What thickness of PermaBase® should I use for my project?
For residential walls and ceilings you should use 1/2″ or 5/8″ PermaBase; for floors and countertops you can use either 1/4″ or 1/2″ depending on your subfloor and the thickness of adjoining materials (such as the transition from tile to hardwoods). If your subfloor is at least 3/4″ thick then you can use 1/4″ PermaBase; otherwise you will need to use 1/2″ PermaBase. 5/8″ PermaBase is also produced for many commercial applications.