You’re ready to start your concrete project and are getting your materials and tools together. For most concrete projects, there are going to be quite a few things that you need. One of the first tools that you will probably use will be a concrete grinder. A concrete grinder will help prepare your surface for whatever work you need to do and depending on the type that you use and the attachments that come with it, it can even help finish the surface as well.

Concrete grinders are no small purchase. You can easily spend upwards of thousands of dollars, especially on commercial models. There are also a variety of attachments and heads that you will need for each project and those can cost up to $50 each. You might also find that for just one project you might need to use multiple concrete grinders.

All of this can add up to an expensive bill very quickly. Luckily, it is really easy to rent these kinds of tools. This will allow you to get the work you need to do done for a fraction of the cost without losing any of the quality in the finished product. By renting whatever concrete grinder you need, you can use it for the amount of time that you need and then send it back and move on with your project. No more buying a tool that you will only use once or twice and then leave it sitting in your tool shed for years.

When it comes to concrete grinders, there are two different types that you need to consider as well as a variety of attachments that you need to decide on. Here are a few things that you can find for renting.

Purpose Of Concrete Grinders 

Concrete grinders like this work best to help remove thin coatings on concrete, such as paint, and can remove dirt, grease, or oil stains. They will leave you with a clean and level concrete surface that is ready to be worked on. Some models can also polish and finish off a concrete surface that leaves you with a professional quality finish.

Concrete grinders are also good because they won’t be highly abrasive and less likely to leave marks are damage the surface you are working on.

Walk-Behind Grinders 

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These concrete grinders are larger and allow you to push them like a lawn mower to do the grinding work you need. You can find single one-head attachment walk-behind grinder or a larger model that has up to four head attachments. These kinds of grinders are usually for commercial use and work best with large concrete projects that require you to cover more surface area quickly.

When you use a walk-behind grinder that has multiple heads, this allows the machine to equalize and won’t pull back and forth like a single head grinder. This gives you more control over the machine as well as the work. You can also find different power sources for walk-behind grinders like electric, gas, or propane.

There are also some models that come with vacuum and water systems that allow you to control the amount of dust that will be produced while grinding. If you have a large area that you are working on or a big project to complete, a walk-behind concrete grinder might be the best option.

Hand-Held Concrete Grinder 

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Like the name says, this concrete grinder is a much smaller tool and you use it much like a power sander. It is a very versatile tool that can allow you to smooth out rough surfaces as well as remove things like small amounts of graffiti, paint, or stains. It’s also handy for roughing up a surface in preparation for a new coating. They are needed for fitting into small or tight spaces that a walk-behind grinder can’t fit into.

While a hand-held grinder isn’t ideal for large projects, you will most likely need it for any concrete project you do for detail work as well as the small spaces.

Different Attachments

The best way to get the most use out of a grinder while you are renting it is to use a variety of different attachments. This will allow you to work on multiple steps of your project with just one machine. Both hand-held and walk-behind grinders can be used with multiple attachments, each meant for a specific job.

Silicon-Carbide Grinding Stones

This attachment works best for polishing or finishing surfaces. It has a leveling height of about 1/16th of an inch so it isn’t able to remove heavy coatings that might be on the surface. It also clogs easily, which can make it a hassle if you are trying to use it while preparing your concrete surface. Use this as a smoothing finisher for the best results.

Diamond-Segmented Abrasives 

If you have a surface that is covered in a hard coating, like an epoxy, a diamond-segmented abrasive is going to work the best. These grinding attachments are set in a metal matrix and as it works to remove the coating, the matrix will wear away to reveal more diamond coating. This keeps it strong and working like new for a longer time. It is also good for removing thinner coatings as well as polishing surfaces.

Tungsten-Carbide Inserts 

This is the attachment that you want to use if you need to remove thick coatings like resin, tar, or other adhesives. It is a stronger insert and will work quicker than a silicon-carbide grinding attachment. Tungsten-carbide will work best on surfaces and coating that is thicker than 1/16th of an inch.

Choosing Grinders And Attachments 

It is most likely that you will need to use multiple attachments for your project, so you will have to decide what type of work needs to be done. If you are stripping a thick and heavy coating, stick with the tungsten-carbide and diamond inserts that will allow you to work quickly and efficiently. If you don’t have to do heavy duty work like that you can use the silicon-carbide attachment.

As for the kind of grinder you use, that will depend on the scale of your project. If you have a lot of surface area to cover or are working on a commercial project, you are going to want a walk-behind grinder. A hand-held grinder will probably come in handy for any project that you work on, but it will be your best bet for small home projects.


No matter what type of grinder you need, renting is going to be your most cost effective option. You can get a professional result for a fraction of the price. If you need any help deciding what you need for your next concrete project, do not hesitate to call.

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