116% harder than Red Oak (1) 12% harder than Red Oak (11) 123% Harder than Red Oak (4) 125% harder than Red Oak (2) 141% harder than Red Oak (2) 15% softer than Red Oak (2) 165% harder than Red Oak (2) 174% harder than Red Oak (5) 18% softer than Red Oak (1) 185% harder than Red Oak (4) 198 % harder than Red Oak (2) 2% harder than Red Oak (2) 2% Softer than Red Oak (1) 25% softer than Red Oak (1) 28% harder than Red Oak (1) 30% harder than Red Oak (8) 33% harder than Red Oak (2) 41% harder than Red Oak (7) 43% harder than Red Oak (1) 5% harder than Red Oak (8) 53% softer than Red Oak (1) 6% harder than Red Oak (14) 67% harder than Red Oak (5) 74% harder than Red Oak (2) 81% harder than Red Oak (2) 82% harder than Red Oak (2) 9% softer than Red Oak (1) about the same as Red Oak (7) Benchmark at 1290 on Janka Scale (37) Hardwood Floor
There are some characteristics that are common to each category: solid wood is more frequently site-finished, is always in a plank format, is generally thicker than engineered wood, and is usually installed by nailing. Engineered wood is more frequently pre-finished, has bevelled edges, is very rarely site-finished, and is installed with glue or as a floating installation.  Hardwood Floor
To fix a buckled floorboard, you need to be able to access the floor from below. The way to tackle this problem is to put weight on the buckled area from above — a cement block works well. Then install a 1 1/4-inch screw in the buckled flooring from below. Allow the screw to penetrate only halfway into the flooring, or it may come up through the finished surface. Driving the screw through the subfloor and into the flooring pulls the flooring down against the subfloor and gets rid of the buckled spot. Hardwood Floor
First, most people are unable to successfully refinish the floors themselves. It takes a lot of experience to refinish properly. Most people can’t get it smooth/even and also don’t realize that you need to sand them 3 times before putting the stain on. It’s even harder to do it right if they are pine or maple floors (and if they are, they require conditioner before stain is applied). Also, once the floors have been sanded unevenly by a non-professonal, it’s even harder to correct due to the waves usually created by the non-professional.
Solid wood flooring is milled from a single piece of timber that is kiln or air dried before sawing. Depending on the desired look of the floor, the timber can be cut in three ways: flat-sawn, quarter-sawn, and rift-sawn. The timber is cut to the desired dimensions and either packed unfinished for a site-finished installation or finished at the factory. The moisture content at time of manufacturing is carefully controlled to ensure the product does not warp during transport and storage. Hardwood Floor
Solid hardwood floor planks are made from a piece of wood and made to be anywhere from 18 to 20 mm thick. The boards are made with a tongue and groove to fit together for installation. Depending on the species of wood, certain floors will be harder than others. The harder the floor, the less susceptible it is to dings and scratches. The floor can be sanded and refinished several times to restore its beauty, with the total number of times being determined by the depth of the tongue from the top of the plank. Denver Hardwood Flooring
For example, moisture can be a factor, as variations in moisture can lead to gapping and warping. For this reason, installing hardwood flooring in full bathrooms is not recommended because of the fluctuating moisture levels. Follow manufacturer recommendations relating to moisture before selecting and installing hardwood. For more protection against moisture, use a moisture barrier.
Eliminate any problem spots to make the subfloor level. Sand minor humps down with a hand-held or orbital sander to make the subfloor level. To fill any dips or low spots, use a leveling compound (also known as floor patch). Mix up the compound according to package directions, fill in the dips, then pull your straight piece of lumber back and forth over the spot to flatten and level it with the rest of the subfloor. Hardwood Floor