Thanks for bringing this to our attention, Dai. Rust-Oleum Restore 4X Deck Coat is a high build, water-based acrylic coating designed to resurface aged wood and concrete decks, patios, and walkways. The high build finish provides slip resistance and can bridge over or fill small cracks, checks, nail holes, or other minor surface defects. Keep in mind that proper surface preparation is key for the best results of this product. For more information, feel free to call us at 800-373-6333 to discuss further. - Rust-Oleum Product Support 5