Ventilation: Approved Document F, Volume 1 — Dwellings

O N L I N E V E R S I O N F1(1) Refurbishing a kitchen or bathroom in an existing dwelling NOTE: If a combustion appliance is installed in a kitchen or bathroom where building work is carried out, Part J of the Building Regulations must be considered. 3.30 Where building work is carried out in a kitchen or bathroom, any existing fans (including cooker hoods, where they extract to the outside) should be retained or replaced. Appropriate checks should be made to determine whether any retained ventilation devices are working correctly. 3.31 If there is no ventilation system in the original room, it is not necessary to provide one in the refurbished room. However, additional ventilation may be necessary if refurbishment work is likely to make the building less compliant with the ventilation requirements of the Building Regulations than it was before the work was carried out. The guidance in paragraphs 3.6 to 3.13 should be followed for refurbishment that includes energy efficiency measures and paragraphs 3.14 to 3.16 should be followed for window replacements. 3.32 If an extractor fan or cooker hood is replaced and it uses the existing cabling, this does not need to be notified to a building control body (see section 1(a) of Schedule 4 to the Building Regulations). 27 Building Regulations 2010 Approved Document F Volume 1, 2021 edition O N L I N E V E R S I O N