... waterproof & environmental protected. It could be used in water for years. 2. Abrasion resistance (AC5) and impact resistance ... (IC3). Excellent for commercial use.3. Sound reduction (-30DB,designed by hollowed ... sauna room, porch, balcony, garden, garage, gym, office, hospital, supermarket etc... good quality water resistant flooring IC3, AC5, Class33,anti-slip