Architect will decide all , we had 10000 m2 at hallywell jones BMW factory in Chester and 400000 in Danbury mall Connecticut few years ago and there was 12 tilers in our squad, after I swore id never do anything like that again its on your knees every day .
I was alot younger then and good health .
TBH theres alot to be said for simple private work they make you a cup of tea and cookies .
Good luck sincerely
