Deckwise’s Wisecoat water-based zero-VOC coating is designed for both interior and exterior use on tropical and American hardwoods and thermally modified wood. According to the company, Wisecoat forms a flexible, non-film-forming barrier that coats the hardwood fibers at the cellular level, guarding against water intrusion yet allowing the wood to “breathe.” The water-based semi-transparent coating has an amber tint with UV blockers, and cleans up with soap and water. deckwise.com.