It seems a few have heard of wall construction with the method he describes but most concur with our office practice that it isn't necessary.
But you said no one in your office has direct experience of stone clad walls!
i posted the question on the forum to see if anyone has ever heard of it or if the builder is really talking out of his rear end
Frankly, I think I’d be doing a disservice to my clients, private or commercial, if they knew I’d taken advice from an Internet DIY Forum and not spoken directly with experts in the trade.
You still haven't explained why you feel the planning drawings should have allowed for thicker walls?
It’s the sign of a good planning application that takes account of the build method as well as the rest of the regs etc. It shows lack of forethought.
in the office (which has been running for nearly 30years)
Your practice website says 15 years BTW.