How to Choose the Right Concrete Floor Grinder for the Job. Diamond floor grinder

What is a Floor Grinding Machine and How Does it Work?

Concrete surfaces look beautiful when they are first installed. However, over time they can become stained and scratched. To keep your concrete floors looking their best, you will need to invest in a floor grinding machine.

A floor grinding machine, also known as a concrete grinder. is a tool that is used to smooth and polish the surface of the concrete. These machines come in a variety of sizes and shapes, but they all have one common goal: to make your concrete look amazing! In this blog post, we will discuss the different types of floor grinding machines, as well as their benefits. We will also give you some tips on how to choose the right machine for your needs.

What is a Floor Grinding Machine, Exactly?

A floor grinding machine is a powerful tool that is designed to remove stains, scratches, and imperfections from concrete floors. It uses a rotating disc to grind down the surface of the concrete, leaving it smooth and even. You can then use a sealer to protect the floor from future damage.

Concrete floor grinders are typically used for polishing concrete, hardwood floors, and stone flooring. They can also be used for removing paint, adhesives, and other materials from floor surfaces. Both residential and commercial buildings use floor grinders for a smooth and level surface.

Apart from polishing flooring surfaces, it is also used for concrete restoration, refinishing exterior wood surfaces, removing coatings and mastics, grinding tile grout lines, and leveling uneven surfaces. A floor grinding machine requires special attachments depending on the surface you need to work on.

For instance, most floor grinding projects will require a diamond cup grinding wheel. This type of wheel is designed to remove material quickly and easily. It has small diamonds embedded in the surface that help break down the concrete. You can also use it for sanding wood surfaces, removing rust from metal surfaces, and more. As for newly laid stone floors, it is used for honing and polishing the surface to reveal a perfectly smooth finish.

Types of Concrete Floor Grinder Machines

There are many different types of floor grinding machines on the market, but they can be divided into three categories: handheld, walk-behind, and ride-on floor grinding machines.

Handheld Floor Grinding Machines

Handheld floor grinding machines are small and lightweight, making them perfect for use in tight spaces. They are also very easy to operate, which makes them ideal for beginners. However, handheld floor grinding machines can be difficult to control, so they are not always the best choice for large projects.

Walk-Behind Concrete Grinders

Walk-behind floor grinding machines are larger and heavier than handheld models, but they are also more powerful. These machines are perfect for large projects or for concrete floors that are too difficult to reach with a handheld machine. Walk-behind floor grinding machines also offer more control and precision than their handheld counterparts.

Ride-on Floor Grinding Machines

Ride-on floor grinding machines are the largest and most powerful options on the market. They are designed for large industrial projects, and they offer the most control and precision of any type of floor grinding machine. However, ride-on floor grinding machines can be very expensive, so they are not always the best choice for smaller projects.

How Do Floor Grinders Work?

Most floor grinders use a spinning disc to remove stains, scratches, and imperfections from concrete floors. The disc is usually made of diamond or another abrasive material. Different degrees of cutting power might be accessible to the blades, which can be adjusted depending on the job at hand. The discs rotate at high speeds, and they are able to remove even the toughest stains and scratches.

To use a floor grinder, you will need to first wet the surface of the concrete. This will help to lubricate the disc and prevent it from becoming clogged with debris. You can then adjust the machine to the desired cutting power, and begin grinding! Be sure to keep a close eye on the machine while you are using it, as it can be easy to cause damage if you are not careful.

The grinding process creates a great deal of dust, so it is important to use a dust mask and goggles while operating the machine. It is also important to keep children and pets away from the area while the machine is in use. Additionally, you will need to wear proper safety gear while you are using the floor grinder aside from the dust mask and google, you also need to wear earplugs, gloves, and a respiratory mask.

After you have finished grinding the floor, you will need to vacuum up the debris and then apply a new coat of sealer. This will help to protect the floor and keep it looking its best. Floor grinders are an essential tool for any concrete worker or DIY enthusiast. With the right machine, you can create a perfect finish on your concrete floors!

Benefits of Using a Floor Grinder

There are many benefits of using a floor grinder on your concrete floors. First, floor grinders can remove stains and scratches that would otherwise be difficult to remove. Second, they can also be used to polish newly laid stone floors. Third, floor grinders offer more control and precision than handheld models. Additionally, they are perfect for large floor grinding projects or for concrete floors that are too difficult to reach with a handheld machine. over, floor grinders help to seal the concrete floor and protect it from future damage. Finally, they can be used to create a variety of finishes on concrete floors, hardwood floors, and stone floors depending on the type of machine you are using.

Here’s a rundown of the main uses of floor grinders.

  • Remove scratches, paint, or coatings from a concrete surface
  • Smooth out bumps or ridges
  • Grind down protruding nails or screws
  • Prepare a concrete surface for staining or sealing
  • Removing rust, grease, or other contaminants from a concrete surface
  • Remove old sealers or coatings
  • Level a concrete surface before installing new flooring or tile
  • Treatment polishing of concrete surfaces
  • Prepare the surface for sealing or staining
  • Extend the life of your concrete floors

How to Choose the Right Floor Grinding Machine

Now that you know what a floor grinding machine is and how it works, you need to choose the right one for your needs. Here’s a quick guide on how to choose the right floor grinding machine for your needs.

Area Size

The first thing you need to consider is the size of the job. If you only need to grind a small area, then a handheld machine will be sufficient. However, if you are working on a large project, then you will need to use a walk-behind machine.

Type of Surface

The second thing you need to consider is the type of surface that you are working on. If your concrete floor is in good condition and only needs minor repairs, then a handheld machine will be sufficient. However, if the floor is in bad condition or needs major repairs, then you will need to use a walk-behind machine.


The third thing you need to consider is your budget. If you are working on a tight budget, then a handheld machine will be your best option.

Purpose of Use

The fourth thing you need to consider is the purpose of use. If you are only going to be using your floor grinder occasionally, then a handheld machine will be sufficient.

Frequently Asked Questions About Concrete Grinding and Polishing

1) Can you regrind old and existing floors?

Yes, you can. Floor grinders can be used to remove old sealers or coatings from a concrete surface and prepare it for staining or sealing.

2) How is the polishing process done?

Concrete polishing is comparable to sanding wood. Heavy-duty polishing machines with progressively higher diamond grinding discs are used to grind down surfaces to the required degree of brightness and smoothness. After the grinding process is complete, a coat of epoxy polish is applied to protect the floor and give it a high-gloss finish.

3) What is the proper care you should apply to a floor that has been polished?

The recommended care for a polished concrete floor is to sweep or vacuum it regularly and damp mop it with a pH-neutral detergent. Do not use abrasive cleaners or scouring pads, as they can damage the finish. For deep cleaning, a weak solution of ammonia and water can be used. Be sure to rinse the floor well afterward.

4) How long do polished concrete floors last?

The life of a polished concrete floor depends on the amount of traffic it receives and the type of sealer that is used. With proper care, a polished concrete floor can last for 20 years.

5) How often should you grind and polish concrete floors?

Most concrete floors only need to be ground and polished every 2-3 years. However, if the floor is in a high-traffic area, it may need to be done more often.


Now that you know what a floor grinding machine is and how to choose the right one for your needs, you can get started on your next project. With the right machine, you can create a perfect finish on your concrete floors!

How to Choose the Right Concrete Floor Grinder for the Job

When it comes to concrete polishing and surface preparation, a good quality, reliable grinder is absolutely essential. However, with so many options available, it can be challenging to choose the right one. As a professional, it’s important to consider several factors before purchasing a concrete grinder to ensure that it meets your needs, such as power requirements, unit size, dry versus wet grinding, the availability of parts, and the support you can expect from your supplier.

In this article, we will discuss the key things to consider when selecting a concrete grinder.

Understand Your Power Needs for Concrete Grinding

The power requirements for your grinder as well as other equipment on the job site are the first and most important considerations.

Single-Phase 110V, Under 20″ (Small Grinders)

Single-phase 110V electric grinders are typically under 20 inches in width. These smaller machines are ideal for grinding in small spaces or hard-to-reach areas. For many contractors, these smaller machines produce similar results when compared to a hand grinder, only they keep the operator off their knees. While these machines do have their usefulness, it is generally recommended for professional concrete contractors to invest in a larger machine that provides better productivity.

Single-Phase 220V, 20-26″ (Medium Grinders)

Single-phase 220V electric grinders are an ideal (and Jon-Don recommended) choice for many small to mid-size jobs. Most 220V grinders are significantly heavier than a 110V unit, and jumping to a 220V circuit allows for a more powerful motor to spin the diamonds across the substrate. Single phase 220’s offer dramatically better ROI on your time and often produce a better grind overall.

These middle-of-the-road machines are great choices for residential garages, small commercial settings, and other moderately-sized spaces.

Three-Phase, 220V or 480V, 30″ (Large Grinders)

Three-phase 220V or 480V grinders typically offer a larger head size (30” or more) and are best suited for large spaces, such as warehouses or big retail centers. These larger, heavier models can offer greater productivity rates for big areas, allowing you to polish more with fewer workers.

It’s important to know if your job site offers power, and what the available connections are. You may need to invest in a generator or be prepared to work with an on-site electrician to configure the electrical hookups your equipment requires.

Propane Grinders

While propane grinders advertise higher peak horsepower and better portability, site-and region-specific regulations may apply to this power source. In some areas, propane is not allowed inside building due to the noise and exhaust that they produce. Users should also prepare for increased maintenance needs, such as oil changes, air filters, break-in periods, and valve adjustments.

OSHA outlines proper storage practices for propane, which should be followed at all times.

Wet Versus Dry Concrete Floor Grinding

For concrete polishing, there are two standard methods for concrete grinding: dry grinding and wet grinding. Both types of grinding produce the same results, so it’s often a matter of personal preference when it comes to choosing between the two. Here’s what to keep in mind:

    Wet floor grinders feature an onboard water tank or water inlet where a hose can be attached. Water helps keep the diamond tooling cooler and prevents dust and debris from kicking up in the air. Grinding concrete can expose silica dust particles to the air, so keeping your grinding surface wet prevents those particles from becoming airborne. However, wet grinding produces a lot of slurry, which can require additional cleanup procedures. If you are prepping a floor to receive a resinous coating, your job time may be extended as you wait for the concrete to dry.

Other Important Considerations When Choosing a Concrete Floor Grinder

Your concrete grinder is an important equipment investment that you’ll have for a long period of time. That means it will eventually require maintenance and support to keep it in top performing shape. With that in mind, before you make your concrete grinder investment, consider the following:

Parts Availability

When choosing a concrete grinder, it is important to evaluate the availability of replacement parts. Grinders have many moving parts that can wear out or break over time. It is essential to choose a grinder that has readily available replacement parts to ensure that downtime is minimized in case of a breakdown. Jon-Don has unmatched parts availability with more than 10,000 replacement parts in stock.

Supplier Support

The supplier you choose to buy your grinder from can make a significant difference in terms of support and service. A good supplier will provide training and support to ensure that you get the most out of your grinder. They should also have a reliable supply of parts and offer maintenance services. Choosing a supplier with a good reputation for customer service and support means you won’t be left in the lurch if something goes wrong.

Jon-Don: Concrete Floor Grinder Experts

The concrete experts at Jon-Don know their stuff and will take time to match you with the right machine for the job. We’ll walk through all the most important considerations to help you make a more informed decision on your concrete grinder purchase. With us, you can expect:

    Trusted Experts. Our team of knowledgeable experts are invested in your success and will guide you to the right products and procedures for your business

Ready to learn more? Shop our full selection of concrete grinders or call 800-556-6366 to speak with a Jon-Don concrete rep today!

Tips for Choosing a Concrete Grinder

Choosing the right concrete grinder for your business is important. When making this decision, there are a few things to consider and some tips that can help you make an informed choice.

What are you using it for? How big of a grinder do you need? How much space do you have for storage?

These are just some of the things you need to consider when choosing a concrete grinder. Whether it is for your concrete floors or surface preparation, a concrete grinder will surely do the job!

Read below as we go over everything from size requirements all the way down to price points.

What Are Concrete Grinders For?

A concrete grinder is a machine that helps to smooth and level a surface. Nowadays, most concrete floor grinders are electric-powered, and they come in a variety of sizes.

The smaller electric grinders are typically used for small projects such as home improvement or DIY projects. Meanwhile, the larger electric concrete floor grinders are more often used by professionals for grinding and leveling concrete floors. On the contrary, there are also gas-powered concrete grinders for those who need more power in their machines.

Apart from concrete floors. concrete grinders can also be used for surface preparation. This means that the machine can be used to remove paint, coatings, mastics, and adhesives from a variety of surfaces. They can also be used for removing paint, epoxy, and other coatings from your concrete floor. In addition, they can be used for concrete surface preparation like grinding down uneven surfaces and for removing grout from between tiles.

Some concrete grinders also come with built-in vacuum systems that help to keep the work area clean.

Different Types of Concrete Grinders

Concrete grinding machines come in a variety of types, and each type has its own set of benefits and drawbacks depending on the project you are working on. Below are some of the most common types of floor grinding machines on the market.

Handheld Concrete Grinders

Handheld grinders are the most common type of tool used for grinding. These small, portable tools allow you to get close enough so that your machine will be able to reach hard-to-reach areas—without being too bulky or straining its power source!

Walk-behind Concrete Grinders

Walk-behind grinders are perfect for larger areas of concrete. These units come in different models and can be powered either by LP, petrol, or diesel engines. They also come with a number of attachments, making them perfect for surface preparation. However, the drawback to using this type of grinder is that they can be difficult to maneuver, and they can also be a bit noisy.

Edge Grinder

With an edge grinder. you can get right into tight spaces and cover a lot of ground in short order. Edge grinders are ideal for use on concrete floors. They allow users to work more efficiently by providing them with leverage when trimming out their edging requirements. This helps them to reach high places or wide areas that need attention.

Diamond Grinder

You heard that right, diamond tools exist!

The diamond grinder is an expensive unit to purchase, but it can be used on more difficult surfaces than other types of grinders. The most common are the barrel head and round table models with flat tables, also available for those who have less severe needs in their homes or business settings.

Nonetheless, it’s always good practice when looking into purchasing any home improvement item like this one, to do your research on the best types and brands for your needs. By doing this, you can be sure that you’re getting the most value for your money as well as ensuring that you’re getting a machine that will do the job right and last for years to come.

How To Choose the Right Grinder For Your Needs

Now that you know what concrete grinders are for and their many applications, how do you choose the right one for your needs?

Here are some more factors to consider when choosing a concrete floor grinder:

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Will you be using it for grinding, polishing, or both? How large of an area will you be working on? When choosing floor grinding machines. always consider the purpose and where they will be used. Do you need it to polish concrete floors in commercial buildings or just to do some light grinding?

If you are mostly working on smaller projects or DIY projects, then a handheld concrete grinder would be a good option for you. These grinders are small, lightweight, and easy to use. They also come with a variety of attachments to help you get the job done.

If you are working on a larger project that requires more power, then a walk-behind grinder would be a better option for you. These grinders are usually powered by LP, petrol, or diesel engines and can cover a lot of ground quickly. However, they can be difficult to maneuver.

Assess first the job you need to do. Is it for residential home projects or a commercial space? Do you need a floor grinder that will get into tight spaces or edges?

Before you break the bank on your new toy, check first what you need it for so you will better know and understand which floor grinder you need.

Wet Grinding vs. Dry Grinding

Another thing you need to know before you go out and purchase a grinder is the difference between wet and dry concrete grinding.

Wet Grinding

Water is an essential ingredient for concrete grinding. It not only cools down the diamond tooling and provides lubrication to reduce friction, but it also prevents overheating.

Overheating could lead to the melting of epoxy resin or glazing over due to the high temperatures generated from work-related stress on materials used in the grinding process. Wet grinding is typically used in the early stages of grinding or polishing concrete floors.

Dry Grinding

Dry grinding is the process of grinding concrete without the use of water. This method is used when a high level of finish or a very smooth surface is not required. It is also used on surfaces that have been previously treated with an acrylic sealer or coating.

The latest technological advances in dry floor grinding machines or concrete floors have resolved one of the greatest setbacks to date, which is dust exposure. Newer models are now fitted with extraction systems and filters for minimizing operator or environmental health during operation as well. This method simultaneously grinds but also cleans, leaving behind a polished surface ready to be applied!

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The lack of slurry in this method means that you get to save time when cleaning up. It also gives a far better shine and finish compared with wet concrete grinding. This is also applicable when polishing concrete countertops!

However, if you are dealing with very hard concrete, then it is recommended that the wet grinding method should be used first and then switched over to dry afterward. The dust extraction system on these machines can make them more expensive than other types of equipment, but they will last much longer without getting clogged up or damaged by fine particles within your mix.

Type of Concrete

Not all grinders are designed to work with all types of concrete. You need to make sure that the floor grinder you choose is capable of grinding the type of concrete you have.

For example, diamond grinders are designed to work with harder surfaces than other types of grinders, which is why they are best used for specialty applications. Metal bonded diamonds are used on the harder surfaces that require aggressive grinding to remove concrete coatings or to prepare the surface for coating.


How easy should it be to move your grinder around? Do you need a floor grinding machine that is portable or one that stays in one place?

If you need a machine that is easy to move around, then you should consider getting a handheld concrete grinder. They are lightweight and easy to use. However, if you want to polish commercial flooring, then you will need a walk-behind grinder.

Budget and Price

So you’re looking to buy a floor grinder? It’s important that before making your purchase, the type of work it will be used for needs consideration. For personal use, some can make do without features such as heavy-duty motor ports, which might cost more than 200 but could save money in other areas down the line.

The price range on these machines typically starts at just under 200 and can go up as high as 4,000 depending on the features and the particular models that are available, like high efficient motors or water cooling systems. That being considered, ensure all the information is taken into account when looking to purchase one of these machines.

Corded or Cordless?

Corded machines have been around for a long time and work well when there’s access to electricity, like for residential homes. But if you’re working outside of continuous power, such as on location or during emergencies without any nearby sources available at all times, then consider getting one that operates via batteries instead. These types come in various capacities so they can match what your needs may be.

Noise Reduction Capability

Grinding hard surfaces is no easy task. It can be quite the challenge to get through these types of materials without making too much noise, especially when there are a lot of them. It might be important to you that the machine you’re looking to buy has the ability to reduce noise levels to avoid any type of distractions or noise complaints.

For this reason, it’s important that you look for machines with built-in sound-reducing features to help muffle any sounds coming out while working in silence mode. Noise reduction is a feature that you can see in both a handheld concrete grinder and a walk-behind floor grinder.

When looking to purchase a concrete grinder, it is important to take all of the necessary information into account. Not all grinders are created equal and some might be better for certain applications than others. By knowing what you will be using the machine for, it becomes much easier to find the best one for your needs.

Concrete Grinding and How Much Can A Grinder Remove?

Most people are searching for what concrete grinding is? Another important question for all newbies is how much will a concrete grinder remove?

Let’s go deeper into details. Concrete grinding is a mechanical treatment process of the surface using special equipment, like Husqvarna or HTC, combined with abrasive diamond tools. The metal segment attachments procure the removal of unevenness on rough concrete surfaces to reveal a smooth finish. In addition, there are grinding diamond tools to help make the process faster.

Have you ever been struggling to remove old mastic or glues, waterproofing membranes, or epoxy coatings from a concrete surface? It’s a bit of a challenge most concrete resurfacing contractors, fluid floor applicators, and even waterproofers have. The main goal is to simplify the methods of removing materials from concrete surfaces. Thus, preparation to reapply a coating, membrane, or adhesive will be enjoyable.

Why It Is The Best Method Of Concrete Floor Prep?

Firstly, concrete mechanical treatment can be accomplished either dry or wet. Prepping the floors before installing hardwood or tiles is the best way to ensure the floors’ endurance.

It is also important when the concrete will be polished or coated with epoxy, as the quality of the surface will show through.

What are the benefits of Concrete Mechanical Treatment?

  • Rebuild concrete surfaces. Removes all inconsistencies and imperfections, resulting in a usable and smooth surface.
  • Remove dirt, paint, or mastic. The best way to get rid of different remnants left on the concrete.
  • Install flooring (coatings, carpets, or tiles). A contractor can easily install any flooring on a smooth surface. Floor prep is key in the longevity of a new covering option.

How Much Will a Concrete Grinder Remove?

Let’s find out how much will a concrete grinder remove? As a matter of fact, a concrete grinder can remove as much concrete as you wish, but its limitations are:

  • the hardness of the concrete;
  • the type of diamond tooling;
  • the amount of time you spend on the floor.

A small planetary concrete grinder with basic grinding tools will remove around 1/16” of the concrete in 1-2 passes in a normal situation. You might be able to remove more – 1/8’’ if use a heavier concrete grinder and more aggressive PCD tools. In fact, an angle grinder with a cup wheel will do the best job.

It will be easier to grind in the case of soft concrete, especially if you use highly aggressive PCD tools for concrete layer removals like glue, black mastic, or other imperfections.

Lastly, the more pressure you put on the grinder, the more wear you put on the diamond tools. If you need to remove a thicker layer of concrete faster, you may need an extremely soft bond grinding pad.

Finally, concrete grinding is often seen as a finishing or refinishing procedure. But if you have a thick layer to remove, contractors suggest a complete demo and re-pour the slab.

How Long Does Grinding Take?

Do people also ask about how long does grinding takes? As a matter of fact, the time of concrete grinding depends on a few factors:

  • How big is the project?
  • Whether the area is quite open, or it consists of a lot of small spots?
  • What kind of finish do you expect – polishing or sealing?
  • How much exposure of aggregate do you want to see?
  • What kind of shine do you desire?

How much does it cost to grind concrete?

In fact, concrete grinding contractors normally charge around 0.75-2 per square foot for light concrete sanding. This makes the floor ready to install a new floor covering. over, check out the ranges for different types of glues or mastic removal:

  • A thin layer of epoxy paint, VCT glue, or mastic: 1 to 1.2 per square foot.
  • Thick coatings 1/8-1/4”: 1.3 to 1.5 per square foot.
  • Black heavy mastic (multi-layer): 1.5 to 2 per square foot.
  • Check our Concrete Calculator. You can find out How much concrete do you need?

Do you want to know how much will a concrete grinder remove? Here are the answers, along with other commonly asked questions.

The beauty of choosing a full exposure aggregate of polished concrete for your space – whether residential or commercial. Is that you got a truly unique floor. No two concrete floors are the same, as it all comes down to concrete quality, technique, and aggregate amount.

However, most people don’t know how to achieve that shiny and refine style. Also, aggregate exposure ranges from minimal to open-stone exposure depending on the depth of the rocks inside the concrete and grinding.

Concrete Grinding Contractors Near Me

Firstly, your best option to find out the floor prep cost in your area is to contact a contractor. Secondly, request a Free Estimate to find out the best competitive price from your Concrete Contractors Near Me. Lastly, if you’re getting into the game of floor renovation, hiring a Pro will most likely help to avoid wasting time and money on your first few jobs.

Consequently, in this article, we learned what ground concrete is? Also, what is the best prep method? And how much will a concrete grinder remove? Feel free to ask our specialist a question.

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