Main Changes

MAIN CHANGES IN THE VENTILATION REQUIREMENTS FOR BUILDINGS IN 2010

  1. This edition of Approved Document F, Ventilation, replaces the 2006 edition and comes into force on 1 October 2010.
  2. The following are the main changes to the legal requirements in the Building Regulations 2010 and the Building (Approved Inspectors etc) Regulations 2010, and in the technical guidance in Approved Document F.
Changes in the legal requirements
  1. All fixed mechanical ventilation systems, where they can be tested and adjusted, shall be commissioned and a commissioning notice given to the Building Control Body.
  2. For mechanical ventilation systems installed in new dwellings, air flow rates shall be measured on site and a notice given to the Building Control Body. This shall apply to intermittently-used extract fans and cooker hoods, as well as continuously running systems.
  3. The owner shall be given sufficient information about the ventilation system and its maintenance requirements so that the ventilation system can be operated to provide adequate air flow.
Changes in the technical guidance
  1. Ventilation provisions have been increased for dwellings with a design air permeability tighter than or equal to 5 m3/(h.m2) at 50 Pa
  2. For passive stack ventilators, the stack diameter has been increased to 125 mm for all room. Use of passive stack ventilation in inner wet rooms has been clarified.
  3. The guidance for ventilation when a kitchen or bathroom in an existing dwelling is refurbished has been clarified.

Reference is made to a new Domestic ventilation compliance guide for guidance on installing, inspecting, testing and commissioning ventilation systems in dwellings. Guidance in Appendices D and E of the 2006 edition of Approved Document F, on installing passive stack ventilators and fans in dwellings, can now be found in Section 2 of the new guide.

MAIN CHANGES MADE BY THE FURTHER 2010 AMENDMENTS

This 2010 edition incorporates changes to reflect the renumbering of regulations in the Building Regulations 2010 and Building (Approved inspectors etc) Regulations 2010. There have been no changes to the requirements in Part F of Schedule 1 to the Building Regulations, but please note the simpler definition of ‘room for residential purposes’.

MAIN CHANGES MADE BY THE 2013 AMENDMENTS

These changes, which apply only to England*, update the guidance on materials and workmanship.