Concrete Grinding Stops Garage Floors From Peeling

Just like painting a wall, if you sand a wall before painting, the paint will stick. If you grind the concrete the epoxy will stick.

How Not To Paint A Garage Floor

It is interesting to note that the majority of complaints about epoxy garage floors are from DIY applications.

The reason being, When we google “how to paint a garage floor” The first video google show is teaching the wrong floor preparation technique.

Stop garage floor paint peeling?

When you add this to the fact that most of the inexpensive epoxy floor kits make application sound as natural as rolling paint on the floor, you have a recipe for failure.

Diamond grinding a garage floor you and I can both see the surface is clean. This opens up the concrete floor to allow a garage floor paint to soak in and bond.

Before diamond grinding the concrete has been finished off with a trowel, this hardens, flattens and closes up the surface.
Acid etching goal is to do what the grinding does but no way to tell if you have achieved it good enough. This also goes for Professionals.

Now, after seven days of curing, you drive in your garage on your new floor and stop in your car spot. Then we all tweak the wheel, making sure it’s all inline.

– Now, how heavy is your car?
– How hot and sticky are those tyres?
Lets says the average weight of a car in kg is 1,302 kg.

Now no matter what that is heavy and whatever coating is under the stick tyres with this added weight would need to be well and truly bonded to the concrete to prevent the tyres from cooling down and sticking to the surface for some time with 1302kg hold it down.

Ok now drive off, with the acid etching method, like the Bunnings video then how do you not expect this to peel off?

With Diamond grinding at least you know and can visually see the first coat soaking in and holding on tight.

Best Garage Floor Epoxy

100% solids epoxy floor coating guaranteed never to peel off your garage floor. Why? When prepared with a diamond grinder and achieving an 80 grit sandpaper finish eliminates the risk of peeling.

Quality Of Concrete Floor Preparation

Another step of the concrete preparation, which many DIY installers skip, is the proper cleaning of the concrete floor before applying the epoxy.
The floor must be clean and free of oil, grease, loose dust and debris.

When grinding the concrete, dust and loose debris cover the floor. If there are any oil, silicone and tire polymer residue, you need to grind your floor rather than use acid etching.

The acid will not remove any oil stains or clean heavy grime off of concrete. Acid needs to react with the free lime in the concrete to work. If there is a thin film of oil or dirt on the surface, the acid will not work.

Moisture In Garage Floor

When laying your brand new epoxy floor, you need to make sure your concrete is arid.

Moisture under the concrete slab can cause pressure that forces the Epoxy to separate from the concrete’s surface.

If your concrete slab is brand new, you need to wait at least 28 days to before you apply Epoxy thoroughly dry.

If you’ve chosen acid etching as a floor preparation, you need to wait at least 24 hours before proceeding with the Epoxy.

Otherwise, the moisture trapped in the concrete’s pores will rise and cause bubbles in the floor finish.

Do Not Acid Wash Garage Floor

Many DIY kits on the market, recommend acid etching for floor preparation.

What Does Acid Etching Do To Concrete?

For a start, acid etching products use citric acid, due to being environmentally and user-friendly.

The way the acid works is by reacting with the free lime in the concrete.

And these reactions result in a breakdown of calcium on the surface and exposing the concrete pores.
Calcium is then deposited onto the surface, forming a thin layer of dust.

Sealed Concrete Floor

As mentioned before, Epoxy needs a clean and porous concrete to create a mechanical bond.

If your concrete has been previously sealed, it needs to be firstly ground before applying Epoxy.

This removes the sealer and gives you the correct surface profile.

If you are not sure if your concrete has been previously sealed, you can test it with water, spread around different areas of the concrete.
If the water turns dark and is absorbed into the concrete, it means your concrete is free of a sealer.

Didn’t Use Enough Epoxy Resin

DIY epoxy floor kits generally won’t cover many garages. Moreover, a prepared concrete floor will absorb some of the epoxies.

If you have a 40 square meter garage and you buy a kit that says it covers 30-50 square meters, you will run out.

If you try to stretch the product to cover your floor completely, the result can be an epoxy coating that is too thin or not hard enough.

This will decrease its durability and longevity. In the long run, you will end up re-applying the Epoxy a year later.

How To Prevent An Epoxy Floor From Peeling?

Applying Epoxy can be tricky.

To ensure durability, longevity and a beautiful finish of your epoxy floor, you need to ensure that the concrete floor is prepared correctly and that the environmental conditions are between 10 – 35 degrees.

If it might seem like you are saving a lot of money, by doing it by yourself, but in the long run, it will prove more expensive.

Even that DIY epoxy kits make an Epoxy sound like a walk in the park; if not done correctly, your Epoxy will be peeling and cracking within a year.

If saving money is what you are looking for, Vision Seal’s advice is to hire a professional to do the job for you. This way you’ll have a beautiful epoxy garage floor, that will last you for decades, without having to worry about it.

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