External wall construction
PAS 9980:2022, Fire risk appraisal of external wall construction and cladding of existing blocks of flats – Code of practice, published by BSI Standards Limited in 2022, defines an external wall construction as a: ‘range of different forms of construction used for the entirety of the external walls of a building, from inside to outside, including both internal and external finishes.’
It states: 'In the context of this PAS, external wall construction includes any cladding on the external wall (whether installed as a complete system at the time of construction or retrospectively through, for example, renovation) as well as the underlying wall construction, whether loadbearing or not.’
See also: External wall.
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