Ecological Building Systems

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Insulating and Achieving Airtightness with Cross Laminated Timber (CLT) Virtual CPD

Cross Laminated Timber (CLT) construction has seen a vast increase in popularity in recent years and is proving a welcome shift from energy intensive traditional construction such as masonry and steel.  UK projects are diverse from multi-storey residential buildings in London to affordable housing projects on the Isle of Mull.

Focusing on optimisation of design and the on-site delivery of high-performing mass timber constructions, this CPD brings together expertise in natural wood fibre insulation as well as intelligent airtightness and windtightness solutions with specialist fixings systems.

Date TBC


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Ideal for

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

Key learning

  • The future of the built environment
  • The environmental credentials of CLT
  • High performance mass timber construction
  • Optimal design & on-site delivery
  • Benefits of wood fibre insulation
  • Airtightness and windtightness solutions
  • Detailing and critical junctions
  • Specialist fixing details for CLT


Who it is for

This training is aimed at professionals from all disciplines of the building design and construction industry who are interested in using natural and sustainable materials to insulation high performance CLT constructions.

This is an open CPD with participants joining from different organisations.  We are offering virtual design reviews with individuals following the CPD to enable you to discuss the details of specific projects with our technical team.

If you have a number of colleagues wanting to attend and a more tailored approach would be preferable, we can provide a dedicated virtual CPD for your team, which can be requested by sending an email to us at info@ecologicalbuildingsystems.com

What you learn

We will look at reasons for using wood, consider the future of the built environment, the potential of this natural resource and our environmental responsibility to build sustainably.

Taking a simple, systematic approach, we will present the perfect method for achieving optimal thermal performance in CLT constructions, using a combination of natural wood fibre insulation, airtightness and windtightness solutions.

We will share lessons learnt from the numerous CLT projects we have been involved with and spend some time looking at examples of detailing and critical junctions.  We will also cover specialist fixing details for wood fibre insulation with CLT.  

Following a summary, we would be pleased to look at how this applies to a practice specific project, with design review and discussion.

What you will do?

You will receive industry leading training from a highly experienced technical professional with the opportunity to ask questions.  We will show examples of different types of wood fibre insulation including rigid boards, flexible batts and loose fill as well as a range of airtightness and windtightness membranes, tapes and accessories.

What happens on the day?

You will receive an email containing the link to join the virtual CPD which will be taking place via Zoom.

There will be a brief introduction, followed by the presentation, with the opportunity to ask questions throughout the presentation via the chat box. We'll answer as many questions as possible at various points during the session and afterwards via email if we run short of time.

As this is an open CPD with participants joining from different organisations, we are offering virtual design reviews with individuals, to enable you to discuss specific projects in more detail with our technical team.  This can be requested by sending an email to us at info@ecologicalbuildingsystems.com

Key points to take away based on feedback from previous attendees

The use of CLT and its benefits in construction

  • Benefit and structural capacity of the innovative insulation and cladding fixings
  • The benefits of adhesive membranes
  • Technical support available from Ecological Building Systems

What you Gain

The UK is now in a unique position to capitalise on the success and momentum of the early CLT pathfinder projects and many more ground-breaking schemes planned.

Having been involved technically with many exemplar projects, some of which are listed below, Ecological can bring an invaluable contribution to specifiers and contractors on the subject:

  • Headquarters of The Woodlands Trust in Grantham
  • The Steiner Academy in Frome
  • Headquarters of furniture company Vitsoe in Leamington Spa

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.

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.

How it can be applied in the future (based on feedback from previous attendees):

  • Consider the use of CLT in building
  • Consider external structural loading

Continued Development 

The content of this CPD provides excellent background knowledge in new build design and delivery of high performance CLT construction.  

We have a dedicated Training Area at our UK office in Cumbria where we offer practical training, giving delegates the see  opportunity to experience the products first hand.  In Ireland, at our Centre of Knowledge training facility, we also offer a range of practical training on a regular basis.

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.


  • Why wood?
  • Keeping it simple with CLT and wood fibre insulation
  • Achieving airtightness and windtightness with CLT
  • Specialist fixing details for wood fibre insulation with CLT
  • Summary
  • Practice specific design review and discussion
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