Another common hardwood floor malady is the development of gaps between planks. The most common causes of gaps between the boards is Mother Nature. Wood shrinks as it dries out, and it expands when it gets wet and humid. That regular expansion and contraction over time is the most common cause of gaps, and is the main reason why most gaps are seasonal in nature. Perhaps your best plan of action is to exercise patience.
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
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.
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. 
It can be sanded down and refinished five, six, even seven times. And, if maintained properly, you won’t have to do it for 20 years. Refinishing a floor may be messy and troublesome, but most homeowners learn to live with it. After all, it costs five times as much to replace hardwood floors than it does to refinish them. For some people that is reason enough. Hardwood Floors
Solid hardwood flooring adds character, warmth and value to any room in your house. Our selection of pre-finished solid hardwood flooring offers you a variety of finishes, widths, lengths, and colors to match your style, whether it is rustic or modern. There are lots of choices including oak, walnut, maple, birch, cherry and exotic hardwoods. We offer exceptional hardwood floors that will help you enhance the look of your home. Hardwood Floors