The outcome of the UK government’s in-depth assessment of the use of different cladding materials in the wake of the Grenfell tragedy has confirmed that timber cladding remains compliant with the new Building Regulations (in England), where the upper floor level of a building is less than 18m above ground.

For any building where the upper floor level is less than 18m above external ground level

  • where faces are more than 1000mm from boundary there is no requirement for flame retardant treatment, except for assembly or recreation buildings of more than one storey, where faces facing boundary must meet class Euroclass C-s3, d2 or better up to 10m above ground level or above any part of the building to which the public have access.
  • the faces less than 1000mm from boundary must meet class Euroclass B-s3, d2 or better.

For any building, other than those stipulated under Regulation 7(2), where the upper floor level is more than 18m above external ground level

  • the faces less than 1000mm from boundary must meet class Euroclass B-s3, d2 or better.
  • the faces more than 1000mm from boundary must meet class Euroclass C-s3, d2 or better up to 18m above ground level and Euroclass B-s3, d2 or better for any dimension over 18m above ground.

Timber cladding that meets Euroclass B (and C) is widely available.

Read the full factsheet here