Janka Hardness Chart
(listed softest to hardest)
click for enlarged pdf file
|Janka Hardness Scale
The Janka scale rates the relative hardness of wood. We have
listed some of the most popular choices in wood flooring and included
some more exotic species for your reference and comparison.
The higher the number the harder the wood. These ratings were
determined using the Janka Hardness Test which measures the
side hardness measure of the force required to embed a .444
inch steel ball to half its diameter into the wood. This is one
of the best measures of the ability of wood species to withstand
denting and wear. It is also a good indicator of how hard a species
is to saw or nail.
This should only be used as a general guide when comparing
various species of wood flooring. Depending on where the wood is
harvested the results may vary. Plank construction and
finish are also important factors when determining the durability
and ease of maintenance of any wood floor.
A wood's relative hardness is determined with the Janka
Rating System, which measures the force required to drive a .444
inch steel ball into the wood until half the diameter of the
ball is imbedded in the wood.
The Janka Hardness Scale rating has become the industry standard
for determining whether a given wood is suitable for flooring
material. Red Oak, which has a Janka rating of 1290, is the
industry benchmark for comparing the relative hardness of
different wood species.
The majority of hardwoods and many softwoods are durable enough
to withstand normal flooring use - especially with proper
installation and finishing. However, no matter the Janka rating,
all wood will dent or mar with a hard enough impact .
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