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What Are Part F Building Regulations? A Guide To Understanding New Ventilation Requirements

Written by Coastal Group ,
Published on June 17, 2022 at 2:01:29 PM PDT June 17, 2022 at 2:01:29 PM PDTth, June 17, 2022 at 2:01:29 PM PDT

The updated Part F Building Regulations 2022 Documents are effective from 15th June 2022, consisting of two volumes.

  • Approved Document F: Volume 1 applies to dwellings
  • Approved Document F: Volume 2 applies to buildings other than dwellings

Coastal have covered some of the Frequently Asked Questions in the video below. For further information please consult the Governments Frequently Asked Questions on Part F Regulations Document.



With Part F affecting both new build and existing properties, it’s important to understand what this means for installers and window manufacturers.

As an industry leading hardware provider, Coastal Group have released some guidance on the updated Part F regulations. The below documentation helps educate window manufacturers and installers on why the regulations have been updated, key changes which may affect manufacturing processes and how you can be Part F compliant.


Why Is Ventilation Important?

In recent years buildings have become much more energy efficient, reducing heat loss by improving air tightness. However, this can cause other issues through inadequate ventilation.

Buildings which are poorly ventilated allow a build-up of water vapour which can lead to condensation and subsequently mould growth. Poor ventilation is also less effective in removal of airborne pollutants, having a negative effect on people’s personal health and wellbeing.

The importance of having well ventilated buildings is particularly relevant today, demonstrated by the impact of the airborne virus COVID-19, spreading through the air by droplets that are exhaled by an infected person.

What are Part F Building Regulations? An Overview

The main objective of Part F regulations is to protect the health of occupants of the building by providing adequate ventilation, removing stale indoor air from a property and replacing it with fresh air from outdoors.

Key points of the new Part F 2022 Regulations are summarised below:

  • The required level of background ventilation has increased significantly, and multiple trickle vents may be required to meet minimum airflow requirements. This is measured by ‘Equivalent Area’ (AE).
  • The Part F 2022 regulations affect both new build and existing properties.
  • Application of night vent does not count as a form of background ventilation on the Part F regulations.
  • If the existing windows have background ventilators, the replacement windows should include ventilators that are no smaller than background ventilators in the original and be controllable by the occupant.
  • The 2010 regulations were dictated by room types, occupancy levels and floor area of the property. The 2022 regulations are simpler and based on a per room amount (follow guidance in table below for reference).
ROOMMinimum Equivalent Area (EA) For dwellings with multiple floorsBackground Ventilators for Single Story Dwellings
Habitable Rooms (2/3)8,000mm210,000mm2
Kitchen (2/3)8,000mm210,000mm2
Utility Room No minimumNo minimum
Bathroom (4) 4,000mm24,000mm2
Sanitary Accommodation (4) No minimumNo minimum

Notes

  1. The use of this table is not appropriate in any of the following situations and expert advice should be sought
    • If the dwelling has only one exposed façade
    • If the dwelling has at least 70% of its openings on the same façade
    • If a kitchen has no windows or external façade through which a ventilator can be installed.
  2. Where a kitchen and living room accommodation are not separate rooms (i.e open plan), no fewer than three ventilators of the same equivalent area as for other habitable rooms should be provided with open-plan space.
  3. The total number of ventilators installed in a dwelling’s habitable rooms and kitchens should be no fewer than five, expect in one-bedroom properties, where there should be no fewer than four.
  4. If a bathroom has no window or external façade through which a ventilator can be installed, the minimum equivalent area specified should be added to the ventilator sizes specified in other rooms.


Coastal have compiled the information directly from the government website, view Ventilation: Approved Document F Guidelines in its entirely.

How can I be Part F Compliant?

Trickle vents are the most practical and cost-effective method to meet the increase in required background ventilation. Coastal supply a range of trickle vents which have been developed for revisions to Part F regulations.

Plastic Trickle Vents
TVA Plastic Semi-Recessed Clip-Fix Trickle VentTVP Plastic Surface Fix Trickle VentTVF Plastic Recessed Trickle Vent

Metal Trickle Vents
TVS Aluminium Surface Fix Trickle VentTVP Plastic Surface Fix Trickle Vent

Timber Veneer Vents
Our TVT Timber Veneer Vent Set fits over the TVA Trickle Vent enabling the vent to be finished flush and in exact same colour/finish as your window.

The TVT Timber Veneer Vents bring many benefits to your timber window:
  • Available in 3 finishes – oak, pine or sapele – so whether you are staining or painting your timber windows the trickle vents will blend in perfectly with the finished window.
  • They fit flush over the TVA Trickle Vent enabling the vent to be finish flush to the surface of the window so they’re less obtrusive
  • 2 sizes available


Looking for an alternative to Trickle Vents? Join our sister company Venti in the #CleanAirMovement – providing continuous mechanical fresh air supply through their FLUXO unit.

Learn more about FLUXO


For more information on how we can help you comply with the new Document F: Ventilation 2022 Guidelines please email us on  sales@coastal-group.com.

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