It is formulated to not be affected by weathering, salt, dirt, freezing temperatures, UV light, and wind-driven rain, among many other damaging elements.
32 Oz Makes 2 Gal. Brick Sealer, Natural Finish, Clear Ideal for use on uncoated/unpainted, vertical/horizontal, interior/exterior concrete surfaces such as: brick floors, walkways, chimneys, walls, patios, garden fences, brick oven exteriors, and any other porous brick surfaces.