How to Power Wash a Garage Floor

If your garage floor is looking a little worse for wear, a power wash could be just what it needs to look like new again. Power washing is the best way to lift grime and dirt from concrete surfaces, leaving them clean and refreshed. Today we’re going to show you how to power wash a garage floor the right way. So that it looks as good as new! 

How to Power Wash a Garage Floor

We’ll discuss why power washing works best on these types of surfaces. What kind of equipment do you need for the job, safety precautions should be taken before beginning an outdoor project like this one. And finally – some tips for achieving better results when cleaning with a pressure washer. Read on to learn how easy it can be to restore your garage floor’s original beauty!

Summary: Power washing a garage floor can be an effective and efficient way to keep the space looking clean and tidy. It is important to use the right equipment when power washing, as it can cause damage if not used properly. Start by thoroughly removing any debris and dirt from the surface before beginning, then use a high-pressure washer set to low pressure to remove any dirt and grime from the floor.

Tools You Will Need

  • A pressure washer with a minimum of 3,000 PSI output.
  • Cleaning solution or detergent specifically made for pressure washing.
  • Safety goggles and gloves protect your eyes and hands 
  • Sturdy ladder or step stool to reach high areas.

6 Steps Guide on How to Power Wash a Garage Floor:

1. Clear the Area of Any Debris

Before beginning to power wash the garage floor, make sure to clear the area of any debris or clutter. The surface you are working on must be free of any large objects that could potentially cause damage when coming into contact with the spray from the power washer. 

Anything sitting on top of the floor should either be moved out of the way or covered with a tarp. This helps ensure that there are no distractions during your task and that you can complete it efficiently!

Clear the Area of Garage Floor

2. Prepare Your Pressure Washer

Preparing your pressure washer for power washing a garage floor is an important step in ensuring you’re getting the best job done. Before starting up your pressure washer, fill it with a cleaning solution or detergent that has been designed specifically for pressure washing.

Not all solutions available on the market are suitable for pressure washing and using the wrong one can lead to damage to the surface stoning treated. When selecting a cleaning solution, be sure to check that it is labeled as safe for use with pressure washers and is specific to the type of surface being cleaned; whether wood, concrete, or stone.

Following these steps will help ensure that you get great results on your garage floor and other surfaces you may be treating with your pressure washer.

3. Set the Pressure Washer to the Appropriate Psi

The first step to power washing your garage floor is to locate and turn on the water supply. For optimal results, make sure that you have a pressure washer set up with proper PSI before you begin. PSI is the pressure rating for a particular unit, and it should be adjusted for your specific application. 

After selecting the correct setting, direct the pressure nozzle at the top of any cracks or gaps to get rid of dirt and debris from those problem areas. After that, angle it rapidly over all of the other surfaces in your garage. Power washing your garage floor is a fast and efficient way to remove oil stains, dirt, and grime while restoring shine to most surfaces.

Preparing Your Pressure Washer

4. Begin Power Washing Your Garage Floor

Before you know it, spring is here which means the start of a new cleaning cycle. In this case, power washing your garage floor. Start by working at one end and sweeping your way over the entire area in a steady motion until all the dirt and debris that has built up over time is removed.

Change the soap concentration as you go depending on how heavily soiled different sections may be for a better-cleaned surface overall. To finish off the job, hose down the garage from top to bottom followed by using a leaf blower to dry off as much water as possible.

For those difficult-to-reach cracks and crevices use an attachment brush or even just your fingertips dipped in soapy water. With this process completed thoroughly, not only will your garage floor look brand new but it’ll also help guard against future grime keeping it nice and clean!

5. Rinse Off Any Remaining Cleaning Solution

After completing the power washing of the garage floor, it is important to make sure any remaining cleaning solution or debris is removed. This can be done by using a garden hose and letting the water run for a few minutes over the entire floor surface. Adding some mild detergent may help rinse off any stubborn grime that has been missed by the power washer. 

Once finished, allow some time to let the water fully drain from the concrete before bringing in anything that can be stained by any residual dirt or soap. Properly rinsing off your garage floor after pressure washing will help keep it clean and attractive for long periods.

Power Washing Your Garage Floor

6. Allow the Floor to Dry Completely

Allowing your garage floor to dry after it has been power washed is crucial to ensure you can use it again as soon as possible. Moisture can linger in the concrete of your garage and without proper ventilation, could lead to the growth of mold or mildew.

To prevent this, give your parking lot plenty of time for the water to evaporate completely before moving furniture or equipment back inside. 

Wiping down any surfaces that have come into contact with water can also help alleviate any potential moisture issues. Once you’ve given all areas ample time to dry – typically, 24 hours should be sufficient – you can confidently allow all objects back onto the now considerably attractive ground below.

Safety Tips

  • Always wear safety goggles and gloves when operating a pressure washer.
  • Never point the pressure washer at yourself or anyone else.
  • Keep the power washer pointed away from windows, doors, and other potential sources of damage.
  • Always keep the power washer in a secure area to avoid any accidents.
  • Do not attempt to power wash a garage floor unless you are experienced and understand the safety guidelines.

Power washing your garage floor is an easy way to restore shine and remove dirt, oil stains, and grime from the surface. With this handy guide, you can successfully clean your garage floor in no time!

How to Properly Rinse Off Your Garage Floor After Pressure Washing?

Pressure washing your garage floor can be an effective way to remove dirt and debris that builds up over time. After the pressure washing is complete, it is important to rinse off the surface of your garage floor properly. Start by removing any surface debris that may have been left behind before rinsing with a garden hose set at a low-pressure spray. 

As you rinse, be sure to encourage all of the residues toward the drain so it doesn’t accumulate on the floor or increase the chances of slippery surfaces. Once you’ve gone over every inch of your garage floor, use a squeegee to help draw out any excess water that remains on the surface. 

Allow it to air dry thoroughly before allowing traffic in the area. With these simple steps, you can effectively clean and maintain your garage floor for optimal safety and performance.

Wear Safety Goggles and Gloves When Power Washing

How To Get the Best Results When Power Washing Your Garage Floor?

Power washing your garage floor can be a great way to get rid of any dirt and debris. To get the best results, you should begin by cleaning the surface with a top-grade cleaner formulated for concrete or cement floors, making sure to remove all dirt, grease, and oil. 

Once the floor is dry and cleaned, it’s time to start pressure washing at an angle to minimize overspray. Starting at one end of the garage and working your way back, move the power washer slowly along the floor in overlapping strokes. 

Additionally, maintain a distance of 10–12 inches away from the surface as you spray, and make sure to use a water stream no stronger than 1500 PSI. Finally, let the floor dry completely before applying any epoxy sealant or paint product. Following these guidelines will ensure that you will achieve satisfactory results when power washing your garage floor!

How to Make Your Garage Floor Look Brand New with Power Washing?

Power washing is a great way to quickly and easily have your garage floor looking brand new. Pressure washers use high-powered jets of water to clean out dirt, dust, grease, and another residue that may be present. 

By following a few simple steps you can get your garage floor sparkling in no time! Start by sweeping the floor of any loose debris and setting up the pressure washer making sure to use protective gear such as safety glasses or goggles to protect yourself during the power washing process. 

Next, adjust the pressure according to the surface you are cleaning. Start in a corner and work your way outward making sure not to hold the pressure washer too close to avoid damaging surfaces. After cleaning, let the garage dry before driving or walking on it, and enjoy a brand-new look for many years!


Although power washing your garage floor may seem like a daunting task, it is quite simple. You should carefully determine how to power wash a garage floor. 

By following these easy steps, you will have a clean and shiny garage floor in no time. Do you have any tips for power washing a garage floor? Share them with us in the comments below!

Photo of author

Rick Kelly

I am Rick. I grew up helping my dad with his handyman service. I learned a lot from him about how to fix things, and also about how to work hard and take care of business. These days, I'm still into fixing things- only now, I'm doing it for a living. I'm always looking for new ways to help people grow and develop. That's why I have created this blog to share all my experience and knowledge so that I can help people who are interested in DIY repair.

Leave a Comment