Morning all, new to this forum, just as abit of background I am in the trade (plastering & rendering), got two extensions about to start at home and looking at trying to match these tiles I have attached below, I’ve been told by few people on couple of jobs over past few weeks there are shortages and long lead times. I basically just want to think ahead and either purchase what I need. That would be based on how good of a match as to wether I strip the entire roof. I am thinking of asking my roofer to strip the rear elevation to do the front so that matches then have completely new on the rear. Thanks in advance