What pitch should my flat roof skylight be?

August 23, 2017

We recommend that our flat rooflights are installed with a minimum five-degree pitch to comply with building regulations and help preserve your rooflight and property.

If your rooflight is completely flat, or at a pitch of less than five degrees, rainwater will pool instead of running off into drainpipes or gutters.

Once the pooled water evaporates, it can leave dirt behind which can stain the glass.

Creating a five-degree pitch

If your flat roof doesn’t have a five-degree pitch, the angle will need to be achieved by creating a small timber frame.

The flat rooflight installation video below shows how this can be done:

In addition, our rooflights also have an Easy Clean nano coating which encourages dirt to run off rather than stick to the glass.

For further advice, talk to the experts

 If you have further questions about anything you have read here, Roof Maker’s expert team will be happy to advise you. Just call us on 0116 269 6297