Concrete Stain. Deep Base. 3.43L. This durable, water-repellent formula forms a strong, long-lasting opaque film on properly prepared interior and exterior concrete surfaces. It is designed to protect and enhance both vertical and horizontal surfaces. Ideal for use on concrete, masonry walls, basements, patios, sidewalks, driveways, garage floors, pool decks, tennis courts, cement blocks, pillars and brick.