Background Ventilation Requirements – Stay Compliant with Part F
Ensure your new build meets Building Regulations for occupant health & air quality
What Is Background Ventilation?
Background ventilation refers to the provision of controllable airflow (usually via trickle vents or similar devices) to ensure adequate fresh air in homes without Mechanical Ventilation with Heat Recovery (MVHR) systems.
It’s a key requirement under Part F of the Building Regulations, helping to reduce indoor air pollution, moisture build-up, and mould that could pose health risks to future occupants.
Does It Apply to Your Project?
If your new build does not include an MVHR system, then background ventilation is mandatory.
This applies to most new homes and many conversions where natural or passive ventilation is used.
Why Are Background Ventilation Calculations Important?
Without proper ventilation, indoor air quality can deteriorate rapidly — especially in highly insulated and airtight homes.
To meet Part F requirements and gain Building Control sign-off, your design must demonstrate:
- Minimum airflow provision
- Proper placement of background ventilation units
- Compliance with equivalent area requirements
What Does Our Background Ventilation Report Provide?
UK Building Compliance delivers clear and accurate guidance on:
Where ventilation should be installed
What the minimum equivalent area should be (per room/unit)
How to communicate these requirements to suppliers and contractors
Our calculations act as a blueprint for compliance, streamlining coordination between your design team, window suppliers, and onsite installers.
What Do We Need to Get Started?
Just send us:
- Floor Plans
- Elevation Drawings
- Window Schedule
- Site Address
Once received, we’ll review your project and return a no-obligation quote.
Why Choose UKBC?
Fully qualified assessors with deep knowledge of Part F
Clear, actionable reports for contractors and specifiers
Fast, reliable turnaround times
Trusted by architects, developers & self-builders across the UK
One-stop-shop for SAP, Air Testing, and full compliance services
Get Background Ventilation Sorted – The Easy Way
Don’t leave compliance to chance. Whether you’re at design stage or near completion, UKBC can provide the detailed background ventilation calculations you need for full Part F sign-off.