Shower Cleaning and Restoration in Pittsburgh. At clean interiors 412-414-3828 we can clean and restore your shower. We can clean your natural stone shower and polish damaged stones. We can also teach you how to maintain your natural stone shower in a way that will not damage your stone. Specializing in tile grout cleaning, grout color sealing, shower restoration, natural stone care, grout repair, tile replacement re-grouting, grout removal, stained grout, grout refinishing, tile cleaning, tile sealing, caulking and all your tile grout needs.