What is Marine Grade Plywood?

Marine-grade plywood is a hardwood panel that can withstand constant exposure to rain, snow, and moisture. Learn about marine plywood and which projects it is best suited for.

Marine grade plywood is noted for its strength and durability in outdoor furniture, decks, porches, boats, and other constructions, and is built to withstand the elements over time.

What exactly is Marine Grade Plywood?

Marine-grade plywood (also known as marine plywood) is a high-quality hardwood panel that can withstand constant exposure to rain, snow, and dampness.

Marine plywood has distinct properties.

Marine grade plywood, unlike typical pressure-treated board, is not chemically treated to boost its resistance to rot, mould, and dampness. Instead, it is made up of several thin layers that are held together by waterproof adhesive. For increased strength, these layers are cross-laminated, and the panel is bonded using heat and pressure.

More: What Are the Best Applications for Marine Grade Plywood ?

Marine Grade Plywood Varieties

Marine plywood is available in a variety of sizes, thicknesses, and grades. British Standard 1088 is the standard for marine plywood, which is mostly used for marine boats. Aquatek is a less expensive alternative to the more expensive BS1088. Joubert Okoume is the highest quality maritime plywood available today, and it is manufactured in accordance with British Standard 1088, as verified by Lloyd’s of London.

What Are the Advantages of Marine Grade Plywood?

Unlike other types of plywood, marine plywood is bound with a waterproof glue that won’t fail when exposed to water, high humidity, and boiling temperatures, protecting the plywood from delamination.
The thin layers make marine plywood easy to cut and sand clean, and the higher grades are strong and lightweight, with limited defects. According to The Engineered Wood Association, plies may have knots but no knotholes (voids that could trap water, leading to rot).

Marine grade plywood, unlike cedar or redwood, is not naturally resistant to rot and decay and may require a protective treatment. Marine plywood furniture, on the other hand, can last for many years if properly sealed.
Do you still have questions about choosing marine plywood for your project?
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