UP STRAW Safety of strawbale walls in the event of fire

Written by esba

Report prepared for SNaB and UpStraw project. June 2020.

Reaction to fire: clay and lime plastered strawbale wall systems have achieved ratings of

B-s1, d0.

Resistance to fire: clay and lime plastered strawbale walls (all incorporating timber elements in differing ways) have
achieved formal test results of 120 to 135 minutes without failure (equivalent to REI 120 to 135).

LINK to Report

About the author


The European Straw Building Association is an independent European association, devoid of any profit making motive. The object of the Association is to promote and develop the use of straw, as a sustainable way of building in all the senses of the term “sustainable”: renewable, ecological, healthy, energy and climate efficient, social and economic.
The Association is a federation composed of organisations and people particularly concerned with the use of straw in buildings.