Develop new test methods for evacuation strategy assessments
Assessing whether an external wall system can support a particular evacuation strategy is difficult because the necessary information is not always available. We therefore recommend that steps be taken in conjunction with the professional and academic community to develop new test methods that will provide the information needed for such assessments to be carried out reliably. (113.17)
- The government's annual report stated collaboration continues on external wall testing methods as part of the statutory guidance review (Annual Report on Progress, MHCLG, February 2026).
How was this evidence gathered?
Response
Accepted
Response
AcceptedThe government accepts this recommendation. We will work with the professional and academic community to address this recommendation through the ongoing Approved Document B review led by the Building Safety Regulator which will consider any necessary changes to the guidance for external walls. Research in this area will inform any future evolution of changes to or introduction of new testing methods. The government will look to the construction sector to demonstrate that the test methods used are effective and give a genuine indication of the likely behaviour of an external wall system in the event of a fire.
Progress Timeline
Professional and academic collaboration continues on external wall testing methods development. Part of statutory guidance review underway examining Approved Documents structure. (Covers Recommendations 5, 6, 7, 8, 9, 11, 12.)