The Janka scale rates the relative hardness of wood. The Janka hardness scale is a good tool to use when considering your choice of hardwood flooring species. It is perhaps the most important test to measure the hardness of the wood.
The higher the number the harder the wood. These ratings were determined using the Janka hardness test which measures the force required to embed a .444 inch steel ball to half its diameter in the hardwood meant for flooring.
The hardness is expressed numerically as the pounds per square inch of pressure required to sink the ball into the species of hardwood meant for flooring; the higher the number the harder the hardwood for flooring. The Janka hardness test is done on both the side and end of the hardwood because hardness varies with the grain of the hardwood. Janka hardness scale is the industry standard for judging the ability of various hardwood flooring species to withstand denting and wear. It also indicates the effort required to either nail or saw the particular wood and therefore, also helps determine whether the hardwood is suitable for flooring or not. Red Oak hardwood flooring, which has a Janka rating of 1290, is the flooring industry benchmark for comparing the relative hardness of different wood species.
Following are some of the most popular hardwood species used in flooring along with their respective hardness ratings according to the Janka hardness test:
The majority of hardwoods and many types of softwood 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 spoil a hard enough impact.
Ultimately, No floor is “Scratch Proof” any appliances and furniture can eventually put down dents on hardwood flooring. Fortunately, wood floors can be restored or polished or refinished the floor if required. Using floor protectors under furniture is better way to prevent scratches and gauges. Also, keep the pads clean and replaced if damaged. Keep your floor clean using rugs at entrances and also keep your pet nails trimmed all the time to get rid of dents on your floor.
Another factor to consider is stability. Stability refers to how much an installed wood floor expands and contracts in the change of humidity. So noticing all these, you can choose a floor that you love and look beautiful for years to come.