Marine plywood is created with watertight glue and superior-high-quality veneers to resist delamination and decay in wet environments. It’s used in boatbuilding and out of doors furnishings. Interior suggests the panels are not waterproof and they are designed for inside use only. They really should not be exposed to moisture. https://wood-domain01223.ourcodeblog.com/33033767/getting-my-plywood-to-work