Do you need to grind new concrete before epoxy?

Concrete is a very versatile material, and it can be used in a variety of ways. When you want to do some concrete work, whether it’s filling a hole or making something new, you need to know how well your concrete will stick together before using it.

The right answer is: You should grind new concrete before epoxy. The wrong answer would be not grinding the new concrete before epoxy because then it won’t last as long and may cause damage later on down the road.

To test for this answer, you can ask someone who knows about these things or even look up some videos on YouTube that explain how everything works!

How do you prepare new concrete for epoxy?

When you’re ready to apply epoxy, you’ll want to make sure that your new concrete is clean and free of dirt and debris.

To do this, use a stiff-bristled broom or another cleaning tool to scrub the surface. If there are cracks in your concrete or any parts of it that contain holes or pits, fill these with a concrete repair compound before applying epoxy over them.

This is just one way to prepare new concrete for epoxy application! Use these tips as a starting point when working with this material; there are many others out there if you’re looking for more information on how best to go about preparing fresh surfaces like yours!

Can you put epoxy on new concrete?

Yes, but there are a few things to consider. Before putting down the epoxy, your concrete must meet certain requirements for moisture and pH levels.

The moisture level should be no more than 4 lbs per square foot (PSF). The pH should be between 7 and 10 with a preference for the lower end of that scale.

In addition to these requirements, make sure that your concrete is clean and free of dust, dirt, or grease as this will prevent proper adhesion of the coating to your flooring surface.

Does concrete have to be smooth for epoxy?

Yes! You need to grind new concrete before epoxy coating. The smoother the surface, the better your epoxy will adhere.

Epoxy is great for filling in cracks and holes because it dries clear and smooth over time. The rougher your concrete is before applying epoxy, the rougher-looking finish you’ll have once it’s done curing.

How do you prepare a concrete floor for epoxy coating?

The most important step in preparing your concrete floor for epoxy coating is cleaning it thoroughly. You’ll want to use a good degreaser and then rinse the floor with clean water.

You also need to inspect the concrete for any cracks or holes that may need patching up before you apply epoxy. If there are any cracks, fill them with an appropriate repair material (like Wonder Patch). Holes will require more work because you’ll need to fill them first before patching over them with epoxy or repairing mortar if they’re too big for Wonder Patch alone.

Make sure that you’ve removed all dust from your concrete surface by sweeping off any loose particles before beginning this next step: diamond grinding!

This process exposes the aggregate in your concrete making it easier for adhesives like epoxies and paints/coatings to stick onto surfaces properly without becoming dislodged over time due to too much moisture underneath their bond strength limits – which would cause peeling/flaking/cracking issues down the road when exposed again under direct sunlight conditions due not being able to keep up with its own heating up activities (also known as thermal expansion).

How long should concrete cure before epoxy coating?

The concrete should cure for at least 7 days before coating, but ideally 28 days. In some cases, it may be necessary to wait longer than 28 days if your concrete was poured in the winter and you live where winters are cold and wet. The curing process will continue after the 28-day period has passed, but it will happen at a reduced rate.

Another factor is that your concrete must be dry enough before you apply an epoxy coating. You can test moisture levels with a moisture meter or by drilling small holes into the surface of your slab and inserting wooden dowels into them.

If water appears on those dowels when they come out of the holes, then an additional week or two of drying time will help ensure that all excess moisture has been removed from underneath layers of paint or sealer applied earlier in the construction process.

How clean should concrete be before epoxy?

You’ll need to remove all dirt, grease, and oil from the concrete before applying epoxy. To do this, you can use a concrete cleaner like “Clean & Seal.”

You should also make sure that your floor is dry before you begin. If it’s not dry, the epoxy won’t stick as well and might peel off later on.

You shouldn’t use a degreaser or muriatic acid; they may damage the surface of your new concrete. You shouldn’t wash with a pressure washer either; these can cause small holes in your floor that will allow moisture in which could ruin your project later on.

Finally, avoid wire brushes or anything abrasive as they can scratch up the surface of your flooring making it harder for epoxy to stick properly.

Can you epoxy uneven concrete?

Can you pour self leveling concrete over epoxy?

The answer is a resounding yes. As long as you have the proper tools and materials, it’s possible to mix self-leveling concrete in a bucket or pour it directly from the bag. This means that you can pour your own self-leveling concrete and create a floor or countertop instead of paying someone else to do it for you.

Additionally, there are many benefits associated with using self-leveling concrete:

  • You will save money on labor costs because it takes less time than pouring traditional concrete floors or countertops
  • It requires fewer steps during installation (e.g., no need for grouting)


So, to answer the question of whether or not you need to grind concrete before applying epoxy: it depends.

If you’re just doing a floor, then no, there’s nothing wrong with skipping this step. If you’re doing a wall or other large surface that will require heavy equipment, then yes—you’ll need to grind down any existing surface before starting your project.

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Martin Flood

Martin Flood has been working in the construction industry for over 20 years as a general contractor with expertise in remodeling projects that are large or small. He has furthered his career by specializing in epoxy resin flooring, providing excellent service to both commercial and residential clients. Martin’s experience enables him to offer professional advice on how to choose the right type of project based on your needs and budget.

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