Are there any special products needed to apply a single-coat system for an existing epoxy garage floor coating?

As long as the existing garage floor covering is a 2-part resinous product, such as epoxy, polyurea, polyaspartic, or polyurethane, then you should be able to do so. The best coating you can apply to your garage floor will be a premium multi-layer epoxy system. It will consist of a coat of primer, a 100% solid base coat, pieces of acrylic-colored paint if desired, and one or two upper coats of transparent epoxy or polyurethane. It's not uncommon for a floor like this to be 30 to 40 thousandths of an inch thick.

These types of floor systems can last 15 to 20 years or more. Epoxy coatings usually come in kits with everything you need. Once you choose one, determine if you'll need to order additional supplies. Manufacturers may suggest two coats of epoxy paint and a top coat, but most standard kits only supply enough for one coat.

If you choose to add colored flakes, which will help hide the imperfections inherent in concrete, determine how intensively you will spread them on the floor so as not to fall short. In addition, if the foundations of your garage are raised above ground level at the bottom of the walls, you may want to consider coating the vertical surfaces a few more inches to make it easier to clean the garage. Then decide if you want to include an anti-slip additive, granules that give the finished floor a surface similar to that of sandpaper. This can be a good option in rainy or ice-prone regions.

If the coating is quite worn out and looks more concrete than epoxy, then you'll want to start from scratch by shredding the floor. If you like the simpler application requirements of water-based epoxy, you can increase durability and protection with a more professional multi-layer kit that offers a second coat of transparent epoxy as a top coat. Most professional floor covering contractors and garage floor coating companies use their own commercial-grade product and will not apply anything that is provided to them. And finally, if you apply the floor covering yourself, choose an epoxy manufacturer with good customer service to ensure a good experience and a quality floor.

As long as the previous layer has adhered very well, the preparation will be good and a new layer can be applied over it. If you want to apply epoxy to your garage floor yourself, plan to dedicate a weekend to the project. If you're thinking of hiring a contractor to install an epoxy coating on your garage floor, be sure to ask how many layers they use and what each layer does. Applying an epoxy coat to a concrete floor is as easy as painting walls, but as with paint, success lies in the preparatory work.

After the day I noticed that the transparent layer had some open circles and when I put the fridge back in the garage, it basically cut the epoxy with some stains. Sometimes it's as simple as when someone planned a multi-layer flooring system and waited too long between coats, leaving the epoxy to harden, before applying the next coat to obtain a chemical bond.

Frederick Lilla
Frederick Lilla

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