I've recently had some flashing replaced on a lean to conservatory. The leek was a mess so needed doing! I managed to get the roofer out and he did a fab job very neat and totally flush against the conservatory roof. He mentioned adding extra length to the side as the internal leek was quite bad.I never questioned him as I was at work at the time so probably wasn't listening properly. I couldn' take time off wotk last minute so job was done wile I was out. On closer inspection this morning the lead flashing seems to just hang over on the edges. Should this be flush with the conservatory and brick wall? Theres A smallish hole where it's not pushed in...surely water / draft would get through? Thought it was fine but after thinking about it this morning thought I'd double check.