Velux window custom flashing

22 Dec 2005
Reaction score
United Kingdom
Hi All
I am building an extension and have installed velux windows. Because of how I am trying to co-ordinate everything with the angles of the roof, I am not using the standard flashing kit. This means I am going to have to construct one.

I will have a waterproof membrane which will be glued between the edge of the window and the insulation surrounding the window cavity.

I will then have the flashing which will be plastered and it will be attached to the edge of the window and the surrounding joist.

My question is whether this can just be plasterboard or whether it should be ply to give a more solid construction?

Many thanks for any help
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local