Can concrete be sanded?

Asked By: Veronika Aberlieb | Last Updated: 5th March, 2020
Category: hobbies and interests woodworking
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The good news is that concrete can be sanded with relative ease when the proper equipment is used, such as a good concrete sandpaper (made using diamond instead of sand). There are also three different types of sanded finish you can achieve, depending upon the tools and amount of removed material.

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Similarly, can you sand concrete with regular sandpaper?

When sanding concrete, begin with the coarsest sanding disc, which is the lower number, and work in succession to the finer-grit discs. To remove only a small rough patch or uneven area, you can use 1000-grit automobile black sandpaper, which is very fine and will not remove much of the concrete.

Beside above, how do you sand a concrete floor by hand? How to Scuff Sand Concrete

  1. Mix a few drops of dish detergent into a bucket of warm water.
  2. Hang plastic sheeting over doorways to keep dust from the rest of the house.
  3. Attach 180-grit sandpaper, which is a fine grit, to a pole sander, hand sander or floor sander.
  4. Wash the dust from the floor with another bucket of water with dish detergent.

Just so, what do you use to sand concrete?

Your sandpaper choice depends on how much sanding must be done. Choose coarse-grit sandpaper, in the 40- to 60-grit range, for basic sanding and stripping. For smooth finishes and removing minor imperfections, use 80- to 120-grit sandpaper. For the smoothest finish use superfine sandpaper, 200- to 400-grit or higher.

What do you use to sand concrete countertops?

If you've dry-sanded your concrete and still have a cement-cream finish, then the easiest thing to do is to wet sand by hand using 320 to 400 grit silicon-carbide wet/dry sandpaper. Silicon carbide is much harder than concrete, so it abrades the surface easily, but won't remove your cream finish.

26 Related Question Answers Found

How do you smooth hardened concrete?

There are basically two methods used to smooth off hardened concrete surfaces. They are dry grinding and wet rubbing. Dry grinding is done of dry concrete surfaces to remove fins and marks caused by forms.

What tool do you use to smooth concrete?

use steel finishing trowel for smooth texture
To finish the concrete, use a steel finishing trowel to achieve a smooth texture. The tool brings water to the surface of the concrete.

Can you grind concrete smooth?

Move the wheel/disc over the surface of the concrete quickly and smoothly. Make multiple passes over a high spot to grind it down. Do not simply hold the grinder in one spot, as this will grind channels into the concrete based upon the edge of your disc or wheel.

Can I polish concrete with an orbital sander?

There are a few different looks you can achieve when you polish a concrete countertop. You will need an orbital hand held sander or a hand polisher. You will also need wet diamond polishing pads from 50 grit to 3000 grit depending on the look you are trying to achieve.

What tool is used to sand concrete?

Sanding Concrete
If you have concrete that is going to be exposed architecturally, you can sand it by hand using wet and dry sandpaper or an orbital sander.

Can you polish concrete by hand?

Polished concrete is also a terrific way to update your home without a lot of expense. A small section of concrete can be polished with a hand sander. You can't beat the look of polished concrete.

How do I sand my self Levelling compound?

Use a trowel to level the compound as much as possible while it is still wet and pliable. Only use small amounts at a time to prevent quick drying before it is level. A grinder can be used to sand down bumps in dried compound. For smaller bumps, a course sandpaper on an electric sander is effective.

How do you smooth a rough concrete garage floor?

Preparing the Floor
  1. Put on long pants and a long sleeve shirt.
  2. Open the garage door and any windows available.
  3. Strip off paint, sealers or any other coatings on the floor.
  4. Clean the floor thoroughly.
  5. Scuff the floor with a coarse wire brush.
  6. Fill in thin cracks, those less than 1/4-inch, with concrete crack filler.

How do you grind and polish concrete?

Grind with an 80-grit metal-bonded diamond. Grind with a 150-grit metal-bonded diamond (or finer, if desired). Apply a chemical hardener to densify the concrete. Polish with a 100- or 200-grit resin-bond diamond, or a combination of the two.

How much will a concrete grinder remove?

For example, as a grinder they are designed to remove a minimal amount of concrete from the surface—as little as a few thousandths of an inch. Therefore, if an end user wishes to remove a half-inch of concrete on a 10,000-square-foot floor, a low-speed surface grinder is not the ideal machine.

How do you grind concrete with an angle grinder?

Hold the grinding pad at a 45-degree angle to the concrete and pull the trigger. Hold the grinder away from you, make contact with the concrete and then pull the grinder towards you in a smooth, slow and consistent manner. Do not force the grinder into the concrete.

How do you smooth out a basement floor?

Fill depressions with patching compound, troweling them smooth and feathering them to the surrounding floor. Rent a concrete grinder to level high spots. Check the surface of your repairs with a straightedge, continuing to fill or grind until the floor is flat and level. Cracks and Holes.

How much does it cost to polish a concrete floor?

Polished Concrete Cost
Economical: You can expect to pay between $3 and $12 per square foot for polished concrete, depending on your location and the complexity of the project.

How do you sand a stained concrete floor?

Pour about one tablespoon of water onto the floor, then let it sit for 10 minutes or so. If the concrete floor completely absorbs the water, you can then stain it without sanding. However, if the water remains on the surface, you will need to sand the floor to ensure proper penetration.

Do you have to polish concrete countertops?

Allow the concrete countertop to cure for a minimum of 10 days before polishing. Concrete younger than that is still too soft to polish well, and concrete older than a month will be more difficult to polish and will use up more pads.

How much is it to make concrete countertops?

According to, the average cost per square foot is $65 to $135, and the average cost of installation is $40 to $50 per hour, per person. Consider how quickly you need them, too: Once poured, it takes 28 days for concrete counters to fully cure.