We had an extension about 4 years ago that constantly let water in in heavy rain. Shallow pitch, seemingly loads of different potential issues. In the end, the builder put a flat roof lining under it to solve the problem and it seemed fine. The extension was a standard extension on the back of the house.
This morning, my wife has said water is getting in – but it’s way away from the extension, dripping from the ceiling in the bang centre of the house; directly under the ridge line of the roof if you were to go vertically up from the drip.
Who to call? Plumber? Builder? My wife’s turned the water off to try and eliminate at least one potential cause.
As an added complication, the original builder seemingly went bust and is not contactable.