Red oak hardwood flooring has a reddish patina and white oak hardwood flooring tends to have a grayish patina in their unfinished forms. White oak flooring also is a harder, denser wood species in general. The grain structure is also a bit different but again, most people wouldn't notice. Manufacturers of hardwood flooring will generally mix and match both red and white oak in their "oak" floor offerings unless otherwise specified. If they are labeled "white oak" or "red oak" then they are generally going to be 100% of the species specified.
Here is a floor that we recently installed. A 3 1/4" wide, white oak unfinished hardwood floor that we sanded down and finished with natural coloring and three coats of a high quality, oil base finish. This floor came out great and should last for years to come!
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