When constructing laminate countertops, it's important to use a plywood that is specifically designed for this purpose. The most common and recommended type of plywood used for laminate countertops is "substrate plywood" or "countertop-grade plywood." This plywood is specifically manufactured for use as a base for laminate surfaces and has several key characteristics that make it suitable for this application:
Flatness: Countertop-grade plywood is made to be extremely flat and stable, which is crucial for creating a smooth and even surface for the laminate to adhere to.
Moisture resistance: This type of plywood is often treated to resist moisture, reducing the risk of warping or delamination caused by exposure to water or humidity.
Smoothness: The surface of countertop-grade plywood is typically sanded to a smooth finish, making it ideal for bonding with laminate.
Thickness: The standard thickness for countertop plywood is 3/4 inch (19mm), which provides adequate strength and stability for the countertop.
When purchasing plywood for laminate countertops, ensure that it is specifically labeled as "countertop-grade" or "substrate plywood." Additionally, make sure it meets the industry standards and requirements for durability and quality. It is best to consult with a professional or the supplier to ensure you get the right plywood for your specific project.