How to retrofit walls externally with natural insulation

Date: Wednesday 13th July 2022   Time: 10:00-11:30   Location: Online

Join Woodknowledge Wales and the ASBP’s Natural Fibre Insulation Group for an online ‘how-to’ webinar on the use of natural insulation as a solution to the external insulation of walls.

The UK has 28.5m homes, and some of the oldest homes in Europe. Wales has 1.35m or 5% of UK homes and almost a third were built before 1919. Most are of solid wall construction and nearly half of them have no wall insulation.

This has to change. But insulating walls externally in a way that protects both the health of the occupants and the building is not straightforward. The purpose of this ‘how-to’ event is to introduce the use of natural insulation as a solution to the external insulation of walls.

Audience: Housing development and asset management professionals, architects, contractors, students

Format: Online (via Zoom)

Speakers: Nick Heath (NDM Heath Ltd), Mark Lynn (Thermafleece), Simon Ayres (Lime Green)


  • 10.00 Welcome from Woodknowledge Wales
  • 10:10 What are the challenges of external wall insulation? – Nick Heath (NDM Heath Ltd)
  • 10.30 How does natural insulation help? – Mark Lynn, Thermafleece & Chair of the Natural Fibre Insulation Group
  • 10.50 How do you install it? – Simon Ayres, Lime Green
  • 11.10 Q&A
  • 11.30 Close

This event is part of Trawsnewid Menter Pren | Transforming Timber Enterprise – an event series providing inspiration, knowledge and skills for a zero-carbon built environment.

The transformation to zero carbon creates new and exciting opportunities for both business and skills development. Our aim in this series of expert led events is to inspire organisations in general and young people in particular to better understand and embrace the opportunities presented by the rapid transformation to a zero-carbon built environment. These ‘how-to’ events cover essential aspects of both new build and retrofit, and major on the better understanding of the use of timber products and the forests from which they are produced.


This online event is free to attend but you must register via Eventbrite HERE.

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