I'll be adding question after question to this thread (sorry), I'd really appreciate the help!
So in my brothers refurb I'm putting in a new boiler and repiping everything - heating and water. I'm converting a conventional system to a combi.
He now wants the boiler in the loft which is fine (it's currently in the kitchen), gonna get a roofer to sort the roof out for a vertical flue and depending on how near the adjacent chimney is in the house next door I'm gonna put the boiler either on the back wall or the perpendicular wall to the left - see pic

A builder told my brother that he would have to build a stud wall for the boiler to hang on - I don't believe this is required and don't see why it can't be hung directly to the wall.
Am I right or wrong?
So in my brothers refurb I'm putting in a new boiler and repiping everything - heating and water. I'm converting a conventional system to a combi.
He now wants the boiler in the loft which is fine (it's currently in the kitchen), gonna get a roofer to sort the roof out for a vertical flue and depending on how near the adjacent chimney is in the house next door I'm gonna put the boiler either on the back wall or the perpendicular wall to the left - see pic

A builder told my brother that he would have to build a stud wall for the boiler to hang on - I don't believe this is required and don't see why it can't be hung directly to the wall.
Am I right or wrong?