Fake brick may be fine; I haven't done an extensive survey. The fake rock sold for use on exteriors, however, is awful. If you're closer than twenty feet, the w

Fake brick may be fine; I haven't done an extensive survey. The fake rock sold for use on exteriors, however, is awful. If you're closer than twenty feet, the wood glue they use to paste it to the paneling is the most visible feature. Nothing that looks like mortar is used. Closer up, the "rocks" themselves start to look like those sold for aquariums. I suspect that the architects who spec these never visit their mistakes.