Marine Plywood

Marine-grade plywood, often simply called marine plywood, is not what it’s often claimed to be. That is, it’s not waterproof. Since it’s not treated with chemicals it is not rot resistant. However, it is a good-quality, hardwood plywood made with waterproof glue. Better grades also tend to be lightweight, strong, and virtually free of defects. These qualities are what make this plywood a popular choice for building boats and boat parts.

It’s also a smart option for durable outdoor furniture projects in coastal areas, especially after it receives a strong protective finish.

The main benefit of using waterproof glue in marine plywood is that if the plywood is exposed to moisture, or even very high humidity or boiling temperatures, the glue won’t fail, and therefore the wood layers of the plywood won’t delaminate, or fall apart. This is an important design characteristic if you’re building, say, a boat hull with plywood.