Fire-resisting timber doorsets

Fire-resisting timber doorsets

Date Published

5 September 2022

Document Type




Fire-resisting timber doorsets

Fire-resisting doorsets, as distinct from single ‘fire door’ leaves, are precisely designed and engineered component sets required to perform three main functions: Protect escape routes from the effects of fire (including smoke) so occupants can leave safely (includes lofts and conversions), protect the contents and/or structure of the building by limiting the fire spread (an insurance requirement), and permit fire fighting.

Key Information

Each component plays a critical role in the doorset’s fire resistance. Unauthorised changes in specification may impair the performance of the whole doorset. Any changes from the tested specification should only be made with the approval of an appropriate expert authority, such as a UKAS-accredited testing laboratory.

Case studies

St. Clare’s is a private sixth-form college which provides courses in the International Baccalaureate. It was founded in 1953 and has 375 students, most of whom are boarders. The college is housed in a number of discreet “villas” along the Banbury Road, Oxford, one of which, a fine detached Grade II listed Arts and Crafts villa, was built in 1903 to the design of the architect Henry Thomas Hare, a former RIBA president.

Dungeness Beach in Kent is the largest area of shingle in Europe – 1,600 hectares of it. The harsh and dramatic landscape, dominated by the bulk of Dungeness B power station and dotted with a cottage or a fisherman’s weekend hut, is an architectural conservation area and has been designated a Site of Special Scientific Interest (SSSI) to preserve its unique ecology of grasses and shingle plants.