Concrete Grinding Archives - Colorado Concrete Repair
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Surface Preparation for Concrete Coating Applications


Surface Preparation is Key to a Successful Coating Application

Surface preparation is arguably one of the most important tasks of the concrete coatings process. For this reason, we want to take a moment to walk you through why it is so important to prepare a surface for resinous coating adhesion and how we make sure it is done properly.


Why is Surface Preparation So Important?

Surface preparation is important because if it is not done right, the coating system could fail. For instance, if the moisture was not tested and there is too much moisture in the concrete prior to coating installation, or the concrete slab was not repaired or leveled, the coating may delaminate quickly. The reason our coatings last longer than other competitor’s is because of the pride and time we take in preparing the concrete surface for adhesion. In addition to this, we also use high-performance materials that may cost more upfront, but will be a longtime investment.

surface preparation

Patching and crack repairs.

How Do We Prepare the Surface for Proper Adhesion?

Our team will ensure that your concrete is prepared and repaired, so that your concrete coating will adhere. Look at the following ways we prepare the concrete prior to resinous flooring application.

  1. Repair the concrete.
    • Fill cracks with flexible joint filler.
      • Cracks generally must be bigger than a credit card width to warrant chasing them and filling them for the integrity of the concrete slab.
    • Level the concrete where needed.
      • Concrete must be as flush as possible for coatings to adhere properly.
    • Apply a cementitious layer and patch spalling concrete areas where needed.
  2. Grind, shot blast, or sandblast the concrete surface.
  3. Acid etch or mechanically prep the concrete.
    • Concrete needs to be a rough, sandpaper finish for the coating to adhere. This can be done either with acid etching or mechanical preparation.
  4. Dry mop the concrete or clean the area surface from dirt and debris.


surface preparation

Grinding the concrete with dust control


And to Sum It Up…

Once the concrete is prepared thoroughly and to industry standards, it is time to apply the resinous coating system! This is the exciting part because this is the part you get to see the result! One thing to consider before moving on, however, is in this process it is important to do proper moisture vapor testing to make sure the concrete’s moisture level is within industry standards to apply a coating. Otherwise, moisture will affect the coating’s adhesion. Also, we’ll give you our honest opinion if you would be better off replacing your concrete if we do not think we can repair it well enough for a coating to adhere properly.

Thank you for your interest in finding out how surface preparation is an important step to the concrete coating process! When you work with us, you can trust that you are in the right hands. We appreciate our clients and want to give them the best concrete flooring investment! Call us today to learn more at 720-258-6571!



Epoxy Coating for a Fort Collins City Building

Epoxy Coating Project Complete

We completed an epoxy coating project in the Fort Collins Power and Light office building this past month. The client chose to install the quarter inch Copper Mountain flake epoxy system, so that it would be easy to clean, durable to high traffic, and look good. The job was a big success! We transformed 15,000 square feet of rough and unlevel concrete that was previously carpeted into a beautiful, seamless, easy-to-clean floor. The client had decided on this application after having a previous section done and having seen how well it performed with workers walking through the area with muddy boots.


The Process:

Prepwork is arguably the most important part of our trade, and with this floor, we needed to focus on repairing the surface so that it would be nice and flat for the coating to adhere. We moved old pieces of concrete that had broken due to the concrete settling and cracking over time, as well as we filled a lot of cracks and grinded the surface smooth. The floor also required moisture remediation after testing. The moisture remediation consisted of a special primer needing to be installed on the floor and extensive patching to ensure adhesion of the epoxy chip coating. The prepwork laid the foundation for a nice industrial floor coating.


Why Epoxy?

The client chose this system to be installed in the high traffic areas, like hallways and large rooms, where people would gather and walk through often. They decided to carpet the offices, which can often be a good decision for a cozier feel for people’s workspaces. Concrete floors can be a nice addition to a mixture of flooring types, depending on what they will be used for. In this case, the city will be happy with the mixture of epoxy coating and carpet for their usage because the epoxy is industrial-strength and looks good, whereas the carpet does not get as much traffic and provides a nice environment in the office setting.


Some things to consider when choosing an epoxy floor application…

Whenever our clients choose an epoxy for paint, we want to be clear that there could be odors associated with the resins we use, and really, you’re going to get this with any contractor. However, there are ways to reduce the odor, which is what we did in this case. Products were selected to reduce odors because part of the building was occupied. Another thing we want our clients to be aware of is the drying times, which can be longer or shorter depending on the temperature of the concrete and surrounding environment. Depending on the material used, our clients may be able to walk on it the next day, or it could take an additional day if it did not dry quick enough. Also, be careful and consult with us before you drive any machinery on the surface when we’re finished.


We’d love to work with you on your next concrete coating project!

Overall, we are pleased with the outcome and look forward to help warehouses, city buildings, gymnasiums, schools, airplane hangars, large garages, pole barns, get setup with an epoxy coating like this one, or other types of concrete coatings and polished concrete. We provide free estimates after you your project has been qualified over the phone. Call us today for your free estimate at 720-258-6571. We look forward to working with you.


City Building Epoxy Coating  Gallery:

Check out these before and after pictures of this concrete coating project below. You’ll see some of the concrete repair, our machines that grind the concrete and collect the majority of the dust, and then the floor when it is complete! Wow! What a difference!

Industrial Flooring Options

What are your options when choosing an industrial flooring finish?

Industrial Flooring Options

Whether you own or manage a manufacturing warehouse, brewery, food facility, fire station, furniture store, retail store, veterinary facility, or even a pole barn, you want tough floors that will outlast the wear and tear of the daily grind. We’ll explore the various industrial flooring options with you in this article, and hopefully we’ll leave you with more knowledge to decide which flooring application is best for your situation.


There are many flooring options to consider, but which one is the best for your business or project needs? Let’s take a look!

Epoxy Floors

Epoxy floors, also known as epoxy coatings, are typically more expensive than overlays, however they are seamless and extremely abrasion resistant. Epoxy coatings are ideal for projects requiring durability, longevity, and chemical resistance. They require minimal maintenance, which makes them popular flooring applications for show rooms, retail facilities, schools and food preparation areas.


Our team at Colorado Concrete Repair specialize in epoxy floors, like epoxy chip floors, metallic epoxy floorsflat epoxies, and sand broadcasts. Our epoxy coatings are generally “microtoppings” or skim coats that are flexible and super thin, usually around featheredge to 1/8 inch. We’ve completed projects that range in size from 800 square feet to 10,000 square feet, such as a large tool manufacturing facility that chose a flat gray epoxy flooring to a fire station that requested an epoxy chip system.

We generally recommend epoxy floors if you want to cover up or hide concrete’s imperfections, like cracks and mild spalling. We choose thinner epoxy systems, so that the coating can flex with the concrete as it moves. Take a look here to view an example of a Tuscan Slate overlay system that our peers in Columbus, Ohio, applied for more information on thicker overlays, which are applied thick enough to accept texture and cover minor imperfections in the concrete substrate.

Concrete Grind and Seal

Concrete grinding is a more affordable option than ripping out and replacing concrete, and in addition it gives you a smooth finish, removes trip hazards, removes coatings from concrete, and prepares the surface for other flooring systems.

We have state-of-the-art concrete grinding and polishing machines and have used them to grind thousands of square feet for clients, who simply wanted a smooth and sealed surface to store and move boxes all the way to clients who wanted to remove trip hazards for foot traffic safety. It is best to choose a concrete grind and seal if you are satisfied with the look of your existing concrete. We will guide you through and help you decide when we do the initial walk-through, but generally you must be okay with seeing cracks, the existing color of the concrete, and areas where it is spalling.


Grind the concrete, then Seal it!

Furthermore, once you choose the concrete grind and seal option, you will then choose a sealant. We recommend acrylic sealers for most projects, but you can also choose a penetrating sealer, which chemically reacts with the concrete, or an epoxy-type thicker coating. Acrylic sealants are applied both on interior and exterior surfaces to form a thin, protective film that protects against water and chloride intrusion, as well as allows the moisture in the slab to escape. They are UV-resistant and non-yellowing. They also come in a variety of sheens and can enhance the natural floor.


Finally, keep in mind that acrylic sealer is a fast-track option, meaning it dries to the touch within an hour usually. You also will have to reapply more often since it is much thinner than epoxy and urethane finishes. You will also want to maintain the floor with several coats of floor finish or wax to prevent wear.


Polished Concrete Floors

Polished concrete is ideal if you want a no-wax, no-coating flooring option with a satin or high-gloss finish. This flooring option has superior durability and high performance. Almost all structurally sound concrete floors, whether new or old, can be polished, with some exceptions. As long as the concrete has been in place 28 days or more, and is not wavy, extensively porous, or needs patching, then polished concrete could be a good option for your industrial flooring needs. If you are having new concrete poured, it is best to specify as smooth of floor as possible to minimize the polishing steps required.

In conclusion, existing floors usually require cleaning to remove the dirt, dust, coatings and grime prior to polishing. Then when we polish the floor, we use the traditional floor polishing system, using different grit diamond heads with our high-performance grinding machines to smooth surface to the sheen you desire, with 800 grit being the most traditional level. During this process, we apply a penetrating hardener to the concrete, which solidifies and densifies the polished concrete.


The benefits of a polished concrete floor over a coating make polished concrete the more superior choice in most cases:

  • Lower costs to maintain: Using the pre-existing slab on grade is more cost effective and you will have lower maintenance cost savings
  • Less maintenance and service life: Polished concrete floors are easy to maintain and do not require the laborious hours and time it takes to reapply wax or coatings. They glossy surface resists heavy forklift traffic and chemical and oil stains.
  • More resistance to high foot traffic
  • Resistance to moisture transmission issues: Polished concrete allows the floor to breathe, eliminating issues that come along with other flooring types, like tile.
  • High light reflectivity: Polished concrete creates a brighter space, saving costs on lighting; it also gives a bright, clean, professional image, which is why grocery stores, retail centers, public facilities and office buildings are opting to install polished concrete.
  • Sustainable flooring alternative: Polished concrete does not require hazardous cleaners, coatings or adhesives.

Other Industrial Flooring Options

When you are in the market to repair your concrete floors, you also have options to cover up the floor. In some cases, this is ideal and understandably so, such as if the concrete is not in good enough condition to coat or polish, or if you simply want a different look that coatings and polishings cannot give you. Some of these flooring types are as follows:

  • Laminate
  • VCT
  • Tile
  • Marble
  • Granite
  • Linoleum


Hence, when looking at your different options, consider how easy they will be to clean, how long they will last, are they sustainable and how much traffic can they handle? If any of these answers make you wonder if you should find an alternative route, it might be ideal to talk with a flooring contractor who is the expert in concrete flooring solutions.


Contact us today for your FREE ESTIMATE at 720-258-6571.

Commercial Polished Concrete with Black Dye

Mizu, Denver Highlands Contemporary Japanese Restaurant, Polished Concrete Floor Looks Stylish and is Easy to Maintain

Commercial Polished Concrete Floors are Taking Over…Our Story Recently…

August 2016 we polished a restaurant floor for a new sushi restaurant opening in the Highlands, Denver, CO. The client chose a polished concrete with black dye to show off the beautiful and upscale style of the restaurant. The floor had mastic, or glue, on the surface that we had to remove before we started polishing. Then, we polished the restaurant floor with a traditional 800 grit polishing system and cast black dye into the concrete. We are proud to say that our client is happy with our work and even wanted us to fix up a concrete wall that he had behind the bar area. We love giving our clients the look they desire. Commercial polished concrete floors are durable, easy to clean, beautiful, and long-lasting.

commercial polished concrete

Polished concrete is a great flooring option for several different purposes: schools, auto shops, warehouses, car show rooms, retail shops, museums, and just about anywhere you can think of with a nice slab on of concrete. We have the machine and man power to beautify your concrete floor in a matter of days to weeks, depending on the size of the job. Polished concrete is green, meaning you do not need to put any other material over it. It is also a good option if you want flooring that is sturdy and lower maintenance than most. Polished concrete will stand the test of time as long as you maintain it properly. We can get you in touch with a company that provides polished concrete maintenance, so that you are worry free when you have your new floor.


Call us today for your FREE estimate!

Concrete Repair in Denver

Concrete Maintenance…Is It on Your Mind?

Colorado Concrete Repair specializes in repairing concrete in the Denver metro area. We have years of experience repairing cracking and spalling concrete, as well as repairing concrete joints and deteriorating concrete. Many of our clients’ facilities run forklifts and need more than just repairs; they require ultra smooth concrete floors that will allow them to run their forklifts without damaging the electronics or jostle sensitive loads.


Your concrete can deteriorate over time and it is important to maintain it, but sometimes you need to replace the concrete instead of repair it. Call us today to talk with about your concrete repair needs at 720-258-6571.


Colorado Concrete Repair helps fix ugly concrete:

  • Crack repairs
  • Joint repairs
  • Concrete patching
  • Concrete grinding
  • Concrete coatings

Crack Repairs

It is important to properly repair concrete cracks, as they have a tendency to spread if not taken care of. This is similar to how a crack in windshield can turn into a bigger problem if left untreated on your car. Concrete cracking is common because of the shifting of the earth. Concrete is poured in such away to allow it to move with the earth, but the result of this movement can be cracks on the surface.


In order to see if we should fill the crack or not, we take a look at the width of the crack. If it is a “hairline” crack, or you cannot fit your credit card in the crack, we advise to leave it alone. If it is wider than the credit card, then we advice fixing it.


To repair the crack, we clean it out and at times we’ll need to actually make it bigger to properly fill it in with our material. Our material allows it to move with the earth but stay put, as to not allow the crack to grow bigger and bigger. We fill the crack and then make sure that it is as flush as it can be to the ground.

crack repair

Municipal crack repair

Joint Repairs

Colorado Concrete Repair repairs concrete joints, so that you can ensure water is not creeping into the joints and therefore seeping into your concrete pads, causing them to sink. We will remove old joint sealant (if needed) and cut out the space to then fill it again with joint fill. This will help you maintain your concrete and expand it’s life before in needs replaced.


Joints are an important part of the concrete’s makeup. They allow the concrete to expand and contract (get bigger and smaller) with temperature and humidity changes. Since they are important it is a good idea to maintain them and we are here to help!

Concrete Patching

Patching concrete can be just as integral as crack repairs and joint repairs. The rule of thumb here when deciding if a piece of concrete needs patched or replaced is to see if the concrete is so deteriorated that you can see rebar. If you can see rebar, it’s probably time to replace that concrete because it’s only a matter of time until the patching material will come off (deteriorate), too. We can’t make promises when we patch concrete in that bad of condition. However, if the concrete is spalling a little bit, we can address the issue and will address the issue before we grind the concrete or coat it. We’ll even patch concrete if you aren’t going to do anything else with it if you need help with safety hazards. Contact us to tell us what issues you are having with your concrete and we’ll let you know the best route!

Concrete Grinding

Concrete grinding is a great solution for trip hazards, where concrete has risen so much that a door will not open or so much to where someone can easily trip over it, or a machine cannot drive over it without exhaustive effort. Colorado Concrete Repair grinds concrete for several reasons:

  • Grind and seal concrete driveways
  • Grind less than 1″ risen concrete to smooth surface
  • Grind and seal concrete floors in basements or if you have concrete floors on the main level
  • Grind and seal brewery concrete floors, restaurant concrete floors, and commercial or industrial flooring

You can get a unique industrial look to your concrete floor if we grind it and then seal it. Grinding concrete is similar to polishing, except we will not grind as many levels of concrete as we would if we wanted to get the polished concrete look. It is a good option if you are looking to smooth out your concrete surface but at the same time it will protect the surface and make it a good surface for all your business or residential needs.

Concrete Coatings

Colorado Concrete Repair will work with you to coat your existing concrete after we’ve made any repairs that are necessary to keep the integrity of the concrete. Coatings are a good option when you need to cover up existing concrete due to it not looking the way you want it to look. It is also a good option to coat concrete when you want a specific look the concrete does not already have, like a pool deck or garage floor system, or to give you a certain surface that is durable, has traction, and will resist harsh chemicals or oils, and be easier to maintain than just a concrete surface alone would be. Contact us to talk about the many options available to you with ever-advancing technology in concrete coating systems.

We can work with you to minimize downtime and keep your facility operating efficiently. Contact us to find out more.

Maintaining your concrete after repairs is just as important to repairing it.

Once we’ve repaired the concrete, it’s important to maintain it. One of the best ways to maintain your repaired concrete floor is to seal it. Colorado Concrete Repair seals concrete so that it outlasts the damaging effects of the environment, whether that be weather elements, vehicular and foot traffic, or chemical damage. As is with any floor surface, it is still best to maintain your concrete even if it is sealed. Wipe up messes when they happen and follow cleaning procedures based on the concrete finish you choose. It is also best to avoid putting magnesium chloride directly on the concrete, as it can still deteriorate the concrete because it is a harsh chemical.