We had a 3m single story kitchen extension done earlier in the year, with two Velux windows. It was fine for the first couple of months but now we regularly get damp patches on the ceiling when it rains (doesn't have to be particularly heavy).
Spoken to our builder and he is adamant that he has done plenty of 12 degree pitches with Velux windows and has never had problems. Do we believe him?
I've looked at the tiles they've used and they are for a minimum 17.5 degree pitch and I think Velux recommend a minimum 15 degree pitch?
What do you think would be the best remedial action for this. Is there any way new roof tiles would sort it? Or does the roof need to come off and be redone? Or would it be easier/cheaper/better to change the windows and roof to a fortcrete (or similar?) window/roof system?
Any help or advice you could give would be hugely appreciated as we really don't know what to do.
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