We're thinking about converting our less than 1 year old conservatory into a 2 storey extension, would the current base hold this? (2 layers of brick with breeze block in the middle) If so will this save me a few bob? Extension will be 4 meters wide, 3 meters long and ?? high. Mnay thanks Dan
Its not the wall that determines it, its the dimensions of the footing and the sub structure beneath the footing that determines what size wall you can build. The local building reg's department will tell you.