How to Clean a Concrete Patio (Step-by-Step Guide)

A stained, grimy patio can make your outdoor space look neglected. Dirt, mold, mildew, and algae build up over time, leaving your concrete surface looking dull and discolored. The good news? You don’t need expensive tools or professional help to restore its look.

With the right materials and proper cleaning techniques, you can bring your patio back to life in just a few steps. Plus, we’ll show you how to prevent stains from coming back, ensuring your outdoor space stays fresh and inviting.

Let’s get started.

Materials You’ll Need

Before you begin cleaning, gather these essential supplies:

Broom or leaf blower – To remove loose debris like dust, dirt, and leaves.

Garden hose or pressure washer – For rinsing off dirt and cleaning solutions.

Scrub brush with stiff bristles – To remove deep stains and grime.

Mild dish soap or pH-neutral concrete cleaner – For general cleaning without damaging the surface.

White vinegar or baking soda – Effective natural stain removers.

Oxygen bleach (optional) – Ideal for deep cleaning tough stains.

Degreaser (optional) – Useful for removing oil and grease stains.

Sealer (optional) – To protect against future stains and wear.

Rubber gloves – To protect your hands from cleaning agents.

Best Cleaning Method for a Concrete Patio

Not all stains are the same, so choosing the right cleaning method ensures the best results:

General Dirt & Grime: A mixture of mild dish soap and warm water works well for everyday cleaning.

Mold & Mildew: Use a solution of equal parts vinegar and water, or mix one part bleach with three parts water for stubborn growth.

Oil & Grease Stains: Sprinkle baking soda or cornstarch on the stain, let it sit for 30 minutes, then scrub with dish soap and hot water.

Rust Stains: Pour lemon juice or white vinegar on the stain, let it sit for 10 minutes, then scrub with a brush.

Algae & Moss: A mixture of white vinegar and water, or a specialized concrete cleaner, can remove green growth.

Tire Marks: Apply degreaser and scrub with a stiff brush before rinsing with water.

For deep cleaning, using a pressure washer can quickly remove stubborn stains and restore your patio’s original color. Be sure to use the correct pressure setting to avoid damaging the concrete.

Step-by-Step: How to Clean a Concrete Patio

Follow these detailed steps to ensure your patio is thoroughly cleaned:

Clear the Area

Remove all furniture, potted plants, and decorations to access the entire surface.

Sweep or Blow Away Debris

Use a broom or leaf blower to remove loose dirt, dust, and leaves.

Pre-Wet the Surface

Spray the patio with a garden hose to loosen dirt and prevent cleaning solutions from soaking in too quickly.

Apply the Cleaning Solution

Depending on the stain type, mix your chosen cleaner and apply it evenly using a mop or sprayer.

Let the Solution Sit

Allow the cleaner to penetrate for 10-15 minutes, especially for stubborn stains.

Scrub Stubborn Stains

Use a stiff-bristled brush to scrub tough spots, applying extra pressure where needed.

Rinse Thoroughly

Use a garden hose or pressure washer to rinse away the cleaning solution and loosened grime.

Let It Dry Completely

Allow your patio to air-dry fully before replacing furniture and decor.

How to Prevent Patio Stains

Cleaning is only half the battle—proactive maintenance keeps your patio looking fresh for longer. Here’s how:

Seal the Concrete: Applying a high-quality concrete sealer creates a protective barrier against stains and moisture.

Clean Spills Immediately: Wipe up oil, grease, or food spills as soon as they happen to prevent them from soaking in.

Use Outdoor Rugs & Mats: Placing rugs or mats in high-traffic areas minimizes wear and tear.

Trim Nearby Vegetation: Overhanging trees and bushes drop leaves and sap, leading to stains.

Establish a Cleaning Routine: Sweep weekly and rinse your patio monthly to prevent dirt buildup.

Avoid Harsh Chemicals: Some chemicals can weaken concrete over time, leading to quicker staining.

Prevent Stains with Proper Installation and Maintenance

If you’re installing a new patio or looking to upgrade your existing one, keep these factors in mind:

Use Stain-Resistant Concrete: Some mixes have additives that make them less porous and more resistant to staining.

Ensure Proper Drainage: A slight slope prevents water from pooling, reducing mold and mildew growth.

Choose a Light Color: Lighter concrete surfaces tend to show fewer stains compared to darker ones.

Apply a High-Quality Sealer: A durable concrete sealer extends the life of your patio and minimizes staining.

Avoid Using Metal Furniture Without Pads: Metal furniture can leave rust stains; using rubber or felt pads prevents this issue.

By following these expert cleaning and maintenance tips, you’ll keep your concrete patio looking spotless and well-maintained for years to come.

Need a Patio That Stays Clean and Durable?

Regular maintenance goes a long way, but if your patio needs more than just a deep clean, Complete Casa Construction can help.

Whether it's sealing, repairs, or a brand-new concrete patio, we’ve got you covered. Contact us today for expert patio installation and restoration services in Ontario!

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