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How To Sand Concrete

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Concrete sanding is critical to the finishing work of concrete floors, walls and any other structures that have concrete work and need to be made to shine. Sanding your concrete floor, wall, countertop, and other concrete structures is a great way to make your concrete fittings shine. But to do this you have to know how to do concrete sanding, this you have to do with specialized tools or materials depending on the type of sanding you want to do. In this post you’ll learn how to sand your concrete structures.

Can You Sand Concrete?

Yes, you can sand concrete. Sanding concrete can be useful for smoothing out rough surfaces or preparing the surface for painting or staining. To sand concrete, you will need a sanding machine and coarse-grit sandpaper. It is important to use a sandpaper grit that is specifically designed for concrete, as regular sandpaper may not be abrasive enough to smooth out the surface of the concrete. It is important to wear protective gear, such as a dust mask and eye protection, as the sanding process can generate a lot of dust.

Why You Should Sand Concrete

There are several reasons why you should consider sanding concrete, including:

  • Sanding concrete can smooth out rough surfaces, making the surface easier to clean and maintain
  • Sanding can help to remove stains and other blemishes from the surface of the concrete, improving its appearance
  • Sanding can help to increase the longevity and durability of the concrete by creating a smooth and even surface that is less susceptible to damage
  • Sanding can improve the slip resistance of the concrete, making it safer to walk on
  • Sanding is an important step in the process of refinishing or resealing concrete floors or surfaces

Overall, sanding concrete can provide many benefits and is an important part of maintaining and improving the appearance and functionality of your concrete surfaces.

Concrete Sanding Tools

There are so many tools that are involved in the sanding of concrete surfaces and structures. To sand concrete, you will need the following tools:

  • A sanding machine or a sandpaper in different grit sizes (starting with a coarse grit and moving to a fine grit)
  • A sander
  • A dust mask to protect your lungs from inhaling the concrete dust
  • Safety glasses to protect your eyes from the dust
  • A broom or a vacuum cleaner to remove the concrete dust from the surface

Steps on How to Sand Concrete

To sand concrete, you will need the right equipment and tools in addition to methodical focus. Sanding concrete requires a high level of detail and skill, hence it is advisable to hire a professional to do the sanding for you. To sand concrete follow these steps as explained below:

  • Gather the necessary tools and materials, including a power sander or sanding block, sandpaper in varying grits, a dust mask, safety goggles, and a vacuum or broom for cleaning up debris.
  • Prepare the concrete floor for sanding, by clearing the area of any debris or obstructions, and making sure the concrete surface is clean and dry before you start sanding
  • Begin with a coarse grit sandpaper, such as 40-grit, to remove any rough or uneven areas on the surface of the concrete. Use a power sander or sanding block to move in a circular motion, applying even pressure as you go.
  • After the rough spots are removed, switch to a medium grit sandpaper, such as 80-grit, to smooth out the surface and remove any remaining imperfections. Continue sanding in a circular motion until the surface is evenly smooth.
  • For a polished finish, switch to a fine grit sandpaper, such as 120-grit, and continue sanding until the surface is as smooth and polished as desired.
  • Once the sanding is complete, vacuum or sweep up any debris and use a damp cloth to clean the surface of any remaining dust.
  • Allow the concrete to dry completely before applying any sealant or protective coating, if desired.

FAQs on Concrete Sanding

What tool is the best for sanding concrete?

There are a plethora of tools available in the market for sanding concrete, but the orbital sander stands out among the lot, as one of the best concrete sanding tools. The orbital sander will greatly reduce your sanding time, and provide your concrete with consistent polish.

Can I sand concrete with regular sandpaper?

No, regular sandpaper is not abrasive enough to sand concrete. Concrete is a very hard material, and regular sandpaper is designed to sand wood and other softer materials. To sand concrete, you will need to use a sandpaper with a grit rating of at least 60-80.

Can I sand down concrete by hand?

Yes, it is possible to sand down concrete by hand using a sanding block or sandpaper. However, this can be a labor-intensive and time-consuming process, and it may be more efficient to use a power sander for larger areas of concrete.

Can rough concrete be smoothed?

Yes, rough concrete can be smoothed by using a concrete grinder or sander to remove rough or uneven areas. The concrete can then be finished with a smoothing agent or concrete sealer to give it a smooth, polished appearance.

Can I use a grinder to smooth out concrete?

Yes, you can use a grinder to smooth out concrete. Grinders are commonly used for this purpose as they can effectively remove surface imperfections and create a smooth, polished finish on concrete surfaces.


Concrete sanding helps to make concrete surfaces become smooth and give off a fine polished look, that sometimes makes it hard to know that the surface is made of concrete. Concrete sanding can be done using several types of tools including sander, grinder, sanding machine, etc. Without these tools concrete sanding will not be possible. It is good to note that when sanding concrete, you are required to wear protective gears, to protect your eyes, face, and nostrils. Some of the protective devices for concrete sanding include dust mask, protective safety glasses, protective gloves, etc.

Trisha Mae Raymundo
Trisha Mae Raymundo

Senior Writer and Editor of The Home Spot.