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The Green Register (event 3 of 3) on Achieving Airtightness How and Why

Airtightness aims to eliminate any unintended gaps or cracks in the external fabric of the building. Ventilation focuses on replacing the stale indoor air with fresh outdoor air to meet the occupant’s needs and create a healthy, comfortable living environment.

28th October

Date and time

28th October 2020
9:00am - 12:00pm


Interactive Online Training


A fabric first approach to healthier, more energy efficient building is the focus for a series of 3 events we're running during with The Green Register during October.

This is the final event in the series looking at the "build tight and ventilate right" solution to airtightness!  Buildings that achieve higher levels of airtightness tend to be built and executed to a much higher level.  While airtightness is essential to ensure optimal thermal performance and reduce condensation risk, it must also be combined with an effective ventilation strategy, be it by passive or mechanical means. 

This event will focus on solutions for achieving higher performance, more durable, healthy buildings and will include a detailed case study of a recent new build Passivhaus and a film demonstrating an airtightness practical session showing how to install membranes, tapes and other sealing accessories.

This live interactive training session will run from 9am to 12noon (BST) with input and involvement from a variety of technical experts with the opportunity to ask questions during the sessions.


  • Why airtightness is now recognised as a key element in realising higher performance more durable healthy buildings.
  • Case Study on the building of a new home in Ireland to Passivhaus levels of performance.
  • Practical Airtightness Installation demonstration video showing the installation of airtighness membranes, tapes and seals with lot of hints and tips for all the key junctions for an effective airtight building.


Niall Crosson

Niall Crosson

Group Technical Manager (BTech, MEngSc, MIEI, CEPHC)

Niall is the Group Technical Manager for Ecological Building Systems and was also the company’s first employee. Niall holds a first class honours degree as a Bachelor of Technology and a Masters in Eng.Sc. Niall is a certified Passivhaus Consultant and has provided technical guidance on many award winning low energy projects in Ireland and the UK, and has authored or co-authored several chapters in both the Passivhaus Handbook and the Passivhaus Designers Manual. Niall is also on the board of directors of the Irish Green Building Council and provides guidance on several national standards committees.  Along with this, Niall has contributed to several construction publications including The Journal of the RIAI.

Dr Peter Rickaby

Dr Peter Rickaby

Guest Speaker

Peter Rickaby trained as an architect at Cambridge University and holds a doctorate in energy studies from the Open University. He was a Director of Rickaby Thompson Associates Energy + Sustainability Consultants for thirty-five years, and is now semi-retired, works as an independent consultant and helps to run the UK Centre for Moisture in Buildings, at UCL.

He has written, co-authored or edited most of the published technical guidance on energy efficiency in housing in the UK. He contributed to three work-streams of the Each Home Counts review and was a member of the Implementation Board. Peter Chairs the BSI Retrofit Standards Task Group, which is charged with developing a framework of technical standards for retrofit, and he is Technical Author of PAS 2035 Retrofitting Dwellings for Improved Energy Efficiency: Specification and Guidance.

Fintan Wallace

Fintan Wallace

Architectural Technologist (MEngSc BTech, MIEI, CEPHC, CEPHT)

Fintan Wallace is an Architectural Technologist at Ecological Building Systems. Graduating from Dublin Institute of Technology in 2011 with a B.Sc (Hons) in Architectural Technology, it was here in D.I.T’s Bolton Street where Fintan developed a strong interest in low energy and Passivhaus design. From here he continued his studies becoming both a Certified European Passivhaus designer and tradesperson. Fintan has travelled to Baden Württemberg in Germany to study passive housing and sustainable energy technology, gaining significant knowledge regarding the use of natural insulations in timber frame and solid wall constructions. Fintan has been involved extensively in a deep energy retrofit of a property to the Enerphit standard in the west of Ireland and now advises on numerous projects throughout the UK for newbuild and retrofit.