What Are Wood Flooring Grades Set By Manufacturers?

Updated on
November 15, 2025

Wood flooring is a product that increases the value of any home while offering long-lasting flooring solutions. From the longevity of wood to its ability to get refinished over time, though costlier than alternatives, it does offer many advantages. When selecting wood flooring, perhaps the most daunting yet exciting aspect of the selection process is understanding the wood grading. Manufacturers use a set of standard grading scales to determine the overall aesthetics, quality, final finish, and the variability in their flooring options.

The first option is whether a grade of a #1 or a #2 is applied. #1 is seen as a standard common flooring grade, whereas, #2 is considerably more rustic with a less refined finish. Many manufacturers either have their own assigned grades, use a national scale or a combination of both. For reclaimed antique flooring, usually, no grading is employed.

Understanding Lumber Grades

To help standardize and designate lumber grades, there are several national lumber grading organizations such as the:

*NELMA or Northeastern Lumber Manufacturers Association

*NHLA or National Hardwood Lumber Association

*SPIB or Southern Pine Inspection Bureau

Originally, grading standards were established as a method for describing the quality of the wood destined for cabinetry and furniture making. However, many companies have started employing these standards to describe their flooring materials. Popular terms may include "Select" and "#1 Common" among others. When homeowners are looking to purchase quality and aesthetically pleasing wood flooring, it is crucial to avoid purchasing anything based solely on lumber grades. Even though the lumber may bear all the markers of being a widely planed quality material, the aesthetics of it may leave a lot to be desired.

Standard Flooring Grades

Much like the national lumber grading scales, standard flooring grades allow manufacturers to adhere to strict national guidelines. Many employ the grades set forth by the NOFMA or National Oak Flooring Manufacturers Association as well as the MFMA or Maple Flooring Manufacturers Association. These grades, unlike those previously mentioned, are only appropriate when applied to flooring planks. From determining the aesthetics to the actual width of the planks, these guidelines dictate nearly all aspects of the flooring quality.

For example, MFMA standardized maple flooring lengths are to be no more than 9 to 96 inches long while their width cannot exceed 3 1/4 inches. The NOFMA, on the other hand, allows white oak planks to have an average length of 22 to 36 inches while the width must remain 3 1/4 inches.

After the length and width are determined, proprietary or common flooring grades are used. For example, a NOFMA white oak plank may meet company standards, but the variations in color and grain may become off putting for many homeowners. As such, many manufacturers employ proprietary flooring grades that address any problems with color variations, streaking, mineral deposits or knots.

No Grading

The only time no grading guidelines are employed is when antique or reclaimed lumber is sold as a flooring material. As such, reclaimed floor boards may bear mortise and tenon joints, voids, missing chunks or any number of antiquing factors. A reliable manufacturer will always provide consumers with samples of the boards they have available.

Classic Flooring is an Idaho Falls brand consumers have trusted for many years in the flooring industry. From offering quality hardwoods to aesthetically pleasing finishes, consumers can also reach out to get a free purchase estimate for brand new flooring as soon as today!

Related Questions

What are wood flooring grades?

Wood flooring grades are standards used by manufacturers to describe a floor’s overall appearance and quality, including grain, color variation, knots, and defects, as well as certain dimensional requirements.

What’s the difference between #1 and #2 wood flooring grades?

A #1 grade is usually considered a standard/common flooring grade with a more uniform appearance, while #2 tends to be more rustic, showing more natural character, color variation, and visible knots.

Do lumber grades and flooring grades mean the same thing?

Not exactly. Lumber grades were originally designed for furniture and cabinetry, while flooring grades focus more on plank dimensions and the visual qualities homeowners will see across a large floor.

Why are some reclaimed or antique wood floors ungraded?

Reclaimed and antique flooring often includes features like old joints, voids, and heavy character marks that don’t fit standard grading rules, so sellers typically present samples instead of assigning formal grades.

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I know the owner of this honest and hardworking company. Taylor (the receptionist) is so friendly and happy to see you as you walk through the door. She is very knowledgeable and kind. If you need flooring, start and finish here. You will not be disappointed.
Justin Cook
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Mark, Kyle and the rest of their team are very professional and are obviously passionate about what they do. I am very happy with their work and will be referring them to my family & friends. Thanks guys!
Taylor W.
Idaho Falls, ID
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Mark & Kyle have always been fantastic to work with. They do great work and I would recommend them to anyone in Idaho Falls looking for hardwood flooring.
Tanner
Idaho Falls, ID
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We moved into a house that was more than 50 years old. Beneath our carpet was hardwood floors that we desperately wanted to keep. However, we were unsure if the gaps, scratches, and missing pieces of flooring could be fixed well enough to look normal. Not only did this company make it look “normal”, but it looked OUTSTANDING. They worked so hard and finished our floors while we were on our honeymoon, and it felt like we came home to a completely different house. They were very pleasant and great to work with!! HIGHLY RECOMMEND.
Sami Dickson
Idaho Falls, ID
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Good hardworking people run this company.
Aaron Tolson
Idaho Falls, ID
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Great staff, love my floors they are gorgeous!
Kristi Moser-Mcintire
Idaho Falls, ID
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Ron Davis
Idaho Falls, ID
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Absolutely in LOVE with our new hardwood floor! We went with a hand scraped hickory wood, a dark stain and a high gloss finish. It turned out better than I could have imagined. It completely changed the look of our home and made our living room feel much more cozy. I have already recommended you to some friends and cant thank you enough for making sure my wife was happy.
Adam
Idaho Falls, ID
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Mark from Classic Flooring went the extra mile for me. I needed to replace a bedroom carpet with laminate flooring before my tenant moved in. Another contractor had bailed on me at the last minute and I was scrambling to find a flooring contractor to complete the job on very short notice. Mark came to my rescue, all the way to Jackson Hole, Wyoming. I am eternally grateful to Mark for coming through for me on such short notice. Thank you, Mark!
Valerie
Jackson Hole, WY
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