Underlayment plywood which is touch-sanded at the mill ensures that the plywood is?

Touch-sanded underlayment plywood refers to plywood that has undergone a light sanding process at the manufacturing stage. This process is primarily aimed at achieving a smooth and consistent surface finish, which directly affects the uniformity of the thickness.

When plywood is touch-sanded, the goal is to ensure that any minor variations in thickness due to the layers of wood and adhesives are corrected. This results in a product that has a standardized thickness across the entire sheet, making it easier to work with during installation and ensuring a stable base for flooring or other applications. Uniform thickness is particularly important in construction as it helps to provide a level surface for the subsequent layers to be installed properly, which ultimately contributes to the overall quality and longevity of the installation.

In contrast, while lightweight materials, moisture resistance, and durability are important factors in the selection of plywood for various applications, they are not specifically guaranteed by the process of touch-sanding. Therefore, focusing on the touch-sanding process clarifies its primary benefit in relation to achieving a consistent thickness.