Garage, concrete, floor painting, ceramic, tiles, concrete, stain, epoxy

garage, concrete, floor painting, ceramic, tiles, concrete, stain, epoxy

Garage Floor Painting

How to Paint an Epoxy Floor


Begin by sweeping and/or blowing away any heavy accumulations of dirt or loose debris. Be sure to blow or sweep away any leaves, dirt, debris from surounding area — anything that could blow in through garage door, (pressure washer can be used for this if you don’t have a blower).

Next using a pressure washer, thoroughly wash every inch of surface to be coated. (If you do not own a pressure washer, they are available at most tool rental centers. We suggest using a pressure washer with between 2500 and 3500psi). Be careful! You may not realize how powerful the force of water is, but a high- powered pressure washer can actually cut into concrete.

Note: any areas where water appears to bead or is repelled, there is a possibility that wax, grease, motor oil, transmission fluid or other oily residue exists in the substrate. If this is the case, you will want to use TSP, (Tri-sodium-phosphate), or other de-greaser and scrub area until water will penetrate the surface. Wash again with pressure washer after using any de-greasing agents or cleaners.

Examine The Concrete Floor

After pressure washing, examine the surface closely, you may find cracks, low or high spots, or other defects in the surface which should be repaired to achieve the best finished appearance.

Epoxy coating may fill and bond very fine hairline cracks, but larger cracks require use of crack filler, and for extremely wide, jagged and / or deep cracks, you may need to grind out concrete, and patch using epoxy / concrete patching kit.

If there are low spots in the concrete floor, use epoxy patching compound and trowel mix onto surface to level low areas.

Etching Concrete Floor

Once entire floor has been pressure washed, and de-greased (if needed), the entire surface must be etched to insure a proper bind between epoxy floor coating and underlying concrete floor.

To etch concrete, mix equal parts muriatic acid and water and disperse over surface of concrete floor. Allow acid to sit on floor for approximately 20 minutes, then rinse thoroughly with clear, clean water until all remaining acid has been washed away.

Mixing Epoxy (for Garage Floor Application)

As mentioned, we are using our 65% Solids Epoxy for coating a garage floor as the example job in this application guide. This product is mixed in equal parts, (mix equal amounts of Part A with equal amount of Part B). Be sure to only mix as much as you can apply in a 30-60 minute period.

To mix 2-gallons of epoxy, pour Part A and Part B into a clean 5-gallon plastic bucket. Mix using a Jiffy Mixer or mixing paddle on a low speed 1/2 drill. Start with mixer at bottom of bucket — do not lift mixer / paddle in and out epoxy as this will induct air into the mixture. Mix thoroughly for 3 to 3 1/2 minutes, (use a timer — it is very important that you do not mix for longer or shorter periods of time).

Applying Epoxy (to prepared concrete garage floor)

garage, concrete, floor painting, ceramic, tiles, concrete, stain, epoxy

You will want to begin at the furthest point from the door(s) using a paintbrush and cutting in some edges, inside corners, doorway openings and other areas where epoxy can not be easily applied with a roller. Do not cut in too far ahead to prevent drying. After cutting in, begin to roll out floor using a paint roller with a solvent resistant phenolic core shed proof epoxy roller cover, (covers are available from U.S. Industrial Coatings).

You will paint your way out (of the garage), so that you do not need to walk on wet epoxy or drag equipment or materials across wet areas of floor. Continue to cut-in and roll-out areas, always applying wet epoxy to wet epoxy until entire floor area has been coated with epoxy.

Time Frame (time to dry, between coats, walk on, etc..)

Each U.S. Industrial Coatings floor-epoxy coating product has specific properties including drying or curing times. As with other areas of the application guide, we will use the example of applying our 65% solids fast-set epoxy coating over a concrete garage floor.

The first coat of epoxy should be dry to the touch in 1 to 3 hours. There is no need to touch floor unless you plan to add additional coats of epoxy. To test, press thumb into epoxy coating (on last area applied) after waiting 2 to 3 hours. If no fingerprints are left in epoxy, you may begin applying additional coat.

Once all coats have been applied, allow 16 to 24 hours before even light foot traffic is allowed across floor. The floor should be fully cured anywhere from 3 to 7 days, (depending on temperature, humidity, total thickness of application and proper ventilation.

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