What Are Trickle Vents?
Trickle vents are ventilation systems built into windows and doors. They allow fresh air to circulate in a room, even when the windows and doors are closed.
They help to reduce condensation, damp and mould, improve indoor air quality and are a requirement of modern Building Regulations.

Why are Trickle Vents Important?
Improved Airflow
Allow fresh air to
circulate throughout the
home for a healthier
living environment.
Reduces Condensation
Help prevent moisture build-up on windows,
walls and other
surfaces.
Protects Against
Damp & Mould
Reduces the risk of damp,
mould and the problems
they can cause.
Maintains Energy
Efficiency
Ventilation without
the need to open
windows fully, helping
to retain heat.

Changes to Building Regulations in 2022
In June 2022, Building Regulations (Document F) were updated to increase ventilation requirements in many homes.
These changes mean that many replacement window projects now require trickle vents to help improve indoor air qualtiy and reduce the risk of overheating, condensation and poor ventilation.
Regulations change in June 2022 and many homes now require
trickle vents when replacing windows and doors,
Do All Homes Need Trickle Vents?
Some properties may be exempt from trickle vent requirements.
- Listed Buildings
- Conservation Areas
- Heritage Properties
- Some traditional construction methods.
Always check with your local planning authority before replacing your windows and doors.
Many Properties Will Require Trickle Vents
Trickle vents are often required when:
- Building a new home
- Replacing all windows and doors
- Your home does not have an alternative
ventilation system.
How Timber Windows
Designs Trickle Vents
Our trickle vent system are designed to perform without compromising on style.

Colour Matched
Finished to match
your chosen product.

Flush Fitting
Designed to blend seamlessly into the frame.

Easy Operation
Simple controls for
adjustable airflow.

Discreet Appearance
No bulky white
plastic vents.

Doors
Hidden within the head drip.

Casement Windows
Integrated into the frame.

Sash Windows
Concealed within the sash box.






