using the best sanding way for flooring

To achieve the best finish, it’s important to sand your floor in stages using increasingly finer abrasives. Typically, starting with grit 40, then moving to grit 60, and finally using grit 100 is a solid procedure for most wood floors. The initial coarse abrasive aims to remove the old surface coating and flatten the surface.

Make sure to sand along the grain of the wood, not against it, to prevent scratches. Start at one end of the room and work your way towards the other end. Move the sander in a forward and backward motion, ensuring each pass for a smooth and uniform finish.

Polyurethane stands as a top choice for floor finishes. Its durability ensures it can withstand consistent foot traffic, while its resistance covers a broad spectrum of potential damage. We always suggest beginning with relatively rough sandpaper. For instance, in our current home, we opted for 16-grit sandpaper to kickstart the sanding process.

Tips for sanding floors:

Follow the grain

Always sand in the same direction as the wood grain to prevent scratches.

Start at one end

Begin sanding from one side of the room and gradually work your way to the other.

Move back and forth

Utilize a drum sander to move back and forth across sections of 3 to 4 feet.

Overlap your strokes

Ensure overlapping strokes by at least one-third of the belt width to effectively remove scratches.

Use varying grits

Begin with coarse sandpaper, around 36 to 40 grit, then transition to medium 60-grit paper, and finally finish with a finer 100 grit. For well-maintained floorboards, you can start with 40 or 60 grit and progress to 80 or 100 grit.

Consider sanding diagonally

If the floorboards are uneven, begin by sanding diagonally to even them out before proceeding to sand in the direction of the boards.

Control dust

Employ vacuums equipped with HEPA filtration systems to effectively contain dust. Ensure that wood dust doesn’t escape from the sander to the dustbin, keeping the air clean during the sanding process.


Clearing the Room

Before starting the sanding process, it is essential to carefully clear the room of all furnishings, rugs, and any other obstructions. This ensures free access to the entire floor surface, facilitating a smooth and efficient sanding operation. Additionally, object removal prevents potential damage to fixtures and allows for thorough sanding along walls and edges, resulting in a uniform finish across the entire floor area.

Ensuring Floor Cleanliness

Cleanliness of the floor surface is of utmost importance before starting the sanding process. Any debris, dust, or loose particles must be carefully removed to prevent interference with the sanding equipment and to achieve the best sanding results. Using a vacuum cleaner or broom, carefully clean the floor surface paying close attention to corners and crevices. This ensures that the sanding process can proceed smoothly, enabling the removal of imperfections and achieving a pristine finish.

Sanding Stages

Sanding floors usually involve several stages to achieve a smooth and even surface. These steps include coarse sanding, medium sanding, deep spotting, edge sanding, and final finishing. Each stage is essential for progressively refining the floor surface and achieving the desired results.

Coarse Sanding

Coarse sanding is the initial stage of the sanding process, where coarse grit sandpaper is used to remove old finishes, surface imperfections, and uneven areas from the floor. This stage prepares the surface for the next sanding stage by leveling the floor and creating a uniform base.

Medium Sanding

Medium sanding follows coarse sanding and uses medium-grit sandpaper to further refine the floor surface. This stage smooths out any remaining rough patches and prepares the floor to deal with deeper stains or imperfections.

Deeper Stains

At this stage, any deep spots or imperfections that were not fully addressed in the previous sanding stage are targeted for removal. Particular attention is paid to stubborn spots or stained areas to ensure a consistent appearance across the entire floor surface.

Edge Sanding

Edge sanding focuses on sanding hard-to-reach areas around the perimeter and walls and corners. Specialized edge sanders or sanding blocks are used to achieve consistent sanding results so that all parts of the floor receive equal treatment.

Sanding Equipment

Choosing the right sanding equipment is crucial to achieving professional results. Drum sanders, orbital sanders, and handheld sanders are commonly used depending on the size of the job and the type of flooring material. In addition, it is essential to select the appropriate grit sandpaper at each stage of sanding to achieve the desired smoothness and finish.

Equipment Selection

Choosing the right sanding equipment is paramount to achieving the best results in a floor sanding project. Considerations such as the size of the job, the type of flooring material, and the level of accuracy required should guide the selection process. For larger areas, drum sanders are generally used due to their ability to remove old finishes and smooth the surface. Orbital sanders or random orbital sanders are preferred for smaller or more complex areas, offering greater control and maneuverability. Handheld sanders, such as belt sanders or detail sanders, are invaluable for tackling edges and corners that larger machines can’t reach. By carefully evaluating the specific requirements of the project, professionals can ensure that they have the right sanding equipment to achieve superior results.

Selecting Grits

Grit sandpaper selection plays an important role in the effectiveness of the sanding process and the final appearance of the floor. Coarse grit sandpaper, typically 36 to 60 grit, is used for initial sanding to remove old finishes, imperfections, and surface irregularities. As sanding progresses, finer grits are employed to achieve a smoother finish and remove scratches left by the coarser grit. Medium grit sandpaper, from 80 to 120 grit, is suitable for intermediate sanding stages, while fine grit sandpaper, from 150 to 220 grit, is used for the final sand to achieve a polished surface. By carefully selecting the proper grits for each stage of sanding, professionals can ensure that they achieve the desired level of smoothness and refinement in the finished floor.

Sanding Technique

Sanding with the Grain

Sanding with the grain refers to the practice of moving the sanding tool or sandpaper in the same direction as the natural grain pattern of the wood. This technique is essential to achieve a smooth and uniform finish while minimizing the risk of scratching or damaging the wood surface. Sanding against the grain can cause unsightly marks and compromise the integrity of the wood. By following the direction of the grain, professionals can effectively remove imperfections, level the surface, and improve the overall appearance of the floor.

Even Consistent Movements

Maintaining even and consistent movement during the sanding process is crucial to achieving professional-quality results. Whether using a drum sander, orbital sander, or handheld sander, it is essential to ensure that the sanding equipment is moved smoothly and evenly across the floor surface. Uneven or irregular movements can result in uneven sanding and result in an inconsistent finish. Additionally, slightly overlapping each pass helps prevent missed spots and ensures uniformity in the sanding process. By following a disciplined approach and focusing on precision and consistency, professionals can achieve superior results and provide their clients with a flawless finish.

Intermediate Sanding

Addressing Imperfections

Intermediate sanding is an important stage of the floor sanding process, primarily focused on addressing remaining surface imperfections or inconsistencies. This stage involves carefully inspecting the floor for scratches, dents, or other blemishes that may have been missed in the previous sanding stage. Using a keen eye and careful attention to detail, professionals identify and target these imperfections, employing appropriate sanding techniques and tools to correct them. By diligently addressing imperfections during intermediate sanding, professionals ensure that the result is smooth, flawless, and free of any visible flaws.

Using Finer Grits for Smoothness

As the sanding process progresses, finer grit sandpaper is used in intermediate sanding stages to further refine the surface and increase its smoothness. Finer grit, typically 80 to 120 grit, is chosen to achieve a polished and uniform appearance while minimizing the risk of scratches or abrasions. This stage focuses on progressively smoothing the surface, removing any rough patches or inconsistencies left by the coarse grit. By meticulously sanding with fine grit, professionals achieve a refined finish that showcases the wood’s natural beauty and meets the highest standards of quality and craftsmanship.

Final Sanding

Achieving Desired Smoothness

Final sanding marks the end of the floor sanding process, where the primary objective is to achieve the desired level of surface smoothness and refinement. This stage involves meticulous attention to detail and a keen focus on ensuring that the surface of the floor is free of any imperfections or rough spots. Professionals carefully evaluate surface smoothness, using both visual and tactile methods to measure its quality. Using precise sanding techniques and fine-tuning sanding equipment, they strive to achieve a flawless finish that meets or exceeds client expectations.

Using Finest Grit Sandpaper

In the final sanding stage, professionals use the finest grit sandpaper available to achieve the final level of smoothness and polish on the floor surface. The best grit sandpaper typically ranges from 150 to 220 grit, which provides exceptional refinement and a mirror-like finish. This ultra-fine sandpaper has been carefully selected to ensure minimum friction and maximum smoothness while protecting the integrity of the wood. By using the finest grit sandpaper for final sanding, professionals can achieve a premium-quality finish that enhances the floor’s beauty and durability, leaving a lasting impression on clients and visitors alike.

Vacuuming and Cleaning

Removing Dust and Debris

Following the sanding process, thorough vacuuming is essential to remove all dust and debris from the floor surface. Using a high-quality vacuum equipped with a fine dust filter, professionals carefully clean the entire area, including corners and crevices. This step ensures a clean and smooth surface for the application of the finish and prevents dust from contaminating the final result.

Using Tack Cloth for Final Clean

After vacuuming, professionals use tack cloths to further remove residual dust and ensure a pristine surface before finishing. Tack cloths are specially designed to attract and trap dust, providing an ultimate clean that enhances the adhesion and appearance of the finish. By systematically wiping the surface with a tack cloth, professionals achieve a flawless base for finishing, leaving no trace of dust or residue behind.


Applying Desired Finish

Once the floor is thoroughly cleaned, professionals proceed to apply the desired finish, be it stain, sealant, varnish, or wax. Using appropriate application tools such as brushes, rollers, or sprayers, they carefully apply the finish in thin, even coats, ensuring uniform coverage and a consistent look. This step enhances the natural beauty of the wood, protects the surface from wear, and provides long-lasting durability.

Allowing Adequate Drying Time

After applying the finish, it is extremely important to allow adequate drying time before allowing foot traffic or placing furniture on the newly finished floor. Drying time varies depending on the type of finish used and environmental factors such as temperature and humidity. Professionals closely follow the manufacturer’s guidelines to determine the optimal drying time, ensuring that the finish cures properly and achieves its maximum durability and aesthetic appeal.


Regular Cleaning and Upkeep

Proper maintenance is essential to preserve the beauty and longevity of freshly sanded floors. Regular cleaning with a damp mop or cloth helps remove dirt, spills, and other debris that may accumulate on the surface. Additionally, using the appropriate cleaning products formulated for the specific type of finish helps maintain its integrity and shine.

Preserving the Newly Sanded Floors

To prevent premature wear and damage, it’s important to take proactive measures to preserve freshly sanded floors. These include using furniture pads or felt protectors under heavy furniture to prevent scratches and dents, avoiding excessive moisture exposure, and quickly addressing any spills or accidents. By implementing a regular maintenance routine and practicing careful usage habits, homeowners can enjoy the beauty and durability of their new sanded floors for years to come.


At Last


Proper sanding techniques are paramount to achieving professional results in floor refinishing projects. By meticulously following every step of the sanding process, from preparation and equipment selection to finishing and maintenance, professionals ensure that the floor surface is smooth, uniform, and free of imperfections. Sanding with precision, using the appropriate grit, and maintaining consistent movements are essential practices that contribute to the overall quality of the finished product. Additionally, thorough vacuuming and cleaning before finishing, along with allowing adequate drying time, are important steps that ensure the longevity and durability of newly refinished floors. Ultimately, following proper sanding techniques not only enhances the aesthetic appeal of floors but also prolongs their lifespan, providing clients with a beautiful and resilient surface that stands the test of time.

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