How to identify marine plywood?

To identify marine plywood, you should look for the following characteristics:

1. Marine plywood is made from durable, water-resistant and rot-resistant woods like Douglas Fir, Meranti, Okoume, or Sapele.
2. The plywood has several layers of thin sheets of wood glued together and pressed with waterproof resin glue.
3. The face veneers of marine plywood are usually made from hard woods which can stand against weathering and moisture.
4. The edges of the sheet are sealed with a waterproof substance, such as paint or epoxy, to prevent water ingress.
5. Marine plywood is typically stamped or labelled as “exterior grade”.