Hi, hoping for some advice reassurance please.
We are adding an extension to the back and side of our solid wall 1920s house. After much deliberation we have decided on a pitch roof, I prefer the look of this and also we won't need planning consent. The architect has designed a 15 degree pitch, but we do not have room fot the recommended 150mm upstand due to 2 upstairs windows, however the architect has reassured us that the reduced upstand is still with the guidelines. We have had a couple of builders take a look at the whole of our plans so we have some reassurance that what we are doing is ok before the architect completes the building reg drawings. One has suggested that we may encounter problems with a reduced upstand, albeit within guidelines and is suggesting that we incorporate a gully tray. Not sure what this is but tried to Google. Can this be done on solid walls? What are people's thoughts? Thanks in advance.