Say Goodbye to Green Algae and Black Mold
Your sidewalk is the welcome mat to your home. Your porch? A daily gathering space. And your pool surround? It’s the centerpiece of summer memories. But when green algae, black mold, and years of grime take over, beauty gives way to danger and decay. Fortunately, we specialize in stone/concrete cleaning in Toronto GTA & Hamilton area — bringing your surfaces back to life safely and effectively.
The Silent Culprits: Algae, Mold, and Dirt
Stone and concrete may look tough, but they’re actually incredibly porous. That means they absorb moisture, trap dust, and become breeding grounds for:
- Green algae, which thrives in humid, shaded areas
- Black mold, notorious for creeping into cracks
- Bacteria and fungi, which feed on organic buildup
The result? Dark patches, slippery surfaces, and an unwelcoming appearance. Worse still, these organisms can break down the integrity of concrete and stone, leading to premature wear.
Our Proven Cleaning System: Safe, Effective, Restorative
We don’t just spray and pray. We use a specially formulated solution that actively kills algae, mold, and bacteria. Here’s how our process works:
Step 1: Surface Preparation
We sweep away loose debris and assess the condition of the area. We mask off sensitive areas like plants and adjacent materials.
Step 2: Application of Cleaning Solution
Our eco-friendly formula is sprayed evenly across the surface, designed to penetrate deep into the pores of concrete and stone. This solution:
- Kills mold spores and algae at the root
- Loosens dirt, oils, and organic buildup
- Starts to lift years of staining within minutes
Step 3: Dwell Time
We allow the solution time to work its magic. This ensures a deeper clean that isn’t just skin-deep.
Step 4: Low-Pressure Rinse
We don’t blast your surface with damaging pressure. Instead, we use low-pressure rinsing, which:
- Gently lifts away grime
- Avoids etching or surface damage
- Reveals the original color and texture underneath
Where We Work Our Magic
We specialize in refreshing a variety of outdoor surfaces across Toronto, the GTA, and Hamilton:
- Sidewalks and walkways
- Porches and entry steps
- Driveways and garages
- Patios and decks
- Pool surrounds
- Retaining walls and garden borders
- Flagstone and natural stone features
Why Pressure Washing Alone Isn’t Enough
Standard pressure washers may seem effective—but they often only remove the top layer of buildup while pushing spores and bacteria deeper into the material. Plus, high-pressure jets can:
- Crack mortar
- Damage joints
- Leave etch marks
Our method offers a deeper clean with zero structural risk.
Dangerous and Ugly: Why You Shouldn’t Wait
Green algae and mold aren’t just unsightly—they’re slippery and hazardous. Every year, homeowners in Southern Ontario suffer injuries due to slick concrete walkways. If your porch or pool deck turns into a skating rink after rain? It’s time to clean.
Burlington to Brampton, Hamilton to Scarborough—we’ve got you covered.
Whether you live in a leafy Hamilton neighborhood or an urban Toronto high-rise, your surfaces endure:
- Humidity and shade, encouraging algae
- Winter salt and snow, leading to staining
- Air pollution, darkening concrete over time
- Urban grime, particularly near busy streets
Customer Transformations: Real Results
“Our pool deck looked like it belonged in a haunted house. One afternoon later, it looked brand new. Safe, beautiful, and totally worth it!”
– Melissa B., Oakville
“My front steps were covered in black grime. I thought they’d need to be replaced. These guys made them look like stone again!”
– Jacob L., Burlington
Why Choose Us for Your Stone/Concrete Cleaning
- Locally based with deep knowledge of the climate and materials
- Fully insured professionals
- Eco-conscious products safe for pets and gardens
- Affordable pricing and clear estimates
- Flexible scheduling, including weekend options
Concrete Cleaning FAQs
How often should I clean my outdoor stone or concrete?
Once every 1–2 years is recommended, or more frequently in shaded or wet areas.
Is this cleaning safe around pools?
Yes. Our solution is safe for pool surfaces and won’t affect water chemistry when used properly.
Do you seal concrete after cleaning?
Sealing is optional, but we can recommend and apply breathable sealers for added protection.
Can you remove rust or oil stains?
Yes, we use targeted treatments for rust, oil, and even tire marks.
What’s the turnaround time?
Most jobs are completed within a few hours, and surfaces are usable again within 24–48 hours.
How Much Does Stone/Concrete Cleaning Cost?
We price based on surface area, material type, and grime level. As a guide:
- Sidewalk or small patio: Starting at $200
- Driveways and pool surrounds: $350–$800 depending on size
- Full property exterior packages: Custom pricing
Every quote includes a walk-through and visual inspection. No hidden fees, ever.
Let’s Restore Your Surfaces Today
Don’t let moss, mold, and grime take over your home’s exterior. Whether you’re prepping for summer parties, curb appeal, or just peace of mind, we’re ready to deliver a professional stone/concrete cleaning in Toronto GTA & Hamilton that brings results you can see—and feel.
Click below to request your free quote and consultation today!