Leaking roof

jyouell

Hi all,

Can I pick your collective brain please?

I have recently had a on storey extension built to the rear of my house, it has been signed off by building control etc. Over the last few days of reasonably heavy rain I am seeing damp patches above the window and also french doors where the plasterboard comes into contact with the external wall of the cavity wall, obviously indicating that there is water getting into the cavity. I have two veluxes which do not appear to be leaking. I know this is not serious as there is only a little water, but if anyone could suggest possible causes or remedies. Failing that if anyone has any recommendations for resonably priced roofers in the portsmouth area I would be very grateful!!

Thanks

BobProperty

jyouell wrote: »

.... Over the last few days of reasonably heavy rain I am seeing damp patches above the window and also french doors where the plasterboard comes into contact with the external wall of the cavity wall, obviously indicating that there is water getting into the cavity.....

First question, why isn't the person who built this, fixing it?
Second, from what I understand and the bit in bold above, I would say that unless the damp is where the cavity is (we are talking the horizontal closure piece above the door/window, aren't we?) then it's not water getting in the cavity. More likely that the frames aren't sealed properly or the water is getting past the brickwork and lintels on the outside face somehow.
Any chance of a picture?