Hello everyone! We've been badly let down by our 'builder', so the cement is crumbling between the bricks on our dome and the builder left very big gaps between the bricks too (despite them being shaped for the purpose). Ours is a shallow dome, for breads & pizzas hopefully. Space is too small to crawl in and fix the problem, so we want to line it with stainless steel - hopefully avoiding the concrete crumb pizza topping. Does anyone know how thick the steel should be, how much it will warp or buckle over time and at temperatures of 450 C? We are thinking of welding steel ribs to minimise buckle, but not sure what gap to leave between the steel liner and the bricks. Please help - we're getting very down about this Thanks in advance!