Research and analysis
Table 4: Descriptions of large-scale system tests undertaken by the BRE and the number of buildings with similar cladding systems, 30 September 2020
Updated 15 October 2020
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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 | 41 | 9 | 29 | 2 | 81 |
| 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 | 13 | 0 | 21 |
| N/A | Category 3 | Not in a systems test | Inferred fail | 60 | 2 | 9 | 5 | 76 |
| N/A | Category 2 | Not in a systems test | Inferred fail | 16 | 0 | 0 | 2 | 18 |
| 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 | 151 | 45 | 102 | 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 | 140 | 2 | 6 | 1 | 149 |
| Total number of buildings with ACM cladding systems unlikely to meet Building Regulations | Not set | Not set | Not set | 291 | 47 | 108 | 10 | 456 |
| 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 | 296 | 48 | 113 | 11 | 468 |