years and is totally committed to quality, service and innovation. Working in partnership and collaboration with both our clients and our supply chain is our key driver. Continuity of care, improved efficiency, programme certainty and a pleasant working environment are valuable by-products of this approach. We pride ourselves on providing innovative and cost effective solutions within a constantly changing environment. The Health and Safety of our team, partners and the public is always at the forefront of our activities. Our commitment to a Net Zero Carbon future influences all that we do and drives our people to deliver excellence at every level.


Design 2000 UK


Design2000-UK Ltd is a company that is focused on eco-friendly building consultancy and construction services for London and the surrounding area. Services are provided to a different range of customers from large corporations to direct consultancy engagements with smaller building companies as well as individual homes. Our mission is to upgrade buildings to be eco-friendly (low energy homes) to reach good standards as per BREEAM, Passivhaus Design and AECB Silver standard. The concept is to minimise the negative impact of construction activities on the environment and provide sustainable,healthy,low energy buildings, whether new built or by renovating existing homes.


Eco Haus


Ecological Building Systems


Ecological Building Systems has been at the forefront of Intelligent Airtightness and Windtightness building product solutions and natural insulations for over a decade, gaining the sole agency in Ireland and the UK for ‘pro clima’ air & windtight products; GUTEX wood fibreboards; Calsitherm Climate Board; Diasen Thermal Plaster Systems, Thermo-Hemp/Jute Insulation, Elka Strong Board, Unilin Vapour Block and a full range of complimentary airtightness accessories. Ecological’s products have been used in numerous Passivhaus projects in the UK and Ireland with the team able to provide technical support and guidance, particularly in the area of moisture control, maximizing building durability and occupant health. We have been providing advanced modelling for many years using WUFI as well as U Value and Dew Point calculations and we provide full on-site support.




As a company with over forty years combined industry experience and having partnered with leading industry professionals, Econekt take great pride in being able to offer one of the most advanced Passivhaus and low-energy structural building systems on the market today.


Eden Spaces Ltd


Eden Spaces build compact buildings aligning with award winning architectural designers and using the Passivhaus methodology. Our modular spaces are expertly created off-site to minimize waste, maximize efficiency and ensure quality is carried through from conception to handover. To ensure quality is consistent, our building system is air-tight, lightweight and flexible to suit a variety of needs from simple office rooms, additional classrooms or workshops right up to tiny homes. Our goal is for all Eden Spaces built to be Passivhaus certified in the future, redefining what small spaces can be in practice using a tried and trusted building methodology.


Fleming Buildings


Fleming Buildings are a construction business with core experience in education, healthcare, community buildings, religious buildings and historical conservation. This experience includes new build, extensions, refurbishment and reconfiguration, frequently delivered within live, operational environments with typical projects ranging in value between £500,000 - £6m throughout Scotland. Additionally, we have in-house timber engineering, specialising in design, manufacture and erection of timber frame structures, glulam and mass timber solutions alongside floor and roof cassettes. We are a true construction company, having our own directly employed trades supported by our yearly intake of trade apprentices of whom account for over 10% of our workforce. We operate quality and environmental management systems to ISO9001 and ISO140001 and are members of TRADA, STA and FMB. We have an exemplar approach to health and safety, maintaining both CHAS and SMAS/SSIP accreditation.


Greenheart Sustainable Construction Ltd


Greenheart have been building beautiful, sustainable homes as principal or main contractor for over twenty years. From domestic extensions to groundbreaking newbuild Passive Houses, each project is unique and built to the highest standards. With a solid reputation in the Bristol area for excellence in green building, we place emphasis on training our workers and clear communication with clients.


Greenleaf Design and Build Ltd



Hanse Haus Bespoke Limited


With more than 90 years experience in quality pre-manufactured SIP building construction and more than 33,000 houses built throughout Europe, including the first certified Passive Houses, HANSE HAUS offer a Start2Finish service


Kingspan Timber Solutions Limited


Kingspan Timber Solutions offer a range of high-performance timber systems including our award-winning Kingspan ULTIMA™ build system, Kingspan Logic Plus and our SIP system; Kingspan TEK®. We provide so much more than a timber frame, with Kingspan you’re buying our expertise, built up over 50 years. Kingspan and our sister company, Potton, have helped thousands of self-builders and developers design and build dream homes since 1964. Why not visit our self-build show centre and browse our five show homes. Our Elsworth show house is the UKs first show home built to Passivhaus standard. Submit your drawings for a quote!


Kiss House


Kiss House is a range of customisable, high performance homes for the design and impact conscious self-builder and developer. Our service is all inclusive and stress free with short lead times and a fixed price. Our homes are Passivhaus certified for guaranteed quality and comfort and come in two to six bedroom options. We offer great design, a simple modern aesthetic, beautiful finishes (from a refined palette of interior and exterior options), natural materials and a wonderful sense of light and space. By adopting a process of continual improvement, we innovate new building systems and materials as we strive to raise the quality of both the homes we build and those built by others. We’re driven by the pursuit of quality because we believe home is of fundamental importance to people’s lives. Delivering great design with guaranteed quality and performance is what makes us tick. We do it to eliminate stress, uncertainty and complexity from the process of building your own home.


Mantis Energy Ltd


At Mantis Energy we believe that new and existing homes can be built better. We do this by designing properties into energy efficient, low running cost future homes. Mantis Energy specialise in low carbon buildings, renewable power generation and renewable heating & hot water systems. We provide a variety of design, project management and compliance services to see projects through from early concept to final installation and commissioning.



Newcastle upon Tyne



Providing low energy solutions – creating energy efficient buildings – we strive to inspire efficiency in every aspect of work we do. Whether constructing complete Passivhaus timber frame buildings, renovating or crafting smaller extensions, we will ensure that we deliver only the highest levels of comfort and energy efficiency. Our attention to detail doesn’t stop at how the house performs, it carries through all aspects of our work.


Pen Y Coed Construction & Insulation


From Passive House design and construction to high quality joinery finishes, we pride ourselves in creating beautiful and sustainable buildings. With over 25 years' experience, we prioritise a 'Fabric First' approach that starts at the design stage, using materials and products that maximise the performance and energy efficiency of the building. Our timber frame houses begin life in our factory in Wales as fully engineered, insulated and air-tight closed panels. The panelised units are then transported to site where a weather protected structure can be assembled in a few days. The materials in our build systems are predominantly timber based and procured locally where possible. By using Warmcel cellulose fibre insulation along with timber and woodfibre lining boards, timber I-beams, timber windows, and timber cladding, carbon is locked-in to create a sustainable building that is healthy, comfortable and enjoyable to live in. Warmcel has also been awarded a Nature Plus Certificate. Full technical information is available on our website: and


Pure Haus


We simplify the delivery of Passive House with a fabric first approach, our extraordinary team of experts create solutions to achieve super high energy efficiency, healthy and affordable homes. Every build is designed using a PHPP calculation to forecast a very accurate energy consumption. We take it further and calculate the lifetime CO2 footprint. Our design decisions are driven by CO2 footprint, energy efficiency, challenged by commercial viability, this all contributes to designing a building that eliminates fuel poverty and delivers comfort. Services: o Architectural services; Full PHPP and Zero Carbon Architectural design and consultancy service o Zero Carbon Workshop; Timber frame manufacturer and builder of Passive House homes Customers we work with: o Self builders o SME developers o Community Land Trusts and o Social Landlords


Total Home Environment Ltd

Moreton in Marsh

We specialise in helping self-builders and renovators to achieve the best possible home environment, in the most energy efficient and cost effective way. Passionate about clean fresh air, we know how to plan, select and install ventilation, heating and cleaning systems to achieve the healthiest outcome for your home and all those who live there. We research and choose our products carefully so you can be sure they give outstanding performance and match your budget. Our products include: • heat pump ventilation • heat recovery ventilation • compact service units (award winning) • air-source heat pumps • air-water heat pumps • central vacuum systems • We also complete MCS reports for air-source heat pumps for the Renewable Heat Incentive and room-by-room heat loss calculations to ensure you get the right heating solution for your home.


Ty Eco


Tŷ Eco (Welsh for Eco House) produces an economical, panelised Passivhaus building system. We do not use polyurethane, EPS (polystyrene) or any other oil-based products to insulate our wall, ceiling or intermediate-floor panels – from the slab up, the building system is sustainable, renewable and/or recyclable. Our sister company - Minera Roof Trusses - has been producing engineered timber products since 1977. Utilising their extensive manufacturing experience, we have engineered a high-quality building system that can be easily supplied to site and erected quickly with a finish ensured through the Passivhaus quality assurance process. Tŷ Eco is currently constructing a prototype bungalow with a view to achieving Passivhaus accreditation (April 2021).

Worcester Renewables Ltd