What happens if I don't have a roof cavity space?

You can still benefit from a Twista Roof Ventilator!

Twista Roof Ventilators are primarily designed to work for the attic space; however when there is a limited roof cavity space you can fit ceiling vents directly beneath the Twista Roof Vent unit and this will extract the summer heat directly from the room.

In the winter it will help to ventilate your room or if you prefer to keep the heat inside then a closeable ceiling vent is an option.