BS 1088 Standard
WBP Phenolic Glue
The glue used in marine plywood must be waterproof. It ought to be phenolic A-bond. Otherwise, it won’t be marine. The glue must pass a stringent test that shows it won’t de-laminate under water boiling.
Minimum Core Gaps
Core gaps must be avoided as much as possible. Gaps create a path for water to sneak into the board and ruin the ply. So voids must be absent if plywood is classified as marine grade.
Thick Face Veneer
Both side faces and core veneers must be of high quality as well. This helps the appearance and endurance to extreme conditions.
