How low can you go?

[joshir]

My extension plans has a roof pitch of 13 degrees. I'm also planning to have 2 Velux windows in the roof.

I believe that he lowest pitched roof tile is a Lafarge Redland Regent which is suitable down to a pitch of 12.5 degrees.

But what about the Velux Windows. Can they be raised to 15 degrees? Is there a real issue at 13 degrees? Should I use flat roof Velux windows?

 

[masona]

Most Velux windows I've fitted are normally for 20 degree plus.

The only one I know of are the FRS ( flat roof system) starting from flat up to 15 degree and you could make a small box section and finish off with a wider lead flashing.

I have fitted a normal Velux window on 12.5 degree but knew there wouldn't be much rain where it's sited, give velux a ring for more info.