RainGuard Brick Sealer is a penetrating water repellent that dries down to a clear, invisible finish. It has a non-yellowing, low odor, zero VOC, and non-toxic formula, making it safe for people, pets, and plants. It is formulated to not be affected by weathering, salt, dirt, freezing temperatures, UV light, and wind-driven rain, among many other damaging elements. Brick Sealer dries down to a clear, invisible finish that does not change the surface texture or color. 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.