7 Ways to Clean Your Concrete Surface–Plus Bonus Tips for Sealing Concrete

With warmer weather finally here, it’s the perfect time to kick off your outdoor projects and get your home ready for summer fun. After a long winter, patios, driveways, and walkways often show signs of wear—from dirt buildup to stains and discoloration—that can take away from your outdoor space’s beauty and function.

At Lymm Construction, we’ve been Omaha’s trusted experts for all things concrete for over 30 years. We know how important it is to not only keep your concrete surfaces clean but also properly sealed to protect your investment and maintain that sharp, fresh look.

Now that Omaha’s weather is finally warming up, it’s the perfect time to give your concrete surfaces the attention they deserve—so let’s dive into 7 easy ways to clean your concrete and get your outdoor space ready to enjoy.

7 Ways to Clean Your Concrete Surfaces

Here are seven tried-and-true ways to get your concrete surfaces looking like new—whether it’s your driveway, patio, or walkway.

1. Start with a Thorough Sweep
   Before any deep cleaning, remove all loose debris like leaves, dust, dirt, and twigs. Sweeping clears the surface and exposes stains or spots that need special attention. Remember, you can’t clean what you can’t see, so a good sweep sets the foundation for a successful clean.

2. Use a Pressure Washer
   One of the most effective tools for outdoor concrete cleaning is a pressure washer. It blasts away built-up grime, algae, mold, and stubborn stains with ease. Just be careful to use the right pressure settings—too high can damage the surface, while too low might not be effective. If you’re unsure, it’s always a good idea to consult a professional.

3. Treat Stains Individually
   Not all stains are created equal. Oil stains need degreasers designed for concrete, while rust stains often respond well to household items like vinegar or baking soda. For organic stains such as moss or mildew, gentle cleaners specifically formulated for concrete work best. Treating stains individually helps prevent spreading and ensures the best results.

4. Scrub with a Stiff-Bristle Brush
   For smaller areas or spots where pressure washing isn’t practical, a stiff-bristle brush can be a great help. Manual scrubbing allows you to target trouble areas with precision and can remove dirt and stains that machines might miss. Just be sure to use brushes that won’t scratch or wear down your concrete.

5. Use Mild Detergent or Concrete Cleaner
   Choose your cleaning products carefully. Mild detergents or specialized concrete cleaners are effective without being harsh on your surface. Avoid acidic or bleach-based cleaners that can degrade the concrete or break down any existing sealant, leading to more problems down the line.

6. Let It Dry Completely Before Sealing
   This step is often overlooked but crucial. Before applying any sealer, make sure your concrete is completely dry—this usually takes 24 to 48 hours depending on weather conditions. Sealing over damp concrete traps moisture, which can cause bubbling, peeling, or discoloration.

7. Repeat as Needed Seasonally
   Concrete cleaning isn’t a one-time task. To keep your surfaces looking their best year-round, plan to clean them at least twice a year—typically in spring and fall. Regular maintenance helps prevent buildup, extends the life of your concrete, and makes sealing more effective.

If you’re cleaning outdoor concrete in Omaha, make sure you’re using the right tools for the job—and avoiding anything that might damage the surface. Taking these steps will keep your concrete looking sharp and ready for everything the season brings.

Now That Your Concrete Is Clean, Here Are Some Tips for Sealing

Once your concrete is clean and dry, sealing it is one of the best ways to protect your investment. A high-quality sealer acts like sunscreen and armor for your concrete—it shields the surface from water damage, oil stains, fading from the sun, and everyday wear and tear.

Why seal your concrete?
Unsealed concrete is porous, which means it can easily absorb water, oil, dirt, and de-icing salts. Over time, this leads to cracking, surface breakdown, and stubborn stains. A good sealer prevents that absorption, making the surface easier to clean and helping it last longer.

When should you seal concrete?
Most concrete surfaces should be resealed every 2 to 3 years. But if your concrete is starting to fade, absorb water instead of repelling it, or looks dull and worn, it may be time to reapply sooner. Keep an eye on how it looks after each winter—that’s usually when signs of wear appear.

Choose the right sealer for your needs.
Not all sealers are created equal.

• Penetrating sealers soak into the surface and are great for driveways, sidewalks, and high-traffic areas. They’re nearly invisible and provide long-term protection against water and salt.

• Film-forming sealers sit on top of the surface and are better for patios, decorative finishes, and stamped concrete. They enhance color and add a slight sheen or glossy finish.

How to apply sealer like a pro:

• First, ensure your concrete is completely dry—usually at least 24–48 hours after cleaning.

• Apply the sealer using a pump sprayer or roller in thin, even coats. Two light coats are typically better than one heavy one.

• Work in manageable sections, and avoid overlapping too much to prevent streaks.

• Always follow the product instructions for the best results.

Let it cure properly.
After sealing, you’ll need to stay off the surface for at least 24 hours—sometimes longer if the weather is cool or humid. Give it time to cure fully before walking or driving on it. Rushing this step can cause the sealer to peel or wear unevenly.

Call Omaha Concrete Professionals–Lymm Construction

Cleaning and sealing concrete might sound straightforward, but mistakes can lead to permanent stains or damage that’s costly to fix. That’s why many Omaha homeowners and businesses trust Lymm Construction for expert concrete care.

Whether you need help with seasonal maintenance or are ready for a professional cleaning and sealing service, we bring 30+ years of experience delivering top-quality results. A quick consultation with us could save you time, money, and frustration down the road.

Call Lymm Construction today to schedule your concrete cleaning or sealing service—and get your outdoor spaces ready for summer the right way.