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Ventilation can be critical; adding too little means a hot and stuffy space; hot air rises and can get trapped underneath the glass roof. While our high specification standard glass combats this issue to some degree, to enjoy the roof lantern all year round we strongly recommend adding ventilation to the lantern, particularly if the roof lantern is on the large size.

Roof lanterns in 'The Collection' are already specified with a basic level of ventilation to adequately ventilate the roof but for a bespoke roof lantern, you’ll need to specify the number of vents most suited to the size and application of your roof lantern. Clearly we can help you with this.

Below you will find information on the type of ventilation we offer - from trickle ventilation to opening vents (otherwise know as windows).


Not appropriate for either very small hipped or square roof lanterns

The most effective and widely used method is to include ridge-mounted casement-type windows within the roof lantern assembly. The vents high performance aluminum structure makes it lightweight and yet extremely strong, while heat loss and condensation are prevented by the use of thermally broken sections. Double Q-Lon weather seals between the vent's lid and base ensure optimum sealing, and a built in weather bar and internal drainage system provide maximum protection from the elements. Electric operation is by a discrete chain actuated opener and a wall mounted switch. Electric operation may be enhanced to include a variable thermostatic control, with rain sensor setting and a manual override. Electrical connection is by others.

* Not available for Linear Collection


Particularly appropriate for small rectangular and square roof lanterns

Passive ventilation (air exchange from inside to outside only) can be achieved via a set of hidden trickle vents that are an integral addition to the roof plate (the base of the lantern). A fine mesh stops any insects from entering and an external cowl prevents rain ingress.

A rectangular shaped roof lantern with a 'double pane' ridge mounted roof ventilator.