What Kind of Plywood Do I Need to Replace Boat Floor?

Are you planning to replace the floor of your boat but not sure what kind of plywood to use? Choosing the right plywood is essential for a durable and long-lasting boat floor. In this article, we will guide you through the different types of plywood available in the market and help you make an informed decision.

What is Plywood?

Plywood is a type of engineered wood made by gluing together several thin layers or plies of wood veneers. The layers are glued with their wood grain rotated at 90-degree angles to each other, which gives plywood its strength and durability.

Types of Plywood

There are several types of plywood available in the market, but not all are suitable for marine applications. Here are some popular types of plywood and their uses:

1. Interior Plywood

Interior plywood is commonly used for interior applications such as furniture, cabinets, and decorative paneling. It is made with softwood veneers like pine or fir and has a smooth finish on both sides.

2. Exterior Plywood

Exterior plywood is designed for outdoor use and can withstand harsh weather conditions, moisture, and decay. It is made with hardwood veneers like oak or birch and has a rough finish on one side.

3. Marine Plywood

Marine plywood is specially designed for use in boats, docks, and other marine applications where it may be exposed to water or moisture. It is made with high-quality hardwood veneers like teak or mahogany, which makes it waterproof and resistant to rot.

Choosing the Right Plywood for Boat Flooring

When it comes to replacing your boat floor with plywood, marine-grade plywood should be your go-to choice. Although it may cost more than interior or exterior grade plywood, it offers superior durability and strength, making it a worthwhile investment in the long run.

Marine plywood is available in different grades, such as A-A, A-B, and B-B grades. The A-A grade plywood has no defects on both sides and is the most expensive.

The A-B grade plywood has no defects on one side and can be used for boat floor replacement. The B-B grade plywood may have some small defects but is still suitable for boat flooring.


Replacing your boat floor with marine-grade plywood is a wise decision that ensures your boat’s durability and longevity. Choose the right grade of marine plywood based on your budget and requirements, and you can enjoy your boating experience worry-free.

  • Tip: Always wear protective gear like gloves, goggles, and a mask while cutting or sanding plywood to prevent injuries from flying wood chips or dust.
  • Disclaimer: This article is for informational purposes only. Consult a professional before undertaking any boat repair or renovation project.

Now that you know what kind of plywood to use for replacing your boat floor, go ahead and start planning your project!

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Lindsay Collins