Marine Plywood Thickness & Sizes: Your Ultimate Buyer’s Guide

October 23, 2025

Marine plywood is one of the most dependable and high-performing wood materials available today. Whether it is for building kitchen cabinets, boats, furniture, or outdoor fixtures, marine plywood continues to perform against humidity, water, and time. In order to properly make the most of marine plywood, it is useful to know marine plywood sizes, marine plywood thicknesses, and how to select the thickness of marine ply suitable for the various types of projects you are undertaking.

This complete buyer's guide will allow you to explore the most suited sizes of marine ply, the CM size that the boats and yachts prefer, the range of marine plywood thickness in millimeters, and every single marine plywood thickness in Royale Touche, the brand most famous for superior quality and craftsmanship.

The Marine Plywood and Its Importance

Marine plywood is one of the premium-grade products made from selected hardwood veneers bonded with waterproof adhesive. The result is a ply that does not delaminate or swell even when presented with high moisture for an extended period.

It is important to decide the marine plywood sizes and marine plywood thickness well before starting your project. The correct marine ply thickness will determine the strength and weight of your completed structure. Royale Touche provides uniform thickness in —

Sizes of Marine Plywood on Offer

Marine plywood comes in a variety of standard and readily available sizes and the most utilized marine ply sizes on the market are:

4 ft x 8 ft (1220 mm x 2440 mm) – Everyday normal size plywood for everything from furniture, cabinets, and walls. Versatile in its ways of use.
5 ft x 10 ft (1525 mm x 3050 mm) – Big marine ply size, for bigger furniture, wall panels, and marine use.

The marine ply sizes are perfect for both reducing waste and easier cutting, handling, and installation. Royale Touche has a marine plywood size and they can cut to suit you which is efficient and durable in any project.

Marine Plywood Thickness – The Key to Performance

Choosing the proper marine plywood thickness is very important because it controls the strength, flexibility, and longevity of your project. For wardrobes, shelving, or flooring, the marine plywood thickness defines how heavy of a load your structure can bear.

Here are the standard marine plywood thicknesses we offer at Royale Touche for the various applications:

6mm Plywood

6mm Plywood is most useful for lightweight applications such as drawer bottoms, cabinet backs, and decorative panels. So while it is a thinner marine ply, it is flexible in its uses but still stable.

9mm Plywood

applications include small partitions, cabinetry (internal only), and furniture where moderate strength is needed. 9mm plywood thickness offers a balanced marine plywood thickness allowing them to lay flat, be workable, and easy to handle.

12mm Plywood

12mm Plywood is the thickness used in modular furniture, boat interiors, and home interiors. This boat ply thickness in mm retains its durability while being manageable in weight.

16mm Plywood

16mm Plywood is designed for shelving, wall cladding, the thicknesses of marine plywood that are listed below, equate to solid construction for medium-duty load applications.

19mm Plywood

19mm Plywood commonly accepted thickness for heavy-duty furniture types such as wardrobes, tables, and countertops. The thickness of this marine plywood offers very good rigidity for longevity.

25mm Plywood

25mm Plywood is thickest and strongest of the marine ply thicknesses that we offer, the thickness can sometimes be used for flooring, industrial furniture types, and really large works that would preferably benefit from additional strong support.

By supplying the widest collection of thickness sizes in mm for marine plywood possible, Royale Touche enables everyone's application, from beautiful interiors to marine construction, to find the right thickness to match.

Which Thickness of Marine Ply Is Right for Your Project?

The information about marine ply thickness and marine ply sizes will vary, but will at least vary the durability and cost.

For furniture and cabinets, choose 12mm and 16mm thicknesses.
Wardrobes and heavy shelves require 19mm or 25mm thicknesses.
For internal cladding or ceiling panels, 6mm and 9mm sheets are ideal where weight must be a factor, due to the lightness.

There is a use for each thickness of marine ply, and with each thickness comes a balance between load capacity and flexibility. Royale Touche knows that each panel is made to rigorous international criteria in precision, strength, and finish.

Marine Plywood Thickness in mm – Precision and Performance

At Royale Touche, we ensure that each panel is made to precise marine plywood thickness in mm tolerances for flat surfaces and constant strength. The manufacturer's emphasis on accuracy means these panels will not warp or delaminate at coastal or humid locations.

No matter the choice of 6mm, 9mm, 12mm, 16mm, 19mm, or even 25mm, Royale Touche marine plywood sheets are designed for durability and beauty. The accuracy of marine plywood thickness in mm is a critical component of achieving smooth installations for residential and commercial work.

That accuracy in marine plywood thickness and range of marine ply sizes represent why Royale Touche is known as the uncompromising choice of architects, contractors, and designers.

Marine Plywood Thicknesses Available — Why Royale Touche Is Different

Royale Touche offers one of the largest marine plywood thickness selections available today. Each product is tested for quality to ensure uniformation of bonding and a superior finish. The variety of marine plywood thicknesses also allows for customization of furniture and fixtures according to the project.

Whether you are creating kitchen cabinets or designing the internal features of a luxury yacht, Royale Touche's engineered marine plywood thickness in mm and marine plywood sizes provide durability and consistency to create beauty.

Conclusion

Selecting your marine plywood thickness and marine plywood sizes is not solely a technical decision, it also represents a design decision and value that can affect both durability and finish. The marine plywood thickness ratio will determine how lightweight a panel needs to be in a cabinet or how heavy-duty a board needs to be in a structural design.

Royale Touche Plywood provides a range of marine ply sizes and marine plywood thicknesses available including 6mm Plywood, 9mm Plywood, 12mm Plywood, 16mm Plywood, 19mm Plywood, and 25mm Plywood all designed to add lasting strength, quality appearance, and water resistance.

With a better understanding of marine plywood thickness in mm, and understanding the thickness of the marine ply, applicants can select the best panel for their purpose with full confidence. With Royale Touche marine plywood, it is not only about durability — it is about craft, reliability, and quality that can last through the test of time.