Customer wants a raised base. Normally I have it the thickness of a roofing lath. But they want it out heavier. Prob take 2 scratch coats and a final coat. What is the maximum you think I could get away. Was thinking of doing an 1.5inch depth.
just put a 20mm ballast coat up the wall.lolUse sharp sand mixed in with your backing coats it'll help and fibres too