Cultured Brick Used Brick veneer looks like full-thickness brick, but since it’s only ½” thick, it can be installed anywhere without the expense of additional foundation support. Like all Cultured Stone veneers, Cultured Brick is noncombustible, making it perfect for zero-clearance fireplace facings in any room. Cultured Brick comes in an actual brick size: 2½” high by 8” wide. Corners have a 4” return.