In my last post I introduced a Certificate of Approval, issued in 2012 by Exova, trading as Warrington Certification, for a combustible FR grade ACM panel. According to the government’s post-Grenfell interpretation of Approved Document B2, 12.7, this certificate should not have been issued, since the panels fail to meet the limited combustibility requirement of that paragraph.
The certificate bore on every page the signature of Sir Ken Knight, who is Chair of the Grenfell Tower Expert Panel. This body claimed on 30 June 2017 that the Buildings Regulation guidance requires the ACM core to be of limited combustibility. The text of the Approved Document guidance on cladding has remained unchanged since 2007. It follows that the Expert Panel must be of the view that the certificate was issued in error.
Continue reading Grenfell Tower: Exova’s approval in 2012 of the use of combustible ACM for high rise cladding