Passivhaus Affiliate

Members: Component Suppliers & Manufacturers

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.


Baumit Ltd


Baumit is one of the leading European brands for sustainable plaster, render and external wall insulation for the construction industry. Founded in Austria in 1988, Baumit now has a presence in over 30 countries worldwide. Baumit UK offer an extensive range of innovative, tested products, including BBA approved EWI systems, façade renders, paints and healthy living indoor plasters. Product research, development and innovation, combined with excellent customer service are an important part of the Baumit values, and we work in close cooperation with our partners to ensure every project is a success.


CVC Direct


CVC Direct Ltd are distributors for Brink Climate Systems, the leading manufacturer in Europe of Passivhaus certified MVHR units with constant flow motors. This series of low energy MVHR units, several of which are available with an A+ ErP energy rating, offer a range of solutions including demand controlled ventilation. The Brink units are noted for the sophisticated design with a large range of operating parameters yet simple to install and commission as the air flows can be programmed with the digital controls. Years of experience means our designers can offer informed advice and innovative solutions for domestic ventilation installations. Brink MVHR units, when used in combination with our easy-to-install radial ducting, can ensure low energy, low noise, and no leak heat recovery ventilation systems. CVC Direct carry stock of both the Brink MVHR units and complete radial ducting systems for next day delivery.

Design Engine Structures



Ecological Building Systems


Ecological Building Systems has been at the forefront of Intelligent airtight and windtight 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; SHERPA Timber Connectors and Thermo-Hemp Insulation. 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 and maximizing building durability and health. We have been providing advanced modelling for over 5 years using WUFI as well as U Value and Dew Point Calculations and 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.




Ecospheric specialises in sustainable property development and consultancy. Our focus is on pioneering eco projects that not only save carbon but also drive technological change. Our current pilot projects include the first European passive house plus retrofit of 2 luxury Victorian semi-detached homes, Designing what could be the first Zero waste and Zero energy food hall in the world. Development of the first all electric, petrochemical free construction system for passive house social housing.


Eden Insulation Ltd


Eden Insulation specialise in modular timber frame using natural materials. Having built numerous Passivhaus projects, Eden Insulation have considerable experience designing and constructing timber frames to the rigorous standards required for Passivhaus buildings. Your frame will be custom made for you to the exact specifications of your architectural plans, using the highest-performing airtightness materials. A typical two-storey frame is erected on site in just a few days, giving you a weatherproof, airtight core built to stand the test of time.


Glatthaar-Fertigkeller Ltd


Lower Level Higher Living. Cold, dark and damp basements are a thing of the past, Glatthaar introduces their basement concept providing warm, bright and spacious living comfort. For over 30 years we have specialised in all aspects of basement construction. We focused on developing "intelligent" basements which will always add value to your home. Over 2.500 basements a year proves that our concept works. We have developed the most technologically advanced off site manufacturing process in the industry. Combined with our on-site installation techniques, we confidently offer clients the most effective basement with the fastest on side built time. Naturally with our concept we are able to deliver a construction that meets (and excels) the Passive Standard U-Value of 0,15.


Green Building Store


Green Building Store is a manufacturer and supplier of cutting edge sustainable building products. As well as offering a wide range of Passivhaus products ( including MVHR, windows, wall ties and airtightness products), Green Building Store also now offers Passivhaus training, construction and consultancy services. Its construction division – Green Building Company – recently built the Denby Dale Passivhaus – the UK’s first cavty wall Passivhaus. To get cavity wall to perform to Passivhaus standard the team had to develop many original design details, especially around junctions. These details are outlined in various free resources available from Green Building Store’s website, including a technical briefing and film on the project.


Green Unit Ltd


The arc-haus from Green Unit is a unique modular hi-tech structure using sustainable materials and processes. It exceeds the latest building regulations for domestic and public use and has adopted passiv-haus principles in its manufacture. The arc-haus is designed for home and business use with many different sizes and internal layout configurations. Green Unit Ltd is a company committed to ecological and ethical principles from its design and construction concepts to the way it procures its materials and treats its employees and suppliers.


Hempsec Ltd


Hempsec Ltd. is the research subsidiary of Greencore Construction. Hempsec is involved in a 3 year, EU funded research project with Bath University to commercialise high performance, low embodied carbon building panel systems using hemp, lime and timber. Our work involves designing, thermal modelling, carbon auditing and post occupancy evaluation of buildings constructed by Greencore. We have two Passiv Haus trained members of the team (Ian Pritchett and Gabriela Lavatelli). We are also involved in developing our own design guide, services strategy and performance standards to combine the PH standard with the 2016 zero-carbon standard AND low embodied carbon using natural materials.


ICF Supplies Ltd



Icynene Inc


The Icynene Insulation System is a soft, flexible, breathable, foam insulation and air barrier. Sprayed as a liquid Icynene expands to 100 times its initial volume in seconds. Icynene’s unique formulation sets it apart from other insulation products offering many advantages over traditional insulation materials and more modern alternatives. Icynene contains no HFC’s, CFC’s HFA or HCFC’s and it remains soft and flexible accommodating any normal expansion contraction or movement within a building. The Icynene Insulation System is 100% water blown containing no toxic chemicals and will deliver the performance you can count on for a lifetime of savings and comfort.


Insulated Floors Ltd



Internorm Windows UK Ltd


Internorm is the largest window brand in Europe with over 20 million window units produced. Internorm is not just the market leader, but the knowledge leader due to its extensive experience since 1931. As the only window brand in Europe with nine passive house certificates, Internorm represents the leading expertise in energy efficient windows and doors, and is the market leader in Europe for highly thermally insulating window systems.

Josko Fenster und Turen GmbH

Kopfing, Austria

Josko was founded in 1960 by KommRat Johann Scheuringer, as a classic joiner‘s workshop. As early as 1970 the company began to specialise in windows and doors. Josko has this entrepreneurial vision to thank for its development into one of the leading brands in the industry. The Josko products are manufactured at the two centres of Kopfing and Andorf in the Upper Austrian Inn District. Today Josko’s core business lies in the manufacture and marketing of windows and doors of wood, wood/aluminium, composite/aluminium, plastic and plastic/aluminium in the high-end quality segment. Behind the stringent quality demands stands a Josko manager in each area of competence. At Josko all the divisions are given top priority.


Knauf Insulation

St Helens


LAMILUX U.K. Limited

Bury St Edmunds

Lamilux offer industry leading roof light and roof glazing solutions. Our product range includes; rooflight domes, continuous barrel vault roof-lights, EN 12101-2 smoke vent AOVs and large glazed atria. We specialise in the supply and installation of large flat glass roofs. Our rooflight solutions are all free of thermal bridges and we have systems independently certified to the Passivhaus standard.


Magic Thermodynamic Box



Magmatech Ltd


MagmaTech develops thermally insulating fixings designed to remove thermal bridging from insulated buildings. This includes low conductivity basalt fibre wall ties for use in masonry cavity walls; “TeploTie TM”. The ties were used in the breakthrough Denby Dale Passsivhaus project and many other low energy projects across the UK. Fixings have also been used in Passivhaus retrofit / refurb projects. Thermally broken connections between most construction materials are possible. MagmaTech welcomes the opportunity to solve your thermal bridging problems.


MBC Timber Frame UK Ltd


MBC specialise in the production of Passive Homes throughout the UK for people looking to benefit from huge energy savings and reduce their heating demands by 90%. Our super insulated, precision engineered homes are at the forefront of innovation and design and are now available at an affordable cost. Once considered the construction technique of the future, our Passive House System is fast becoming the building method of choice by those wishing to live in beautiful, environmentally responsible, intelligent homes that generate significant cost savings.


Munster Joinery UK


Munster Joinery is amongst the largest manufacturers of energy efficient windows and doors in Europe. Founded in 1973, the company has grown year on year with the continuous development of new products, materials and processes. The company has a 940,000sq ft. production facility in Ireland and another 230,000sq Warwickshire in the UK. In recent years Munster Joinery has focused on developing energy efficient products through green and sustainable processes and operations. All of the products are designed for optimal thermal performance with U-values as low as 0.47 W/m²K. Several window systems, all of which are designed, developed and manufactured in house are now Passive House certified. Property owners are assured of an energy efficient product from an environmentally aware source together with an efficient service when they purchase Munster Joinery products.


Natural Building Technologies (NBT)



NIBE Energy Systems Ltd


NIBE ENERGY FOR LIFE. NIBE Energy Systems Ltd is a subsidiary of NIBE Climate Solutions Business Area based in Sweden and is a leading European manufacturer in the sustainable energy sector. The company is committed to sustainable construction and specialises in providing high-tech energy-saving solutions for heating, ventilation, cooling and heat recovery. It offers Energy for Life when it comes to renewable heating solutions, from ground source, air source and exhaust air heat pumps to solar thermal packages and whole-house ventilation. NIBE also prides itself on delivering a variety of training courses at locations across the UK, aimed at providing installers with all the knowledge and expertise needed to carry out efficient, start-to-finish installations. For more information, visit


Passive House Systems Ltd


Passive House Systems Ltd have been involved in air tightness in new builds and renovations since 2008. We are proud to be the distributors of the German manufactured Gerband Rooftite system of products in the UK and Ireland. We are continuously listening to our various customer types and improving our product range to meet increased levels of air tightness and vapour control. While headquartered in Essex we provide an unrivalled service to our customers in the UK and Ireland, especially with product support and supply.


Paul Heat Recovery Scotland


Being actively involved at the start of Passivhaus in Scotland from 2010, we have focused on its specialised ventilation technology, partnering with PAUL, one of the first and foremost German MVHR manufacturers. As such, the University of Strathclyde invited us to provide practical training in MVHR for the CEPH course. Our no-compromise approach in terms of equipment, ducting and installation, with emphasis on customer service and sound advice has lead us into a different direction than most competitors. Foreseeing the future of demand controlled ventilation, we have recently added Cascade Ventilation Systems with minimal ductwork for smaller dwellings


Pen Y Coed Construction & Insulation


Pen y Coed Insulation are the specialists in Warmcel insulation and the pro clima airtightness system. Our teams have 15 years of experience of installing Warmcel in all types of timber frame buildings from traditional oak framing to I beam technology, extensions, social housing, to factories and schools. Pen y Coed Insulation can offer you technical and construction advice on all aspects of Warmcel insulation and airtightness solutions. Warmcel is cellulose fibre insulation made from recycled newspapers for use in timber frame walls, floors and roofs. Cellulose fibre is manufactured by milling newspapers which are then treated with inorganic salts to protect against burning and pest damage. Warmcel is installed by injection under pressure filling stud walls and roofs completely leaving no gaps or voids so the maximum insulation levels are achieved for the most cost effective sustainable insulation. Pen y Coed Insulation have been working on the latest Passivhaus projects using Warmcel and the pro clima air tightness system getting some of the best airtightness test results attained in the country. Our airtightness testing technicians can give you advice at the start of your project through to testing and certification for your airtightness test result.


Saint-Gobain Delegation UK & Ireland


Our mission is to create great places and improve daily lives. As a business, Saint-Gobain designs, manufactures and distributes materials and solutions, which are key ingredients in the wellbeing of each of us and the future of all. They can be found everywhere in our living places and our daily life: in buildings, transportation, infrastructure and in many industrial applications. They provide comfort, performance and safety while addressing the challenges of sustainable construction, resource efficiency and climate change.


Total Home Environment Ltd

Moreton in Marsh


Urban Front Ltd


Urban Front design and make hardwood contemporary front, internal feature and garage doors with steel reinforced cores, high security locks, security keys, and pivot or 3D hinges. We have recently launched our new E98 Passiv door which has just achieved Passive House Certification. These doors are available in most of the Urban Front popular door designs and in all of our hardwoods including Iroko, European Oak, American Black Walnut, Fumed Oak and Wenge. The doors are made with triple rebates, steel reinforcement, high insulation values and various bespoke sizing. Urban Front doors are made in the UK. For more information, please call our office on 01494 778787