Written question asked by Stephen Timms (Labour) on Monday, 26 April 2021, in the House of Commons. It was due for an answer on Thursday, 29 April 2021 (named day). It was answered by Christopher Pincher (Conservative) on Thursday, 29 April 2021 on behalf of the Ministry of Housing, Communities and Local Government.

Buildings: Fire Prevention

Question: To ask the Secretary of State for Housing, Communities and Local Government, what estimate he has made of the number of buildings completed in England and Wales since 14 June 2017 that include (a) Celotex RS5000 insulation and (b) Kingspan K15 insulation.

Answer: The Government banned the use of combustible materials on the external walls of high-rise residential buildings in 2018. The ban was introduced to remove any uncertainty for building developers, designers, contractors and suppliers as to what materials are classified for use in the external walls of buildings.

The ban limits materials that can be used to those achieving the two highest classifications. We expect all cladding materials to have been subject to the relevant safety checks and approved before the material can be used on a building. We do not currently hold estimates of the number of buildings completed in England and Wales that include Celotex RS5000 insulation and Kingspan K15.

Secondary information