My home was built in 1907 and is sided exterior shingles made with asbestos cement. Although most of the shingles are in very good condition, several were broken when we had our deck rebuilt and the old deck removed. The individual shingles are 12 x 24" and have a striated texture. I am looking for something that looks comparable so that I can replace the damaged shingles -- they are only about 5/16" thick. Do you know of a replacement product? Thanks for your help. Trish