The easiest way to sand a floor involves using the right tools (drum sander for big areas, edge sander for corners), prepping the floor (countersinking nails), moving methodically with 50% overlaps, and working through grits (coarse to fine), always keeping the drum off the floor when starting/stopping to avoid gouging, but for true ease, hiring professionals is often the simplest method for a flawless result, though DIY is manageable with the right approach.
Common Mistakes to Avoid in Orbital Sanding for Floors
In general, sanding a floor isn't a difficult or complicated job. It's hard work but if you take your time it should be perfectly doable on your own. The machines are really easy to use on your own, too.
The primary advantage of machine-sanding is its efficiency. It's significantly faster than hand-sanding and requires less physical effort. Machine sanders are particularly effective for larger floor areas, providing a consistent finish over expansive surfaces.
For intricate patterns or delicate floors, hand sanding may be the safer option to avoid damage. Conversely, for large, flat areas or when working with harder wood types, machine sanding is generally more effective.
The 5 most common mistakes with a random orbital sander are pressing too hard, not sanding progressively, lifting the sander while it's running, skipping grits, and not cleaning the dust. These mistakes cause swirl marks, uneven surfaces, and reduce the tool's effectiveness and sanding quality.
A common reason people choose to sand floors themselves is to save money. However, it's important to factor in the costs of hiring the tools and buying the necessary products. And when considering the value of your own time, cost-saving is often minimal.
The Golden Rule of Sanding means not skipping more than one grit through each step of sanding a surface. This is a basic rule anyone should follow whether they are working with metal, wood, or any other surface. Every scratch you make must be removed by the next finer grit.
The "Rule of 3" in flooring is a design guideline suggesting you use no more than three different flooring materials (like hardwood, tile, carpet) or three variations (tones, textures) throughout your home for a cohesive, less cluttered look. It promotes visual harmony by pairing functional needs (tile in bathrooms, carpet in bedrooms, wood in living areas) with a limited palette, creating intentional transitions rather than a "patchwork" effect, and can also refer to sales strategies offering three price points or styles.
Professionally sanding and polishing floors typically costs between $30 to $110+ per square metre, varying greatly with finish (water-based, solvent-based, oil, stain, lime wash), floor condition (repairs, nail removal add costs), complexity (edges, small rooms cost more), and your location, with standard clear coats at the lower end and premium finishes like lime wash at the higher end.
Not Sanding Diagonally
Many floors have subtle high and low spots, and sanding in a straight line can miss these areas or exaggerate the unevenness. Diagonal sanding ensures a more even surface because the sander passes across the grain at an angle, allowing it to smooth out any irregularities more efficiently.
Technique
The best way to know when you're done sanding is to scribble a light pencil line across your wood before you start. Once the line is gone, move up to the next grit. Repeat up to the highest grit sandpaper, then wet your wood with mineral spirits to confirm there are no remaining marks.
Think of an orbital as the best all round sander - they are more substantial and are better for larger jobs/surfaces. Palm sanders are best for small materials or finish work.
The three biggest culprits that ruin otherwise great projects are: Tipping the sander while it's running, which creates gouges and uneven surfaces that are difficult to repair. Applying too much pressure to the sander, which can cause burn marks, uneven material removal, and premature wear on your sandpaper.
Lightweight and easy to control, orbital sanders are suitable for both beginners and experienced users. They work well on flat surfaces and can handle contoured areas, although they are best for light to medium sanding tasks rather than heavy material removal.
The best DIY sander depends on the project, with Random Orbital Sanders like Makita, Bosch, DeWalt, or budget-friendly Black+Decker being top all-around choices for smoothness and versatility. For detailed work, the triangular-headed Detail Sanders (Bosch Mouse, Milwaukee), while Ryobi offers great cordless options for battery convenience, and high-end Festool provides professional results if budget allows. Choose based on project scale, desired finish, and budget.
Skipping grits or using the wrong sandpaper
A common mistake is skipping sandpaper grits or using the wrong type of sandpaper for the job. Starting with too fine a grit on a heavily damaged floor will be inefficient, while starting with too coarse a grit can leave deep scratches that are difficult to remove.
But the sad truth is that sanding is not like renting a Rug Doctor—it will take at least four passes, each with a progressively finer level of sandpaper, to truly refinish most old floors. And the hardest thing you're going to do on the project is to determine the perfect grit starting pass for your floor.