P2-7
Response
Accepted
Reconsider compartmentation in Approved Document B
Recommendation
New materials and methods of construction and the practice of overcladding existing buildings make the existence of effective compartmentation a questionable assumption and we recommend that it be reconsidered when Approved Document B is revised. (113.13)
Published Evidence Summary
The following publicly available evidence relates to this recommendation:
- The government accepted this recommendation in February 2025, stating it will be addressed through the Approved Document B review (Government Response to Grenfell Tower Inquiry Phase 2 Report, MHCLG, February 2025).
- The government's annual report stated compartmentation guidance is being addressed through the ongoing Approved Document B review, with a six-member expert panel appointed on 31 July 2025 (Annual Report on Progress, MHCLG, February 2026).
- The government's annual report stated compartmentation guidance is being addressed through the ongoing Approved Document B review, with a six-member expert panel appointed on 31 July 2025 (Annual Report on Progress, MHCLG, February 2026).
Sources
How was this evidence gathered?
Evidence searched by Claude (Anthropic) on 10 Apr 2026
Checked data held on this site (government responses, progress updates, independent evidence)
Jurisdiction
England
Response
Accepted
Response
Accepted
Accepted
UK Government
26 Feb 2025
The government accepts this recommendation. We will address this through the response to recommendation 5.
Progress Timeline
Official Report
01 Feb 2026
Compartmentation guidance addressed through ongoing Approved Document B review by Building Safety Regulator. Six-member expert panel appointed 31 July 2025 guiding review. (Covers Recommendations 5, 6, 7, 8, 9, 11, 12.)
Responsible Bodies
UK Government
Primary
Themes & Tags
Recommendation age
1.7 yrs
Last formal update
01 Feb 2026