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.

  • Diagram 1 Provisions for background ventilation Diagram 1 Provisions for background ventilation
  • Diagram 2a Ventilation systems Diagram 2a Ventilation systems
  • Diagram 2b Single sided ventilation Diagram 2b Single sided ventilation
  • Diagram 3 Two habitable rooms treated as a single room for ventilation purposes Diagram 3 Two habitable rooms treated as a single room for ventilation purposes
  • Diagram 4  A habitable room ventilated through a conservatory Diagram 4 A habitable room ventilated through a conservatory

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    Diagram 4  Spaces for access Diagram 4 Spaces for access
  • Window dimensions Window dimensions
  • Diagram C1 Ground floor flat plan Diagram C1 Ground floor flat plan
  • Diagram C2 Semi-detached ground floor plan example Diagram C2 Semi-detached ground floor plan example
  • Diagram C3 Semi-detached house first floor plan example Diagram C3 Semi-detached house first floor plan example
  • ExampleC1 Background ventilators and intermittent extract fans (this is based on Table 5.2a) Example C1 Background ventilators and intermittent extract fans (this is based on Table 5.2a)
  • Example C2  Passive stack ventilation (this is based on Table 5.2b) Example C2 Passive stack ventilation (this is based on Table 5.2b)
  • Example C3  Continuous mechanical extract (this is based on Table 5.2c) Example C3 Continuous mechanical extract (this is based on Table 5.2c)
  • Example C4 Continuous mechanical supply and extract with heat recovery (this is based on Table 5.2d) Example C4 Continuous mechanical supply and extract with heat recovery (this is based on Table 5.2d)
  • Example C5 Background ventilators and intermittent extract fans(this is based on Table 5.2a) Example C5 Background ventilators and intermittent extract fans(this is based on Table 5.2a)
  • Example C6 Passive stack ventilation (this is based on Table 5.2b) Example C6 Passive stack ventilation (this is based on Table 5.2b)
  • Example C7  Continuous mechanical extract (this is based on Table 5.2c) Example C7 Continuous mechanical extract (this is based on Table 5.2c)
  • Example C8 Continuous mechanical supply and extract with heat recovery (this is based on Table 5.2d) Example C8 Continuous mechanical supply and extract with heat recovery (this is based on Table 5.2d)
  • Table 5.1a Extract ventilation rates Table 5.1a Extract ventilation rates
  • ]Table 5.1b Whole dwelling ventilation rates Table 5.1b Whole dwelling ventilation rates

  • Table 5.2a System 1- background ventilators and intermittent extract fans (for additional Information see Table 5.3 and worked examples c1 and C5 in Appendix C) Table 5.2a System 1- background ventilators and intermittent extract fans (for additional Information see Table 5.3 and worked examples c1 and C5 in Appendix C)
  • Table 5.2a System 1- background ventilators and intermittent extract fans (for additional Information see Table 5.3 and worked examples c1 and C5 in Appendix C) Table 5.2a System 1- background ventilators and intermittent extract fans (for additional Information see Table 5.3 and worked examples c1 and C5 in Appendix C)
  • Table 5.2b System 2- Passive Stack Ventilation (PSV) (for additional information see table 5.3 and  worked examples C2 and C6 in Appendix C) continued Table 5.2b System 2- Passive Stack Ventilation (PSV) (for additional information see table 5.3 and worked examples C2 and C6 in Appendix C) continued
  • Table 5.2b System 2- Passive Stack Ventilation (PSV) (for additional information see table 5.3 and  worked examples C2 and C6 in Appendix C) continued Table 5.2b System 2- Passive Stack Ventilation (PSV) (for additional information see table 5.3 and worked examples C2 and C6 in Appendix C) continued
  • System 2- Passive Stack Ventilation (PSV) (for additional information see table 5.3 and  worked examples C2 and C6 in Appendix C) continued 2 Table 5.2b System 2- Passive Stack Ventilation (PSV) (for additional information see table 5.3 and worked examples C2 and C6 in Appendix C) continued 2
  • Table 5.2c System 3- Continuous mechanical extract (MEV)(for additional information see Table 5.3 and worked examples C3 and C7 in Appendix C) Table 5.2c System 3- Continuous mechanical extract (MEV)(for additional information see Table 5.3 and worked examples C3 and C7 in Appendix C)
  • Table 5.2c System 3- Continuous mechanical extract (MEV)(for additional information see Table 5.3 and worked examples C3 and C7 in Appendix C) Table 5.2c System 3- Continuous mechanical extract (MEV)(for additional information see Table 5.3 and worked examples C3 and C7 in Appendix C) continued
  • Table 5.2d System 4- Continuous mechanical supply and extract with heat recover (MVHR)(for additional information see Table 5.3 and worked examples C4 and C8 in Appendix C) Table 5.2d System 4- Continuous mechanical supply and extract with heat recover (MVHR)(for additional information see Table 5.3 and worked examples C4 and C8 in Appendix C)
  • Table 5.2d System 4- Continuous mechanical supply and extract with heat recover (MVHR)(for additional information see Table 5.3 and worked examples C4 and C8 in Appendix C) continued Table 5.2d System 4- Continuous mechanical supply and extract with heat recover (MVHR)(for additional information see Table 5.3 and worked examples C4 and C8 in Appendix C) continued

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<em>Table 5.3 Performance Test Methods Table 5.3 Performance Test Methods
  • Table 6.1a Extract ventilation rates Table 6.1a Extract ventilation rates
  • Table 6.1b Whole building evntilation rate for air supply to offices Table 6.1b Whole building evntilation rate for air supply to offices
  • Table 6.2a ventilation for offices with natural air supply- ventilation purposes Table 6.2a ventilation for offices with natural air supply- ventilation purposes
  • Table 6.2b Ventilation for offices with natural air supply- location of ventilators in rooms Table 6.2b Ventilation for offices with natural air supply- location of ventilators in rooms
  • [caption id="attachment_7898" align="alignnone" width="943"]Table 6.2c Ventilation for offices with natural air supply- controls for ventilators in rooms Table 6.2c Ventilation for offices with natural air supply- controls for ventilators in rooms[/caption]

  • Table 6.3 Ventilation of other buildings and spaces Table 6.3 Ventilation of other buildings and spaces
  • Table 6.3 Ventilation of other buildings and spaces Table 6.3 Ventilation of other buildings and spaces
  • Table A 1 Surface Water Activity Table A 1 Surface Water Activity
  • Table A2 Indoor air relative humidity Table A2 Indoor air relative humidity
  • Table D1 Guidance on ventilation intake placement for minimising ingress of pollutants Table D1 Guidance on ventilation intake placement for minimising ingress of pollutants