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.  Denver Hardwood Flooring
If you have a small, single scratch that’s only noticeable when you get close (like a scratch caused by an excited pet) and your floor has a relatively new finish, try a DIY home solution first. Mix equal parts apple cider vinegar and olive oil in a small cup, and dab the mixture into the scratch. Leave it for the rest of the day, and rub it out. This method often takes care of minor scratches. Hardwood Floors
Some benefits of wood flooring include ease of cleaning, durability, and style variety. Wood floors are much easier to keep clean than carpet and pet hair or dander is quick to remove. They are very durable and with proper care, they will look great for years to come. Plus, wood flooring is available in a multitude of styles and colors guaranteeing there is a look out there for a classic or contemporary home. Denver Hardwood Flooring
Floating installation: A floating installation is where the flooring is laid down in a glueless manner on top of a layer of underlay. The individual planks are locked together, and are not glued or nailed down to the subfloor. By doing this the floor is floating above the underlay, and can be laid on top of existing tile or marble, without the risk of damaging the subflooring.
Glue down engineered hardwood, alternatively. If you don't want to nail down the boards, you do have the option of using adhesive to put engineered hardwood in place. It's a good choice, but won't last as long or be as sturdy as nailed down hardwood. The procedure is very similar to the nail-down process. Follow the adhesive manufacturer's instructions for installation and drying times. Hardwood Floors