As can be seen it's coming off the bays down the front. The Roofer wanted to fit two new fiberglass roofs with much better lips and drainage holes towards the door. I'm a bit concerned I'm just moving the overflowing to the inner windows of the bays.
The roofer didn't want to do this as he thought it could cause issues in cold weather with water freezing and a slip hazard - it's also a sloping concrete drive so water could even run to the pavement and cause issues there too. He'd only do it if he could discharge water into a drain and...
I own a 30's double fronted mid terrace. The front bays have both started overflowing down the front of the house. Initially I though this was a roof gutter issue so had it cleaned and checked. Unfortunately it's still overflowing when it rains off the bays. I can't fit guttering to the bays...