It does matter a lot! Roof windows are designed to sit on a certain incline to stop water pooling around the glass and edges, to prevent leaks. If you go below this pitch it will leak. If your roof pitch is too low I recommend going for something like a VELUX low pitch roof window.
It does matter a lot! Roof windows are designed to sit on a certain incline to stop water pooling around the glass and edges, to prevent leaks. If you go below this pitch it will leak. If your roof pitch is too low I recommend going for something like a VELUX low pitch roof window.