Stucco for clay flue tile

[Fclark]

I've got my chimney in place with a clay flue tile chimney "smoke chamber" and now a 3' double stainless chimney mounted above that. My question is what to coat the clay flue tile liner with? Could I use a traditional stucco base coat or will high temps create a problem with cracking on stucco since it will not be insulated. Or should I make a wet stucco out of high temp mortar to act like a coating? I have left over blanket insulation and was also thinking about insulating the clay tile first. Ideas welcome!

[david s]

If you don't insulate the clay flue tile it will crack.you can insulate it with blanket or vermicrete or both.

[dakzaag]

It might crack any way, but I have an 8 X 12 I have used for years and it is holding up just fine. Depends on how you abuse it.