Would increasing the overlap not mean that the angle of the roof surface is reduced even more?He's probably increased the overlap to try compensate for the low angle.
No, overall pitch will remain the same. Increasing overlap might help a little but will still be liable to leaks particularly when the wind is blowing up the slope.Would increasing the overlap not mean that the angle of the roof surface is reduced even more?
Had an architect. In his words - “There’s nothing wrong with the pitch of the roof. It’s not my fault the builder used the incorrect materials on it.”The pitch on this roof was probably dictated by the internal ceiling height and the position of the second storey window cill. We normally advise a flat roof or a pitched slate roof in these circumstances. While low pitch slate roofs can be prone to capillary action, they are generally more reliable where velux -type windows are used. Who picked / advised the roof design/covering ?
If you look at where the lean-to is joined to the main house, did the builder use every inch of space up to underneath the windowsill or could he have done the cut-in even higher up. If there is room to go higher then your architect should have seen to it that the builder used up every available millimetre to go as high with the cut-in as he could. One of the biggest problems that subsequently occurs with lean-to extensions is low roof pitch leading to leaks and any architect would know that. I think you said earlier that you paid the architect to manage the project. Well he clearly didn't.“There’s nothing wrong with the pitch of the roof. It’s not my fault the builder used the incorrect materials on it.”
Lol… Time Machine travel is great!Feb 2023 - definitely surreal