Trickle Vents and Proposed Building Regulations Changes


Proposed changes to building regulations would see trickle vents become mandatory on all new windows and doors from later this year. Learn more about what they do below then let us know what you think in our trickle vents survey.

Huge improvements have been made with windows and doors over the last decade, particularly when it comes to draught proofing.

Modern windows are far more air tight than in previous generations, which is fantastic when it comes to energy efficiency and saving money on your bills.

One side effect, however, can be reduced air flow through a home. This can lead to an increase in internal moisture - and the potential for window condensation - and a decrease in air quality. This is where trickle vents come in. 

What are trickle vents?

Trickle vents are where a small hole has been cut into your window to enable air to pass from outside to inside your home and allow fresh air into the building without having to open it.

They are typically found in the tops of windows and usually have a grill cover on the outside and a manual flap to close on the inside, they are normally made out of plastic but can sometimes be aluminium.

Are trickle vents mandatory on new windows and doors?

Not currently, but there are proposed changes to the current building regulations that would make them obligatory on new windows and doors from later on in 2021.

We encourage you to take our survey and let us know your opinion on trickle vents and whether they should become mandatory.

We are currently reaching out to both installers and homeowners to canvas their views on this topic, and we'll be presenting the results to government later on this year.

What are the benefits of trickle vents on windows?

  • They remove stale air from your property
  • When used properly they can help reduce the levels of condensation and mould in a home
  • They allow ventilation to occur whilst windows remain closed, meaning a more secure household

What are the drawbacks of trickle vents?

  • A hole must be cut in new windows
  • Some homeowners object to the aesthetics of trickle vents
  • They let heat out and noise in

Share your views on trickle vents

Tell us what you think about trickle vents and whether they should become mandatory on new windows and doors - complete our short survey

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