Natural fibre insulation products and systems are derived from natural materials such as wood fibre, hemp, straw, cellulose, wool, cotton and flax

Latest Briefing Papers

Authored by experienced ASBP board members and technical staff. Peer-reviewed by members of the ASBP Natural Fibre Insulation Group.

Environmental Product Declarations (EPD) - Introduction

December 2019

Environmental Product Declarations (EPD) -
How to Use

January 2020

Environmental Product Declarations (EPD) -
Where to Find

March 2020

Airtightness, Vapour Control and Breathability

August 2019

An Introduction to Breathability

March 2018

Health and wellbeing benefits of natural fibre insulation products

March 2017

The Multiple Roles of Insulation

December 2018

Natural Fibre Insulation Group

The Natural Fibre Insulation Group (NFIG) is a collective of ASBP members who are the leading manufacturers and suppliers of natural fibre insulation in the UK.

The purpose of the group is to work collaboratively to better communicate the many benefits of natural insulation products and systems.

Group activities include exhibiting at popular tradeshows (Futurebuild, UK Construction Week, London Build), hosting CPDs/events, publishing peer-reviewed briefing papers and journal/magazine articles, and more.

The group is open to ASBP members who are involved in the production, marketing and/or sale of natural fibre insulation in the UK.

The number of members in the group is not limited but all members should be able to work in good faith with others in the sector.

Contact Richard Broad at to find out more.


More than just U-values...

Insulation profoundly influences the performance of our buildings and has multiple roles:

  • Thermal
  • Acoustic
  • Fire protection
  • Health
  • Comfort
  • Buildability
  • Durability
  • Sustainability

Balanced consideration of this multi-functionality often makes natural fibre insulation the superior choice.

Featured Events & Resources

Online Wood Fibre Insulation Course

Free online wood fibre insulation course for architects, builders and self-builders.

Created by Back to Earth, the course covers how to specify, source and use wood fibre insulation effectively.

ASBP Healthy Buildings Conference & Expo 2020

Members of the Natural Fibre Insulation Group exhibited at the ASBP’s 4th Healthy Buildings Conference and Expo, where we addressed the climate emergency and discussed how to accelerate the delivery of net zero carbon buildings that are healthy for occupants as well as our planet.

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