About Us
Our Story
We help build your visions
Aldas are the most experienced airtightness testers and consultants in the UK, Paul with over 30 years’ experience alone.
Aldas are experienced trainers and originated the “Airtightness Champion” concept, as well delivering numerous on-site trainings and many CPD seminars to architects and builders. Aldas developed the 12 Steps to Airtightness approach to enable UK contractors to reliably deliver airtightness in Passivhaus and other low-energy projects.
- Airtightness Consultancy
- Design advice & Planning
- Airtightness Testing
- Training courses & CPD
What We Offer
Aldas offer a range of services to help you achieve the best Airtightness for your project.
Design Planning & Consultancy
The key to achieving good airtightness is in the planning and design phase
Airtightness Testing
Aldas are the most experienced Airtightness testers and consultants in the UK
Airtightness Training
Aldas are able to offer both on and off-site training in airtightness to help you achieve minimal air leaks
Our Team
Aldas is a collective of different people coming together to reliably deliver airtight buildings
Paul Jennings
Airtightness consultant. FOUNDER
Paul Jennings of Aldas is the most experienced airtightness tester and consultant in the UK, with over 30 years’ experience.
Paul is an experienced trainer and originated the “Airtightness Champion” concept, as well as delivering numerous on-site trainings and many CPD seminars to architects and builders. He developed the 12 Steps to Airtightness approach to enable UK contractors to reliably deliver airtightness in Passivhaus and other low-energy projects.
He has presented at many conferences and demonstrated test equipment at others. He has also given talks at Passivhaus conferences in Vancouver and Germany, as well as in the UK. Paul has been involved in most UK Passivhaus projects in one or more capacities. He is also a Director of the UK Cohousing Network.
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Projects
Some of the major projects Aldas have been involved in as airtightness testers, trainers and quality control consultants
St Sidwells Swimming Pool & Leisure Centre, Exeter
Aldas provided airtightness design guidance and extensive preliminary air leakage investigations. Testing of mock-up assemblies and partial sections, followed by preliminary and acceptance air tightness testing were undertaken by Aldas. The newbuild Passivhaus leisure centre, at St Sidwell’s Point in Exeter, passed its final test just before Christmas 2021
Agar Grove, Passivhaus Newbuild
The Agar Grove estate in Camden, North London, is being re-developed in stages to provide new build Passivhaus accommodation, ultimately delivering over 500 units. Aldas carried out preliminary and acceptance testing of Phase 1A and extensive preliminary and investigative testing of the four blocks in Phase 1B, including managing remedial sealing works in three problematic stairwells
Erneley Close, Manchester – EnerPHit Refurb
The first major EnerPHit project in the UK, the two run-down Erneley close social housing blocks were transformed with full enveloping, airtightness and MVHR systems. Aldas provided initial training for the site airtightness champions team and extensive preliminary and acceptance airtightness testing. Since completion, residents report affordable comfort and great satisfaction
Larch House – Individual Newbuild Passivhaus
Larch house is the most airtight dwelling in the UK to date, achieving a zero Passivhaus airtightness (0.048 AC/hr @ 50 Pa) in Spring 2019. Self-built by a dedicated engineer, ably assisted by a German trained master carpenter, this cross-laminated timber (CLT) set a new standard for airtightness in the UK. Aldas’s testing required re-calibration of our fan for very low airflows!
Registered with ATTMA
The Air Tightness Testing & Measurement Association (ATTMA) is a professional association dedicated to promoting technical excellence and commercial effectiveness in all air tightness testing applications. It was formed in 2002 to promote the testing and measurement industry and supports its members by extending market awareness of the technology and the members’ services.
Organisations we work with
Building bridges to a sustainable future
Home of Airtightness Champions
Please contact us so we can assist with all things related to Airtightness
Liam comes from a construction background. He began being involved in energy efficient construction and airtightness on Lancaster Cohousing and moved into specialising in retrofit soon after, the first of these projects as an Airtightness Champion on Erneley Close in Manchester.
Matt has been involved in sustainable building for over 10 years working with a variety of materials. He has led teams on straw bale builds and timber framed houses, collaborated on an Enerphit project and most recently on retrofitting projects.
Julia is the director of Cotswold-based integrated design company Julia Bennett Architects and is a Passivhaus Designer. Julia Bennett Architects specialise in low carbon and Passivhaus deep retrofits prioritising natural materials, new builds, thermography and PHPP, and ensuring high-quality construction on site to deliver buildings that perform well for years to come. Julia has been working in the low carbon realm for over 30 years and has a Masters Degree in Energy Efficient Building. She is involved with national work and training through The Green Register, AECB and SBUK (Strawbale Building UK). She works in two collectives with installers and airtightness testers focused on collaborating early in projects to leave a legacy of much better buildings. When she’s not working, Julia is helping bring an iconic building back into thriving community use in her home-town, gets outside as much as she can and is getting back to hill-walking.
Mike Neate having initially studied architecture, has specialized for nearly two decades in project construction management of Low Energy Retrofit projects, particularly working on numerous EnerPhit and Passsiv-Haus projects around the UK. Additionally Mike has worked as an Air-tightness contractor, and delivered on many Passiv-Haus and EnerPhit projects. Of which a number of these projects were accomplished while working alongside Paul Jennings and Aldas.
James’s passion is in helping to deliver on all things Aldas. That could be anything from keeping a customer happy to helping with the operations and planning. He also attempts to build websites sometimes (like the one you’re viewing now). No job is to big or small!
Nic is new to ALDAS, coming from a background of Ecology with a particular interest in biodiversity. She is an Ecology graduate with a long standing interest in the environment and human impact.
I am a chartered engineer and internationally respected author, thought leader and communicator with extensive experience of trans-disciplinary working in the field of sustainable buildings and places. I have been a researcher and educator in built environment issues and a sustainability adviser to the private, public and third sector since 1986.