Make cuts perpendicular to the direction the wood is laying. Using a circular saw, make single cuts straight across the flooring that are about 1 foot (30 cm) to 2 feet (61 cm) apart. Be sure your cuts are perpendicular to the direction of the wood. Start on 1 side of the room and work your way systematically to the other side, spacing each cut about 1 foot (30 cm) to 2 feet (61 cm) apart.[3] Denver Hardwood Flooring

 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) Denver Hardwood Flooring
Wood flooring is any product manufactured from timber that is designed for use as flooring, either structural or aesthetic. Wood is a common choice as a flooring material and can come in various styles, colors, cuts, and species. Bamboo flooring is often considered a form of wood flooring, although it is made from a grass (bamboo) rather than a timber.[1] Denver Hardwood Flooring
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. Hardwood Floor
– If you want less mess and shorter installation, replacing the floors will usually take less time than refinishing them. Refinishing hardwood floors is messy and time consuming. It’s especially challenging if you are already living in the home and have furniture everywhere. Refinishing you hardwood floors can easily take 4-5 days and during that time you can not have furniture on them nor walk on them. For some homes, this creates logistical nightmares as they can’t stay in the home nor would they want to given the smell and the mess. Alternatively, if you replace the floors with prefinished hardwood, it’s a much faster process, less messy and you can still live in the home fairly easily. I have many customers that have done this simply because they want to avoid the mess created from refinishing the hardwood floors. Denver Hardwood Floor

When it comes to budgeting for this project, you have many factors to consider. Two of the largest considerations include the cost per square foot of the materials and the cost per square foot for installation. To help you understand the potential costs of installing hardwood, we researched the average cost per square foot for traditional and engineered flooring at three different price points. Hardwood Floor
Measure rooms one at a time. It’s easiest to measure rectangles, so if you have an “L-shaped” room, divide it into 2 rectangles and measure them separately. The length of the rectangle multiplied by the width equals the square footage. For example, a room, or section of a room, that is 20 feet long and 12 feet wide produces this formula: 20 x 12 = 240 square feet. If the flooring you are purchasing is sold by the yard, divide the square feet by 9. So, 240 square feet / 9 = 26.667 square yards. Denver Hardwood Floor
It is difficult to compare solid wood flooring to engineered wood flooring due to the wide range of quality in both product categories, particularly engineered. Solid wood has some limitations. Recommended maximum widths and lengths are typically 5" / 127mm wide and 7' / 2100mm long. Solid hardwood is also more prone to "gapping" (excessive space between planks), "crowning" (convex curving upwards when humidity increases) and "cupping" (a concave or "dished" appearance of the plank, with the height of the plank along its longer edges being higher than the centre) with increased plank size. Solid wood cannot be used with underfloor radiant heating.[5] However extra care is necessary with the planning and installation of the heating system and the wood flooring, such as limiting the temperature to 85 °F (29 °C), avoid sharp temperature fluctuations, utilizing an outdoor thermostat to anticipate heating demands, and monitoring the moisture content for the subfloor before installation. Denver Hardwood Floor
Put on gloves, knee pads, and protective eye glasses. You'll be working diligently on your hands and knees for hours to complete this project, especially if you're doing a large space. Invest in a good pair of knee pads to protect your knees. Sturdy work gloves will protect your hands from splinters, and goggles will prevent sawdust and other debris from getting into your eyes.[1]
Sand off any paint or adhesive on the subfloor (if necessary). How pristine your subfloor needs to be depends on what kind of replacement flooring you're installing. If you plan to glue your new hardwood flooring down, sand away any paint or adhesive stuck to the subfloor with an electric sander. If you're installing nail-down, floating, or locking hardwood, you don't need to sand the subfloor.[5] Denver Hardwood Floor Install

This process involves treating the wood by boiling the log in water. After preparation, the wood is peeled by a blade starting from the outside of the log and working toward the center, thus creating a wood veneer. The veneer is then pressed flat with high pressure. This style of manufacturing tends to have problems with the wood cupping or curling back to its original shape. Rotary-peeled engineered hardwoods tend to have a plywood appearance in the grain.[3]

If you get a second opinion and they can’t be refinished, then your best option will be replace them…or wait until you can replace them. Given when the house was built I’m doubting the floors are even, so putting a floating on top will be a really bad option as they will wobble. And, installing wood on top of thin wood is a really bad solution. If your foundation is weak, your floor will be weak and it will creak and separate. Denver Hardwood Floor Install

Although many people speak about hardwood floors as a single building material, it’s important to understand that they can be made from dozens of different tree varieties, and each has a different color, price and durability. Here are a few of the most popular hardwood flooring options, along with some unique characteristics of each and average pricing: Denver Hardwood Flooring
In general, it will almost ALWAYS be less expensive to refinish your hardwood floors. If you replace them, you need to pay for additional wood as well as ripping up and hauling away existing hardwood. If portions of your hardwood are damaged (e.g. pet stains or minor water stains), you can replace these sections and when you refinish them and it will all look new. Even if you have this, it will still be less expensive then replacing the whole floor. Hardwood Floor