ACP manufacturer provided outdated classification reports for its cladding panels (Lane, 2018c, 11.6.25)

PIR insulation manufacturer provided test results irrelevant to the Grenfell Tower facade system (Lane, 2018c, Table 11.11)

Phenolic insulation manufacturer provided the test results of an old product to market the new product with different thermal properties (Opus 2 International - Official Court Reporters, 2020a)

Test documents, including installation methods provided for cavity barriers, were irrelevant to the application at the Grenfell Tower (Lane, 2018c, 11.23.11)

Designers failed to apply the required level of responsibility and skill (Hyett, 2020a, 2.3.60)

Design work contained design and specification errors, false information in drawings, and failure in documentation control (Hyett, 2020b, 6.1.9)

Selected materials were not compliant with the fire safety requirements of Approved Document B (ADB) as follows

• 1.Cassette panels (Lane, 2018c, 11.6.31–11.6.34)

• 2.PIR insulation installed on the spandrels and columns (Lane, 2018c, Table 11.8)

• 3.Phenolic insulation installed on the spandrels (Lane, 2018c, 11.14.12)

PIR insulation fixed behind window reveals (Lane, 2018c, Table 11.10)

Cavity barriers at the bottom and top of the windows (Opus 2 International - Official Court Reporters, 2020b, column 29) and in the facade columns (Opus 2 International - Official Court Reporters, 2020b, column 31) were not installed

The constructability of the cavity barriers in the facade columns was neglected (Opus 2 International - Official Court Reporters, 2020b, column 34)

Construction drawings provided a noncompliant specification of cavity barriers (Lane, 2018c, 11.20.104)

Some of the cavity barriers required by ADB were not installed, specifically those required around window openings (Lane, 2018c, 11.23.9)

Installation of several cavity barriers was defective (Lane, 2018e, 10.3.44)

PIR insulations installed on the window reveals were not shown in the drawings (Lane, 2018c, 11.15.6, 11.15.7)

Styrofoam insulated core panels around the kitchen vents were not according to the documented specifications (Lane, 2018c, 11.16.15)

The design information deleted from a design manager's laptop was lost because no record was stored on the company's server (Anketell-Jones, 2019)