Window Trickle Vents
Designed to help polluted air escape.
About window trickle vents
Modern homes are so well-insulated nowadays thanks to energy-efficient windows and doors that they offer very little natural ventilation. The problem with that is it causes a build-up of pollutants, together with condensation and mould. Trickle vents address the problem by improving airflow and reducing pollutants.
Common questions about window trickle vents
Trickle vents are something that many homeowners want to increase their knowledge of ahead of buying replacement windows. Our common questions tackle the key points about them, covering areas like building regulations and explaining their importance.
1) When did trickle vents become compulsory?
The introduction of Approved Document F came into force on 23rd November 2022 in Wales. From that point onwards, all window and door installations must conform to the new building regulations relating to trickle vents. It therefore applies to installations in all MPN’s service areas, including Cardiff, Swansea and Bridgend.
2) Can ventilators be installed through a wall rather than trickle vents?
Yes, it doesn’t matter how ventilation is installed. You are permitted to install a background ventilator through a wall offering the equivalent area instead of trickle vents.
3) Will trickle vents save me money?
They’re designed to help with that as the ventilation minimises humidity, lowering your energy bills. If you ever get into a car with damp clothes on, the windows promptly mist up, which can be cleared away with air conditioning. That’s because humidity has been lowered, which is the job of trickle vents.
4) Can trickle vents reduce mould?
Humid air is a catalyst for condensation, which subsequently causes mould to manifest. It often shows up as black spots on the side surfaces of external walls around windows and doors, in corners and in badly ventilated areas, like behind cupboards and wardrobes. The ventilation heralded by trickle vents can help reduce mould.
5) Can trickle vents stop damp from occurring?
Mould indicates that damp has emerged and, in most situations, fitting trickle vents will let some air spill into a room and either reduce or prevent the problem.
6) Is it best to keep trickle vents open in winter?
Trickle vents have an integral role to play in controlling ventilation and the amount of fresh air that living spaces receive. Leaving trickle vents open can reduce moisture in the air by filtering out damp air from the house. Our advice would be to completely leave them open.
7) Should trickle vents be closed at night?
Trickle vents and night vents will allow controlled ventilation and fresh air into rooms, while freshening stale air and decreasing moisture. So yes, it would be a good idea to close them at nighttime.
8) Can trickle vents be retrofitted?
Yes, you can have trickle vents fitted to existing windows and doors if you begin experiencing problems like mould and condensation. We must advise though that lining through the position on different windows after they’ve been installed is very difficult.
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