Clay match and availability

[Rbps]

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 

[Oz07]

That's what normally happens. Strip rear to match front 

[PeterW]

32 week delay on some tiles currently. Also, watch out for reclaim yards adding massive premiums to prices - seen them selling Marley moderns for example at £1.75 each, they are only £1.15 new ..!
 

Same with clays - rosemarys are pretty easy to match, so keep an eye out on Facebook marketplace too. 

[makie]

I'm doing a big job with Rosemarys just now and it is a 3 month lead time