foresmate logo 3 Jalon Song

What Type of Plywood is Best For Outdoor Use? 

Birch Faced Plywood

What Type of Plywood is Best For Outdoor Use? 

Plywood is the preferred building material for many projects due to its resilience, adaptability, and low cost. However, not all type of plywood is created equal. It’s critical to select the correct plywood for your project, especially if you’re working outside and need it to endure the elements. There are several types of exterior plywood to choose from when working on an outdoor project like a deck, shelving, or even a boat! The type of Plywood’s construction grade is vital, but so is its appearance and feel, depending on how you intend to utilise it.

How Does Plywood Get Used Outside?

furniture of birch plywood - Type of Plywood

Exterior plywood is weather (and water) resistant, making it suitable for use both outside and in spaces subject to moisture and humidity, such as a garage. This form of plywood, which is frequently constructed of Douglas fir, is strengthened by glueing its layers together with a waterproof glueing.

Which Exterior Plywoods Can Be Used Outside?

There are several varieties of type of plywood available, the most prevalent being CDX or ACX. To indicate this purpose, exterior plywood is marked with an X, and the construction grade is in the first two letters; the first letter relates to the front of the plywood, and the second letter refers to the rear. A is a premium grade that can be used on cabinetry and other high-end applications where appearance is important. CDX is a less expensive construction grade choice that is nonetheless strong and will not collapse after a rainfall. Veneers, high-density hardwood, or light hardwood can be used to create the layers.

While identical to regular exterior plywoods, marine plywood is the highest quality (AA, AB, and BB), made of knot-free wood. Knot removal in wood improves durability by almost eliminating the potential of water pockets accumulating within the wood. Because it is less prone to breaking when being shaped, marine plywood is used to create boats and other marine applications. If you image the curve of a boat — and then think what would happen if it cracked — you’re not in good shape. It’s also easier to cut and sand, resulting in smoother edges. This sort of plywood can also be used to make aircraft, as well as outdoor furniture and constructions.

Pressure treated plywood, overlay plywood, oriented strand board (OSB), and T1-11 are some other forms of external plywood. Pressure treated plywood is normal plywood that has been impregnated with chemicals that increase its resistance to mould and mildew. Overlaid is similar to ACX or CDX, but with a cleaner finish that is not only more appealing but also more resistant to wear and tear. OSB is a manufactured replacement that works well in places that are only partially exposed to the elements. T1-11 is the most often used siding material.

What Is the Distinction Between Exterior Plywoods?

The main distinctions between external plywood kinds are their construction and cost. Because of its appearance and composition, marine plywood is frequently the most expensive.

CDX is the least expensive option, but it doesn’t mean it won’t last outside. It’s better suited as the inner-core for a project that will be covered in siding, rather than as the focal point of a piece of furniture or a pergola. ACX is a nice compromise: it is less expensive than marine plywood but more appealing than CDX.

Aside from cost and appearance, each type of exterior plywood has a varied thickness and weight, which affects the weight of the plywood and, as a result, the best ways to utilise it. Marine plywood is the heaviest, which is ideal for the durability of a seat in your yard or on a boardwalk, but it may buckle under the weight if used as shelving or cladding.

Fortunately, there are numerous exterior plywoods to choose from for your outdoor building needs, and selecting the appropriate one should not be difficult. It’s best to speak with an expert who can evaluate both your budget and your needs to assist you choose the best plywood for your project.