Aprelflooring.com

5/16" thick 2¹/4" wide unfinished Oak floor was frequently used for flooring last century. Today this type of floor is to be installed in the addition to match the existing 5/16" hardwood. Cons: top-nailed - all nail holes are to be patched and seen after finishing; too thin to be refinished many times.

A good substitute for above-mentioned hardwood is Unfinished 3/4" Tongue & Groove (T&G) is to be nailed or stapled to tongue of the plank. Pros: no nails or staples are seen after installation and finishing; can be refinished many times.