when you say cement tiles, you probably are referring
to the old asbestos fiber cement shingles. they are
a flat slate like shingle with a wood grain type
of impression pressed in to the top surface. they
can no longer be manufactured because of the asbestos
content but Supradur makes a mineral fiber replacement
shingle that can be used. Supradur is now part of
GAF and can be reached on the net @ GAF.com.