This practical, hands-on training programme is designed to develop Airtightness Champions—specialist professionals with the skills and understanding to deliver, manage, and test airtightness of buildings to high-performance standards. Delivered by ALDAS, the UK’s leading airtightness consultancy, this 2 or optional application of practice 3-day course combines technical presentations, product demonstrations, and practical airtightness testing exercises to ensure participants gain both theoretical knowledge and real-world competence.

With net zero targets, Building Regulations Part L 2022, and AECB / Passivhaus principles driving higher airtightness standards, this training ensures construction professionals understand how to design, manage, and achieve robust airtightness in newbuild projects.

Who Is This Course For?

Site Managers & Project Managers
Tradespeople involved in airtightness installation
Retrofit Assessors & Coordinators
Energy Consultants & Designers
Building Inspectors & Quality Assurance Personnel

What You’ll Learn

Introduction to Airtightness – Why it matters for energy efficiency, comfort, and compliance.
Understanding Airtightness Products – Membranes, tapes, grommets, airtight OSB, paints, and sealing materials.
Delivering Airtightness – ALDAS 12-Step Approach to robust airtightness delivery.
Airtightness Testing – Equipment, processes, and interpreting results.
Leakage Checking – Smoke testing, thermography, vane anemometers, and acoustic methods.
Managing Quality – Developing airtightness checklists, drawings, and site processes.
Real-World Case Studies – Lessons learned from high-performance newbuild and retrofit projects across the UK.

Course Format & Duration

2 Days In-Person Training (optional third day for additional site testing – subject to project requirements).
Location: Delivered at University of Wales Trinity Saint David, Swansea and at live projects.

Practical Elements Include:
  • Hands-on product demonstrations and installation techniques.
  • Full airtightness testing of test pods and/or real buildings.
  • Real-time leakage investigation using smoke, thermal, and airflow testing tools.
Delivered By:

ALDAS – Jennings Aldas (2019) Limited
Training led by Paul Jennings, one of the UK’s most experienced airtightness consultants, supported by Mischa Hewitt, a specialist in low-energy building performance.

Why This Matters

With airtightness playing a critical role in energy efficiency, indoor air quality, and achieving regulatory compliance, this training equips participants with the skills to deliver right-first-time airtightness, avoiding costly rework and helping projects meet net zero and Passivhaus standards.

Course Fee:

£1450 (no VAT) pp for up to 12 participants. 

Booking & Funding

If you are a CITB registered company you can apply to them for 70% funding towards the cost of this course.  Please contact you local  CITB advisor;

Jon Davies – Swansea & South Powys
Ross Baker – RCT & NPT
Sheila Holmes – Carmarthenshire & Pembrokeshire
John Evans – Bridgend, Blaenau Gwent, Caerphilly & Merthyr
Ross Baker – Cardiff, Torfaen, Monmouthshire & Newport

For organisations not registered with CITB you can apply for 50% funding through the Welsh Government’s Flexible Skills Programme.  

If you have any questions about this course please contact Julie on 01792 481273 or julie.evans@uwtsd.ac.uk.

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