One of the main items of work was:
Item 3. Front water ingress
This related to water coming inside from both the bedroom and the lounge. The bedroom window is a gable type window. Both windows had been altered in the house's history, enlarged, and originally set back within an arch they had been moved as far forward as possible with the arch filled but no supporting lintel.
All this work has been completed, lintels installed*, brickwork redone and checks for flashing and tiles. Ridge tiles refixed etc.
As I watched yesterday's rain pelt down I had this smug "my house is now fixed" feeling smashed as I went upstairs and saw a stream of water, in a new location, to the side of the window. Fortunately we hadn't yet redecorated.
Before the rain I had agreed with the builder to pay for the remainder of the work that had been completed (ie before Friday's scheduled work).
Once I saw the leak I called the builder and to his credit he came straight out to see it but he doesn't know where it's coming from and plans to investigate it when he comes on Friday. Nonetheless he still sent the invoice for the previously agreed amount.
Should I pay - withhold? The value is less than the value of the work undertaken on that window. How will I know it's fixed if there is no heavy rain for a few weeks?
* Lintels. Heavy angle iron was used. About 1.5" of lintel is visible and the bottom is rusting through the white paint work. The upper is just rusting. I accept this is surface rust but that can't be right can it?