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88 Homeowner’s Handbook to Real Wood Floors Homeowner’s Handbook to Real Wood Floors
Each species of hardwood has a dierent Each species of hardwood has a dierent
level of hardness. Some common domestic level of hardness. Some common domestic
species like walnut, cherry, and birch are species like walnut, cherry, and birch are
less hard in comparison to other common less hard in comparison to other common
domestic species like maple, hickory, and oak.domestic species like maple, hickory, and oak.
The hardness of solid wood is measured The hardness of solid wood is measured
according to a system called the Janka according to a system called the Janka
Scale. The Janka Scale gives a good Scale. The Janka Scale gives a good
indication of how well a wood species can indication of how well a wood species can
be expected to withstand dents and dings. be expected to withstand dents and dings.
The scale is determined by the amount of The scale is determined by the amount of
pound-force required to push a .444-inch pound-force required to push a .444-inch
diameter steel ball halfway into the wood. diameter steel ball halfway into the wood.
Ratings for both domestic and imported Ratings for both domestic and imported
species are included in the scale; however, species are included in the scale; however,
none of these values apply to engineered none of these values apply to engineered
wood ooring. While Janka values give wood ooring. While Janka values give
a general sense of how hard solid wood a general sense of how hard solid wood
is, other factors also contribute to the is, other factors also contribute to the
durability of wood as well. This can include durability of wood as well. This can include
things like how the wood is cut and the things like how the wood is cut and the
nish that is applied to the wood.nish that is applied to the wood.
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