How to Grind Concrete With Angle Grinder Professional Advice

An angle grinder is a tool for grinding concrete, polishing, cutting, and sharpening surfaces. It can be used for all types of materials, like stone, concrete, ceramic, and metal. With the right type of grinding wheel, an angle grinder can be used to grind down the rough edges of a concrete surface. This is a simple process that requires a few safety precautions and the correct tools. Follow the steps listed below in order to learn how to grind concrete with an angle grinder safely and effectively.

How to Grind Concrete With Angle Grinder?

To grind concrete with an angle grinder, start by attaching a diamond grinding disc to the angle grinder. Then, turn the grinder on and slowly move it across the surface of the concrete, making sure to keep the grinder constantly moving to avoid damaging the surface. Once the entire concrete surface has been ground, use a vacuum to clean up any dust or debris that may remain.

Can I Use an Angle Grinder to Level Concrete?

Grinding concrete with an angle grinder is a good method to level out any irregularities in a concrete surface. An angle grinder is a handheld tool that can be used for a variety of different grinding and cutting applications. When used with the correct abrasive disc, an angle grinder can easily grind concrete and even remove excess material. When using an angle grinder, it is important to take safety precautions and use the correct type of disc for the job.

Why You Should Use an Angle Grinder for Smoothing Concrete?

An angle grinder is a great tool for grinding and smoothing concrete surfaces. It is an incredibly versatile tool that can be used for a variety of other tasks as well, such as cutting, sanding, and polishing. An angle grinder is also much faster than hand-sanding and can achieve a much smoother finish. Additionally, it is a relatively inexpensive tool, making it an ideal choice for the do-it-yourselfer. And, as long as you use the right type of grinding wheel, it is very safe to use.

What Tools Are Needed

To use an angle grinder concrete, you will need a few tools, including a good quality angle grinder, safety glasses, a dust mask, and a grinding wheel or stone. You may also need a chipping hammer, chisel, and vacuum cleaner, depending on the job. Safety is paramount when using an angle grinder, so make sure to dress appropriately in safety glasses, gloves, and a dust mask. Also, be sure to read the instructions and safety warnings that come with the angle grinder before use.

How to Grind Concrete With Angle Grinder: Step-By-Step

Grinding concrete with an angle grinder is a good technique to prepare concrete surfaces for painting or finishing as well as to roughen up concrete surfaces for decorative purposes. However, it’s important to use the correct angle grinder for the job and to follow safety guidelines in order to avoid damage to the material and injury to yourself. Here are the main steps for grinding concrete with an angle grinder efficiently and safely:


The first step is to determine the type of concrete you are going to be grinding. Different types of concrete require different types of grinding wheels and techniques. You may even need to experiment with different wheels and techniques to find the best results for your particular type of concrete. Also, make sure to check the manufacturer’s instructions for using the grinder, as some may require special safety precautions.


One of the most important things to consider when using an angle grinder is safety. Be sure to wear protective safety glasses, a face shield, a respirator, and full-length clothing. Wear earmuffs or other hearing protection to protect your ears from the loud grinding noise. Also, make sure to keep the grinding disc away from your body and any flammable materials.

Start by Cleaning the Surface

Before you begin grinding, make sure you clean the surface of the concrete thoroughly. This will help to ensure that you get a smooth finish, and it will also help to prevent dust from flying up into the air. Also, inspect the concrete for any cracks or damage that could affect the grinding process.

Prepare the Angle Grinder

Before you begin, attach the grinding disc to the angle grinder. Securely tighten the nut onto the disc, making sure that it is firmly in place. Additionally, check the disc for any cracks or chips, as these can cause the disc to break or fly off during the grinding process. Remember to use the proper type of disc for the material you’re grinding, such as a diamond-coated disc for concrete or a tungsten carbide disc for harder surfaces.

Get Grinding

Once the disc is attached, start the angle grinder and begin grinding the concrete. Make sure to apply light pressure and move the tool along the surface in a uniform motion. Work your way around the area, and be sure to cover the entire area. Also, be sure to keep the angle grinder moving to avoid overheating the concrete or damaging the disc.

Correct Any Imperfections

If you notice any imperfections, such as holes or bumps, use the angle grinder to smooth them out. Make sure to move the grinder slowly and evenly to achieve a smooth finish. This will ensure that the finished surface is even and uniform.

Clean Up

Once you’ve finished grinding, turn off the angle grinder and remove the grinding disc. Carefully inspect the area for any leftover debris and clean it up. You can then use a vacuum cleaner to pick up any dust particles.

Are the Grinders Best Tools for Grinding Concrete?

man holding an angle grinder

There are many types of tools available for grinding concrete, and the best tool for any given project will depend on the particular job being done and the preferences of the person doing the work. Some of the most common tools used for grinding concrete are angle grinders, floor grinders, handheld grinders, disk grinders, and scarifiers. Here are some of the advantages of using these tools to grind concrete:

Angle Grinders

Angle grinders are highly portable, making them ideal for small jobs and tight spaces. They are also relatively inexpensive, making them a good choice for DIY projects. However, angle grinders can be difficult to control, and they can kick up a lot of dust and debris.

Floor Grinders

Floor grinders are larger and more powerful than angle grinders, making them better suited for larger jobs. They also provide better control than angle grinders, allowing for better precision in the grinding process. However, floor grinders are more expensive and less portable.

Handheld Grinders

Handheld grinders are similar in size and shape to angle grinders but are designed to be used with diamond-tipped grinding discs. Because of their smaller size, handheld grinders offer better maneuverability and access to tight spaces. They also generate less dust than angle grinders. However, they can be more expensive than angle grinders and are not as powerful.

Disk Grinders

Disk grinders offer a more powerful motor than angle grinders, allowing for faster and more aggressive grinding. They are also heavier and less maneuverable than angle grinders, making them better suited for larger projects.


Scarifiers are designed to remove large amounts of material from concrete surfaces and are usually used for heavy-duty grinding jobs. They can also be used to create decorative designs on concrete

In general, angle grinders are better for smaller areas of concrete, while floor grinders are better for larger, flatter surfaces. Handheld grinders are the most versatile and can be used for a variety of applications. Overall, all of these tools can be used for grinding concrete, but the best tool for any given project will depend on the individual job and the preferences of the person doing the work.


What angle grinder disc for concrete?

The best angle grinder disc for concrete is a diamond-tipped, turbo-style grinding wheel. It is specially designed to cut through hard surfaces like concrete, brick, and stone. It is also great for removing old adhesive, epoxy, and other hard materials. Always ensure that the disc is rated for the material you are working with and the speed of your angle grinder.

What can I use to grind down concrete?

An angle grinder is the most common tool used to grind down concrete. You can use a variety of abrasive discs with an angle grinder to effectively grind down concrete. You can also use diamond blades for an angle grinder for concrete, though these are more expensive and best used for larger projects.

Should you grind concrete wet or dry?

Generally, it is best to grind concrete dry since wet grinding can cause the concrete to become too slippery. Additionally, wet grinding can also create a lot of dust that can be difficult to clean up. If you do choose to grind concrete wet, it is important to use a good quality wet grinder or polisher to ensure a safe and efficient job.

Final Thoughts

Grinding concrete with an angle grinder is a good technique to prepare concrete surfaces for painting or finishing and to remove old coatings. It is important to keep the concrete surface wet and use a diamond blade to prevent damage to the material. Safety glasses and a dust mask should be worn to protect against flying particles and dust. Keep the angle grinder moving at all times to avoid narrowing the concrete and creating deep gouges.

I hope this guide has been helpful in teaching you how to grind concrete with an angle grinder. If you have any questions or comments, please leave them below. I’ll be happy to answer them!

Sean Chapman
Sean Chapman

“A good tool stays with you for many years and choosing carefully ensures the job is done right, your work is neat, and the tool is always a pleasure to use”

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