9017 South Pecos Road • Suite 4355 • Henderson, Nevada 89074
Telephone: (702) 242-9663    Facsimile: (702) 914-1849

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hardwood glossary

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Janka Hardness Rating

The Janka Hardness Rating applies to both engineered and solid wood flooring and measures the amount of force needed to push a steel ball into the wood to a depth of half the ball's diameter. The higher the Janka Hardness Rating, the more durable and resistant to damage the floor generally is.

Job Finished

Refers to floors that are installed and then finished rather than being finished at a factory.

Joint Staggering

The act of installing flooring so that the joints are staggered and do not meet each other side by side.

Jointed Flooring

Flooring that has no tongue or grove and is usually end-matched, which makes replacing strips easier.


Parallel beams below the subfloor used to support floors and ceilings.