Strip, plank and wide plank
Board-width categories defined by the flooring standard, not descriptive terms a showroom is free to apply as it likes.
The NWFA/NOFMA standard defines them by measurement. Strip is less than 3 inches, or 76.2 mm. Plank is 3 to 5 inches. Wide plank is greater than 5 inches.
The same standard fixes solid flooring thickness at .750 inches — 19.05 mm — with a tolerance of plus or minus .015 inches, or .38 mm.
Width is not only a look. The permitted moisture differential between flooring and subfloor is tighter for wider boards: no more than 4 percentage points for strip under 3 inches, and no more than 2 for flooring 3 inches or wider.
Related
Terms this one depends on
- Flooring gradeAn appearance classification for finished flooring. The standard states outright that all grades are equally strong and serviceable in any application.
- Moisture differentialThe difference between the moisture content of the flooring material and that of the subfloor, which must sit inside an acceptable range before installation.
- Solid hardwoodFlooring milled from a single piece of wood, typically 3/4" (19 mm), with a generational wear layer and high sensitivity to humidity swings.
Provenance
Where this definition comes from
Framework pillars this term is material to
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