Old Mill Brick Brickwebb thin brick is made from the highest quality real clay brick. Castle Gate is a distinctive blend of reds, grays and blacks, tumbled for an old weathered look. A perfect fuse of colors representing the homesteads on the Old English countryside. The texture and color is the perfect look for your interior or exterior project. Brickwebb is designed for quick and easy do-it-yourself installation, with the brick already fastened on durable fiberglass web sheeting for consistent brick spacing. Simply apply adhesive to virtually any surface and press the Brickwebb sheets into place. Color: Multi-Colored.