- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 26 May 2022
Trickle ventilation in buildings
- Helping to moderate internal temperatures.
- Replenishing oxygen.
- Reducing the accumulation of moisture, odours, bacteria, dust, carbon dioxide, smoke and other contaminants that can build up during occupied periods.
- Creating air movement which improves the comfort of occupants.
Ventilation in buildings can be either natural or mechanical. Mechanical ventilation tends to be driven by fans, whereas natural ventilation is driven by ‘natural’ pressure differences between one part of the building and another.
Modern buildings tend to be virtually sealed from the outside, and modern, naturally ventilated buildings can suffer problems such as condensation when windows or other ventilators are closed, for example in the winter or at night.
As a result, ‘trickle ventilation’ may be provided to ensure there is always an adequate level of background ventilation. Trickle ventilators are typically manually controlled slots incorporated into window frames. They are generally operated by opening or closing a flap depending on the need for ventilation, however they are intended to be left in the open position.
Trickle ventilators can be self-balancing, with the size of the open area changing automatically depending on the air pressure difference across it, reducing the risk of draughts during windy weather.
‘Crack’ settings (or night latch positions) that allow windows to be left slightly open are not generally recommended as a means of providing background ventilation because of the risk of creating draughts and because of security concerns.
NB Short Guide, Fabric Improvements for Energy Efficiency in Traditional Buildings, published on 1 March 2013 by Historic Scotland, defines a trickle vent as: ‘A small opening in a window or building component to allow for ventilation, where natural ventilation should occur but may be impinged.’
Featured articles and news
BG 50 & VDI 2035 – your questions answered.
Will the way we heat homes change when winter comes ?
Can XR technology be leveraged in design & construction?
Or are you capping.
Digital gaming competition for UK students aged 16 to 18.
Heritage protection in England vs Australia.
Three-quarters of fire doors fail inspections
The role of geoparks, biospheres and world heritage sites.
Just one month to go ! Find out more here.
A new gallery for the University of Huddersfield.
What will it take to stop it ?
To celebrate world bee day 2022 !
Not forgetting part F and the new part overheating part O.
As energy prices jump up in cost.
With people in the UK from Ukraine.
Industry leader Steve Murray takes on role.
An abundant and versatile building material.
600,000 heat pump installations targeted per year by 2028.
Helping prevent those unwanted outcomes.
How has transport changed due to Covid-19 ?
Will you need it ? after June 15 and the new Part O ?