You have spray paint on your concrete. Whether it is from accidental overspray or an intentional act of vandalism, it is frustrating!
Spray paint can be difficult to remove from concrete. I’ve outlined several methods for you to try. Start with the easiest method, then, if that doesn’t work, try another one. Eventually, your concrete should be paint-free!
Table of Contents
About Concrete and Spray Paint
Concrete is a porous material. This means that it has the ability to soak up liquids, including spray paint! Spray paint can be especially tricky to remove. It is quick-drying, and it is easy to apply multiple layers of paint quickly. This means you probably have several layers of paint to remove.
Spray paint may be easier to remove soon after it has been applied. Lighter colors should be even easier to remove. Thick, dark lines of spray paint will definitely take more time and elbow grease to completely eradicate. Be patient, and keep working on it!
Be Gentle with Your Concrete
Concrete may seem rough and tough, but it is possible to damage your concrete. Some of these paint removers use caustic chemicals. Test a small portion of your concrete before applying the remover to a large area! Check the test area for discoloration, or erosion.
Be Safe!
Spray paint and paint removers contain toxic materials. Always wear long sleeves and pants, gloves, eye protection, and a filtering mask while removing spray paint from concrete.
Soap and Water
It’s best to start with a simple solution! If you’re lucky, soap, water, and a little (or a lot!) elbow grease may take the spray paint right off of the concrete.
The benefits of this method are:
- You are using materials that you’re likely to have already.
- It is inexpensive.
- You don’t require toxic chemicals.
The downsides of using soap and water are:
- It may simply not work.
- You will have to use a lot of elbow grease!
- It may take multiple sessions to remove all the paint.
How it Works
Soap molecules have one end that attracts water, and another end that attracts dirt and grease. They essentially pull the dirt and grease off the surface of whatever you are washing. In the case of spray paint, soap may be able to break up the paint with the help of a scrubbing brush, of course!
How to Use it
You will need:
- Dishwashing liquid soap
- Warm or hot water
- A stiff-bristle scrub brush
- Buckets
- Protective gear
Steps:
- Mix up the soap and warm water in the bucket.
- Pre-soak the concrete with water.
- Then, get to work! Scrub the painted area with the brush until the spray paint comes off.
- Rinse the concrete thoroughly with fresh water.
Graffiti Remover
Graffiti removers are very effective against spray paint, because they’re chemically formulated to penetrate deep inside paint and destroy its adhesive qualities.
There are several specific graffiti removers on the market. I recommend Ready-Strip Graffiti Remover or Goof Off. Test a small area of concrete with the remover. If you don’t notice any discoloration, it should be safe to proceed with a larger area of concrete.
The benefits of using a graffiti remover are:
- They are relatively inexpensive.
- They are simple to use.
- Graffiti remover is usually very effective!
The downside to using graffiti remover is:
- It could discolor your concrete.
- It may not be effective on dark, or multi-layered spray paint.
- It uses toxic chemicals that could be dangerous if inhaled.
How it Works
Graffiti removers use a water-based formula that is designed to lift acrylic-based substances, like spray paint, off of a hard surface like concrete.
How to Use it
You will need:
- Graffiti remover
- A stiff-bristle scrub brush
- Warm Water
- Protective gear
Steps:
- Apply the graffiti remover in an even coat over the spray paint. Let it absorb for a few seconds.
- Rinse the entire area thoroughly with warm water. If you leave the remover on for too long, it will damage the concrete.
- Once the graffiti remover is rinsed from the area, use a scrub brush to scrub any remaining marks.
- If there is still paint, repeat these steps until all the spray paint is removed.
Power Washer
A power washer, also known as a pressure washer, sprays a stream of water at a high speed with a lot of force. It is useful for a lot of cleaning purposes, including spray paint removal from concrete!
Power washers are available in a variety of sizes. To get spray paint off concrete surfaces, you need a power washer that is capable of 2,000 to 3,000 psi.
Some small models, like this one, are capable of that kind of power. Otherwise, it may be best to invest in a more powerful, gas-powered pressure washer, like this one.
Do note that using a pressure washer for spray paint removal from concrete may only be suitable for outdoor areas since there’ll be a lot of water and it can easily become a huge mess if you try this indoors.
The benefits of using a power washer to remove graffiti are:
- A power washer has a lot of force to remove stuck-on paint.
- There is no need for chemicals.
- There is no need for manual scrubbing.
The downsides of using a power washer are:
- They are expensive.
- Power washers can be dangerous and need to be used properly.
How it Works
Power washers use the sheer force of the water to blast away dirt, grime, and even spray paint!
How to Use it
What you will need:
- A power washer that can reach 2,000-3,000 psi.
- Protective gear
Steps:
- Follow the instructions to assemble and prepare the power washer.
- Stand 8-12 feet away, and apply the water stream to the spray paint with a sweeping motion.
- Repeat until all the paint is gone.
Trisodium Phosphate (TSP)
Trisodium Phosphate, or TSP, is a heavy-duty cleaner that also works to remove spray paint from concrete and other hard surfaces. This water-soluble compound comes in a liquid or powder form. It is often used by professionals to clean stubborn dirt, grease, and stains.
TSP has been used less in recent years after some environmental concerns came to light. It causes increased algae growth in bodies of water, which can harm wildlife.
Benefits to TSP:
- TSP is a very effective cleaner!
- It is inexpensive
Downsides to TSP:
- It is dangerous to the environment.
- It is a toxic chemical. Handle with extreme care!
How it Works
As a phosphate solution, TSP is effective at breaking up paint and other difficult stains. It is typically made up of 75-80% trisodium phosphate, and 20-25% sodium carbonate.
How to Use it
You will need:
- Trisodium Phosphate
- A stiff-bristle scrub brush
- Warm Water
- A bucket
- Protective gear
Steps:
- Mix the TSP with the warm water according to the package directions.
- Dip the scrub brush in the solution, and apply it to the spray paint.
- Scrub thoroughly.
- Allow the TSP mixture to sit on the paint for 20 minutes.
- Rinse thoroughly.
- Repeat as needed.
Heat & Scrape
You can use something like a blow torch to heat up the affected area, and then attempt to scrape off the spray paint using blades or metal scrapers.
This is especially effective for smooth concrete surfaces, since the chance of damage is significantly less than in case of rough surfaces.
Get More Spray Paint!
This might be the most counter-intuitive solution of the lot. If nothing else works well, you can simply get a new can of spray paint that matches the color of your concrete surface, and simply apply a new coat over the affected area.
This is especially easier to do than other solutions for high-traffic areas like your concrete driveway. Over time with dust and grime accumulation, you may not even be able to tell the painted surface apart from the original concrete even if you look closely.
Final Thoughts
Hopefully one or more of these methods should remove all traces of spray paint from your concrete!
Try soap and water first, then move down the list. It may take multiple attempts to remove very stubborn spray paint, but your persistence will pay off!
