What Type of Plywood is Best for Garage Walls?

Garages are not just for cars anymore. For many homeowners, the garage serves as a versatile space that can be used for storage, as a workshop, or even as a home gym. When it comes to creating a functional and attractive garage, one of the most important decisions you’ll need to make is what type of plywood to use on the walls.

We’ll take a closer look at the best types of plywood for garage walls and why they are a great choice for any garage renovation project.

First and foremost, it’s important to understand that not all plywood is created equal. There are many different types of plywood available, each with their own unique characteristics and intended uses. When it comes to garage walls, you’ll want to choose a type of plywood that is both durable and moisture-resistant.

After all, garages are often exposed to a variety of different environmental factors, including humidity, temperature changes, and even water.

When it comes to choosing the best plywood for garage walls, there are a few factors to consider. You want a plywood that is durable, able to withstand moisture and temperature changes, and also looks good. Here are five types of plywood that are well-suited for garage walls:

1) CDX Plywood

This is a common type of plywood that is widely available and affordable. The letters “CDX” refer to the grading of the plywood, with “C” being the face grade and “D” being the back grade. The “X” indicates that the glue used to bond the layers of wood is exterior grade, meaning it is water-resistant. CDX plywood is suitable for garage walls because it can withstand moisture and is also strong enough to hold up to everyday wear and tear.

2) T1-11 Plywood

This type of plywood is also commonly used for exterior siding on homes, making it a good choice for garage walls. T1-11 is made with a rough-sawn surface that creates a rustic look, and it comes in various grades. Like CDX plywood, T1-11 is also made with exterior-grade glue, which makes it resistant to moisture and rot.

3) B-C Exterior Plywood

This is a higher-grade plywood than CDX, with a smoother and more attractive appearance. The “B” side of the plywood has a good finish that is often used for visible areas such as walls, while the “C” side has a rougher finish and is typically used for hidden areas such as behind drywall. B-C exterior plywood is also resistant to moisture, making it a good choice for garage walls.

4) Marine Plywood

As the name suggests, marine plywood is designed for use in wet environments such as boats. It is made with waterproof glue and is usually made from hardwoods that are naturally resistant to rot and decay. While more expensive than CDX or T1-11 plywood, marine plywood is an excellent choice for garage walls, particularly in areas that are frequently exposed to moisture.

5) MDO Plywood

Medium-density overlay (MDO) plywood is made by laminating resin-impregnated paper to the wood, creating a smooth and durable surface. This type of plywood is often used for signs or concrete formwork, but it can also be used for garage walls. MDO plywood is resistant to moisture and has a smooth surface that can be painted or stained.

In summary, the best plywood for garage walls depends on your budget and personal preferences. CDX plywood is the most affordable and widely available, while T1-11 and B-C exterior plywood are a step up in terms of appearance. Marine plywood is the most durable and water-resistant, but also the most expensive. MDO plywood is a good choice if you want a smooth surface that can be painted or stained. Whichever type of plywood you choose, make sure it is rated for exterior use and is moisture-resistant.


Choosing the right type of plywood for your garage walls is a key decision that can have a big impact on the functionality and overall aesthetic of your garage space. By choosing a high-quality plywood that is moisture-resistant and properly finishing and installing it, you can ensure that your garage walls will not only look great, but will also stand up to the wear and tear of daily.

Laura Linney is a team of experts and garage idea writers, I write unique research-based content about home garages that I have studied before, We have created aspirational and achievable ideas for your home. and Garagesideas.com has become the industry's largest free home & garage resource site in the industry.