Cornerstone, Inc. is a Consultant, Engineer, General Contractor, Owner Real Estate Developer, Specialty Contractor, Supplier that serves the Tanner, AL area and specializes in Ceilings, Countertops, Curtain Wall and Glazed Assemblies, Design and Engineering, Door and Window Hardware, Doors and Frames, Electronic Life Safety, Electronic Security, Entrances and Storefronts, Finish Carpentry, Flooring, Glass and Glazing, Louvers, Metals, Painting and Coatings, Plaster and Gypsum Board, Plastic Composite Fabrications, Roof Windows and Skylights, Specialty Doors and Frames, Tile, Translucent Wall and Roof Assemblies, Vents, Wall Finishes, Window Wall Assemblies, Windows.