When shopping for a hardwood floor, homeowners definitely need to consider the issue of thickness. As a rule of thumb, thinner floors (3/8” - 9/16”) are less expensive, and thicker floors (5/8” – 3/4") are more expensive. Generally speaking, thicker floors have thicker wear layers (the surface layer), which makes them more expensive, but which means that they are more durable and will last longer (and have more potential to be resanded and refinished multiple times). Thinner floors can sometimes feel “tinny” and hollow to walk on, whereas thicker floors tend to feel solid and more grounded.