Return To Blog

Wood Hardness Testing: Know Your Materials


The Janka scale rates the relative hardness of a species of wood. The scale was invented by Gabriel Janka, an Austrian wood researcher in 1906. It was standardized in 1927 by the American Society for Testing Materials with the score ranging from 0-4000. The simplest way to gauge the number in reference to the wood is: the higher the number, the harder the wood. The hardness is measured by the amount of force required to embed a .444 inch steel ball to half its diameter into the wood. This demonstrates how much wear and tear a certain species of wood can take and can also indicate the amount of work it would take to saw or nail.

However, this test is still just a general guideline when it comes to choosing a species for your Denver hardwood floors. Actually, the results vary based on where the wood was harvested as well as its plank construction and finish. Surprisingly, the hardness of the wood doesn’t affect the price of the wood. It is instead directly related to how accessible and available the species of wood is, rather than its hardness.

Most hardwoods are durable enough to withstand normal use for flooring, especially when properly finished and installed. However, no matter how high the Janka score is, all wood dents with hard enough impact.

When it comes to choosing a hardwood floor for your home, make sure to ask TGB Flooring about different types of species and their durability to make sure it’s right for your lifestyle. Visit our blog to learn more about the types of flooring available and advice for maintaining your hardwood.