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
Hardwood floors can last a long time, but eventually they need to be replaced. Luckily, it's a pretty straightforward process! Use a circular saw to cut the old hardwood into pieces, then remove the old flooring. Prepare your subflooring so that it's clean and perfectly level. After that, choose your replacement flooring and follow the process for installing that particular type of hardwood! Denver Hardwood Floor
Generally, hardwood floors need to be buffed every 3–5 years. The process usually takes about one day. Buffing refers to the process of using a stand up floor buffer. The floor is abraded with 180 grit screen on the buffer. This allows for the new coat of finish to mechanically adhere to the floor. This process works with great results as long as the floor hasn't had any waxes or synthetic cleaners. Denver Hardwood Floor
Price is the first obvious variable to consider. It is almost always cheaper to refinish your floor than to replace it. When replacing, you must consider the cost of the new wood as well as the installation. You can offset much of this cost by installing the floor yourself, but this is a very invasive process that requires specialized knowledge and precision. You can typically refinish a wood floor yourself, with just a few inexpensive solutions. Denver Hardwood Flooring

Local Retailers: Local home improvement stores often carry a number of engineered wood flooring products in stock. Additionally, local flooring stores can provide samples that let you see how the color and style of the engineered floor will look in your home. Either option may offer you an on-site estimate to give you a better idea about what your project could cost.

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.[7] Hardwood Floor