Research and analysis

Table 5: Descriptions of large-scale system tests undertaken by the BRE and the number of buildings with similar cladding systems – England, 31 May 2019

Updated 10 June 2019
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Large-scale system test ACM cladding category tested Insulation type tested Result Private Buildings Local authority Housing association Publicly-Owned Buildings Total Buildings
1 Category 3 Foam Insulation Fail 42 9 29 2 82
2 Category 3 Mineral Wool Fail 22 33 48 0 103
3 Category 2 PIR foam Fail 4 1 3 0 8
4 Category 2 Mineral Wool Pass 5 1 5 1 12
5 Category 1 Foam Insulation Pass 0 0 0 0 0
6 Category 1 Mineral Wool Pass 0 0 0 0 0
7 Category 2 Phenolic Foam Fail 8 0 14 0 22
N/A Category 3 Not in a systems test Inferred fail 53 2 12 5 72
N/A Category 2 Not in a systems test Inferred fail 18 0 0 2 20
N/A Category 1 Not in a systems test Inferred pass 0 0 0 0 0
Subtotal: Total number of buildings failed BRE test Not set Not set Not set 147 45 106 9 307
Confirmed by local authorities as having similar ACM cladding systems to those which have failed large-scale system tests Not set Not set Not set 119 1 6 0 126
Total number of buildings with ACM cladding systems unlikely to meet Building Regulations Not set Not set Not set 266 46 112 9 433
Subtotal: Total number of buildings passed BRE test Not set Not set Not set 5 1 5 1 12
Total number of buildings with confirmed ACM cladding systems Not set Not set Not set 271 47 117 10 445