
Source: wixflooring.com
Unfinished Hardwood Floors Installation - Hardwood Floor Refinishing New Jersey Installation, Repair, sanding.

Source: www.youtube.com
Installing Red Oak Unfinished Hardwood Flooring Close to the Windows and Patio Door - YouTube.

Source: www.lowes.com
How to Install Wood Flooring | Lowe's.
How to install (nail down) unfinished hardwood floors
We installed this red oak unfinished hardwood floor in Ellenwood, Ga, in June 2012. The wood is a 3/4 inch thick and 3 1/4 inches wide. After the sub-floor is prepared and the felt paper is laid down you need to nail/staple the hardwood to the sub-floor. The next step would be refinishing the unfinished hardwood floor. Finish the project with needed transitions and shoe molding along the baseboard.
Please visit www.atlfloors.com for pictures of wood flooring, ideas or to get a free quote for your hardwood project.
How to Install Wood Flooring | Lowe's

Source: macwoods.com
What you need to Know about Prefinished Hardwood Flooring vs Unfinished - MacDonald Hardwoods.

Source: www.oldewoodltd.com
Guide: How to Install a Solid Hardwood Floor.

Source: blog.cityfloorsupply.com
Unfinished vs. Prefinished Hardwood Floors - City Floor Supply Blog.