*If there is a terra cotta clay flue liner, does it protrude out of
the top of the chimney at least 2 inches? If there are at least 2
inches and the terra cotta clay is in good condition, you will use
our stainless steel, terra cotta top plate that has a 1 1⁄2inch edge
that goes all the way around (like a shoebox lid).
*If your terra cotta clay flue is in bad shape at the top, you may
need to just take a hammer and tap all around that terra cotta,
taking it away to make the surface flat at the top of your chimney.
In that case, you will simply use the flat top plate that comes with
our liner kit.