Do you have to grind concrete before epoxy?

Acid etching a garage floor is a great solution for those who are installing the floor themselves and do not have access to industrial grinders. However, for larger commercial jobs, older concrete, or worn floors we always recommend grinding before epoxy installation.
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Do you need to sand concrete before epoxy?

To finish preparing an uncoated concrete floor, you need to etch, acid wash or grind the floor, as a smooth floor will not allow the epoxy to adhere well. You can rent a sand blaster or diamond grinder and rough up the surface.
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What happens if you don't etch concrete before epoxy?

New concrete must be etched before applying the epoxy. The smooth surface of unaltered concrete won't bind with other materials, such as epoxy or paint. As a result, epoxy will peel and lift away, failing to adhere to the surface.
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Will epoxy fill imperfections in concrete?

Legacy Industrial's 5-Ton Epoxy Patch Kit is a good example of this. This type of repair works extremely well and is a popular method among floor coating contractors. Besides repairing pitting and palling, it does a good job of filling larger holes and cracks as well.
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Can you epoxy over rough concrete?

Epoxy is not suitable for leveling rough concrete slabs. 2. A common misconception is that by applying a high build epoxy coating (like a self leveling) on uneven concrete the floor will magically become smooth and level. THIS WILL NOT HAPPEN!
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How to grid concrete floors for epoxy

Can I epoxy over cracked concrete?

Epoxy coatings cannot withstand the stresses associated with concrete cracks due to settling, dry shrinkage or other factors. Don't let the fear of cracks keep you from enjoying the benefits of epoxy; with a little prep and repair work, you can move forward with your epoxy project.
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How do you know if concrete is ready for epoxy?

The concrete will immediately, or at least within a minute, darken as the water absorbs in areas with no contaminants. You would immediately notice whitening or a frosty hue in areas that have silicone-type contaminates. Further, check to see if the water beads up and then takes more than a couple of minutes to absorb.
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How do you prep a garage floor before epoxy?

  1. Clean and Degrease the Floor. Use a broom and wet-dry vacuum to clean debris from the floor. ...
  2. Etch the Concrete. Etch the concrete floor using the etching solution provided in the epoxy coating kit, following the manufacturer's directions. ...
  3. Prepare the Room. ...
  4. Mix the Epoxy. ...
  5. Apply the Epoxy. ...
  6. Let the Garage Floor Dry.
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Can I sand concrete instead of etching?

In our experience, the simple answer is no. While acid etching is better than doing nothing to profile the concrete, it simple does not work as well as a floor grind. There are a wide range of concrete types, varying in composition, hardness levels, and texture–meaning there isn't a one size fits all solution.
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Is concrete etching necessary?

Etching is a crucial step in preparing concrete for painting. It gives the surface tooth to adhere to, so your paint is more likely to stick for a long time. Most concrete paints require etching and if they don't, do it anyway. Don't skip this step if you want a long-lasting painted concrete floor.
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How long does concrete need to cure before applying epoxy?

Standard specifications recommend a minimum 28 day cure period for “green concrete”, before an epoxy floor coating or other resinous system can be applied.
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How do I prepare my garage for epoxy?

How to Epoxy Garage Floor in 8 Steps
  1. Step 1: Prep and Wash the Garage Floor Area. Photo by Kolin Smith. ...
  2. Step 2: Etch the Garage Floor. ...
  3. Step 3: Mix Up the Epoxy Paint. ...
  4. Step 4: Paint on the Epoxy. ...
  5. Step 5: Roll the Epoxy Paint. ...
  6. Step 6: Apply the Color Flakes. ...
  7. Step 7: Prepare the Top Coat. ...
  8. Step 8: Apply the Top Coat.
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What are the disadvantages of epoxy flooring?

Cons of Epoxy Flooring
  • Strong Application Fumes. During the epoxy application process, wet epoxy gives off an unpleasant smell. ...
  • Long Curing Time. ...
  • Slippery When Wet. ...
  • Economical Flooring Choice. ...
  • Resistant to Damage. ...
  • Weather-withstanding. ...
  • Aesthetically Pleasing. ...
  • Protects and Decreases Wear & Tear.
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How many coats of epoxy should you put on a garage floor?

With a garage epoxy floor, you will want to add at least two coats. Allow at least 12 hours to dry between coats and no more than 48 hours. Although the floor will be touch dry after a few hours, it takes a few days to cure properly.
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Is it worth putting epoxy on garage floor?

Epoxy flooring protects the underlying concrete from moisture, stains, grease and cracks. In the long run, this can save you a great deal on cleaning and maintenance costs by eliminating the need to clean carpet or grout. It's also very reasonably priced for the duration and level of protection that it offers.
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How long does epoxy floor last?

For residential spaces that use epoxy flooring—like patios or garages—homeowners can expect to keep their epoxy flooring looking great for even longer. Typically, residential epoxy flooring can last up to 10 years with proper care!
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Does epoxy prevent cracks?

Dormant cracks are stable, which means there is a very small chance that they'll develop into bigger cracks. Since these cracks are just cosmetic, applying an epoxy floor coating corrects the problem permanently.
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Why is my epoxy floor cracking?

Do Epoxy Floors Crack? Epoxy floors are very rigid. As a material, epoxy has very little flexibility, so slight shifts in the foundation can lead to cracks forming in an epoxy coating, leaving you with cracked floors that are difficult to repair without recoating with a new layer of epoxy–an expensive proposition.
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Can you epoxy an uneven surface?

If you have an uneven surface to begin with, epoxy resin can be used to make it more level to great effect. Inherently, all of our resins have self-leveling properties that help them flow to coat a surface evenly. You can also use them to seal surfaces that are porous or have little holes, such as wood or stone.
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How do you smooth out a rough concrete floor?

To smooth a rough concrete slab, you will need to brush off all debris with a broom, then wash away the grime with a mop using neutral cleaner and warm water. Next, you will want to identify the areas with cracks or misshapen areas.
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