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Ecological Building Systems

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Virtual Airtightness & Active Moisture Management using Intelligent Vapour Checks

Airtightness is critical when creating a low energy building. The benefits are significant and numerous, including structural durability and longevity, reduced energy consumption, improved levels of comfort and a healthy environment for occupants.  Since we spend around 90% of our time indoors and most building failures are caused by moisture related issues, the need for active moisture management, lifetime building durability and a healthy living environment become more crucial than ever. This is covered in detail in our Airtightness and Moisture Management CPD.

Airtight roof build-up

Request CPD at a date that is convenient for you and your team.

Ideal for

  • Architects
  • Specifiers
  • Building Surveyors
  • Contractors
  • Consultants (Energy, Passivhaus)
  • Students
  •  Anyone interested in sustainable, energy efficient building

Key learning

  • What is Airtightness and why does It matter?
  • Designing for Airtightness from the outset (Fabric First Approach)
  • Moisture Management to avoid structural damage and damp
  • Best practice techniques to achieve long-lasting airtightness
  • Practical airtightness installation techniques
  • Airtightness hints and tips from world leading experts
  • How to “Build Tight & Ventilate Right”


Who it is for

This training is aimed at professionals from all disciplines of the building design and construction industry who are interested in taking an ecological and sustainable fabric first approach to creating better buildings.

What you learn

You will learn what airtightness is (and isn’t), why it matters, the causes and effects of poor moisture management and current vs. future airtightness standards.  This CPD training highlights the need for a collaborative approach and for a change in attitude in order to design and construct buildings that are more durable, healthy and fit for the future.

The CPD training includes how to design for airtightness and looks at the pros and cons of different commonly used materials on site.  It explains the crucial “Red Line” rule to define the air barrier and the need for diligent attention to detail and co-operation between all trades on site.

We will look at moisture levels on site, the movement of moisture through various materials and the associated consequences caused by this moisture.  We also look at how choosing fit-for-purpose materials is essential in ensuring sustainable buildings and a healthy comfortable living environment is achieved.

What you will do

You will receive industry leading training from highly experienced technical professionals.  We can incorporate a specific relevant project based on information and drawings provided in advance.  There will also be an opportunity to handle product samples and ask questions.  

What happens on the day

Our technical professional will generally arrive at your offices around 30 minutes before the CPD starts to get set up. A dedicated meeting room with projector/screen would be helpful, although not essential, and we will bring a laptop to present from.  The presentation will start at the time you have chosen and generally last around an hour. Following the presentation, our technical professional can stay behind (by prior arrangement only) to discuss specific projects, review drawings and make recommendations etc.  Please let us know in advance if you would like this additional free service. 

What you will gain with this CPD

  • designing for airtightness from the outset
  • specifying the most effective products
  • ensuring robust airtightness installation on site
  • how to ensure buildings are sustainable, durable and provide comfortable healthy economic indoor living environments for future generations.

Points Gained

This CPD is a 1 hour stand-alone CPD providing 1 point towards maintaining your professional standard.  This can be doubled with an additional 1-2 hour related activity (see RIBA website for more details).

Sustainable architecture is a rapidly developing area and is a RIBA core curriculum topic.  There is a requirement for a minimum of 2 hours to be spent on each of the core 10 topics.

Continued Development 

The content of this CPD is a great background knowledge for the creation of long-lasting energy efficient sustainable buildings.  Our other CPDs develop these concepts for different types of insulation and building methods.  

We have a dedicated Training Area at our UK base in Cumbria where we offer practical Airtightness training, giving delegates the opportunity to experience Airtightness Installation first-hand on our life-size timber frame demo wall.

In Ireland, at our Centre of Knowledge training facility, we also offer airtightness training most months of the year.

Given the current Covid-19 situation, we have temporarily suspended our practical training in both the UK and Ireland but we're reviewing this on a regular basis and hope it won't be too long before we can offer this again.


  • What is airtightness (and what it’s not)
  • Airtightness standards from legal minimum to best in class
  • Consequences of a lack of Airtightness and common failure areas
  • Principles behind Insulation
  • How to Implement an Airtightness strategy from the design stage to the final test on site
  • Moisture management and intelligent membranes
  • Intelligent solutions for achieving Airtightness including onsite details
  • Putting Airtightness at the forefront of building design (why and how)
  • Support we provide following this CPD
  • Introduction to other CPDs that support low energy sustainable 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.

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