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Yes, you can pressure wash epoxy floors, but you must take precautions to avoid damaging the surface. While most epoxy floors can be cleaned with a mop, you might choose to pressure wash if the floor is stained, has ground-in dirt, or is covered with mold or mildew. To do so safely, first soak any stains or dirty areas with a gentle cleanser. Use a lower pressure setting with a gentle nozzle, such as a green, white, or black tip, or a 45-degree angled tip. Keep the spray nozzle at least 18 inches away from the floor to protect the surface. Using a surface cleaner attachment or a rotary scrubber can also help prevent overspray. Be cautious if using a power washer that heats the water, as the combination of heat and pressure may be too powerful and could damage the epoxy coating.

Using a wire brush, forcefully scrub the surface to remove paint from metal. You’ll want to remove any lingering rust, too. For larger areas with caked-on rust, you may need to use a wire brush drill attachment. If the paint still won’t budge, apply a chemical paint stripper to the area and scrape off the paint, after following the paint stripper’s instructions.

WD-40 can help remove paint on wood floors, but use it cautiously. Start with a small amount and let it sit for a few minutes, then gently scrape the paint off using a plastic (not metal) scraper. You may want to test it first on a hidden area to ensure it doesn't damage the finish. Professional products specifically designed for hardwood may be a better choice for large or stubborn paint spots.

Scrape softened caulk with a putty knife or slice hardened caulk with a utility knife. Hard-to-remove caulk generally requires more time exposed to a softening solution, like a commercial product or rubbing alcohol. A few hours to a day later, the softened caulk will come off with the help of common household tools. In many cases, you can grab needle-nosed pliers for caulk with multiple old layers and pull the material off its base.