*T & Cs apply

Trickle Vent Guide

We understand that many people struggle with how many vents are needed for there rooms. This is a handy guide to help you though.

The easiest place to fit a trickle vent after the window has been installed is in the head of and opening sash. This enables you to drill quite easy without ruining the wallpaper and getting grief from the other half. With that in mind you need to count how man openers you have in the room

The picture below shows what we refer to as the Opener (or Sash)

For Example In the drawing below there are 2 openers, Take a look at yours and click the button that corresponds with the same number.


Reset Calculator 

Please note this guide is intended to help you choose the correct vents for your property. If you are unsure please contact your local building control office to get more advice.