Background Ventilation (Passive)

How Does Improper Alignment During Installation Cause Trickle Vent Issues?

Improper alignment during trickle vent installation can lead to air leakage, reduced ventilation efficiency,...

I am having new windows installed. Can I refuse trickle vents?

If my old windows had trickle vents, must my new windows also have them?

Yes, if your old windows had trickle vents, the new windows should ideally also include...

Should You Feel a Draught Through Trickle Vents?

No, you should not feel a draught through trickle vents, however this is a...

What are the common causes of trickle vent failure in double-glazed windows?

Trickle vent failure in UK double-glazed windows commonly stems from manufacturing defects, mechanical wear,...

What are the minimum dimensions for background ventilators in bedrooms under Part F?

Under Part F of the Building Regulations in the UK, bedrooms must have background...

What is the Equivalent Area (EA)?

Equivalent Area is the aerodynamic measurement of an opening, specifically a measure of the...

What is the Free Area?

Free Area refers to the geometric open area of a ventilator or air vent,...

What Role Do Trickle Vents Play in Winter Ventilation?

Trickle vents are small, adjustable openings in windows or doors that provide continuous background...

What size trickle vents are needed for a living room?