Stucco is a beautiful, durable exterior finish—until it starts looking dirty, stained, or moldy. Over time, even the best-maintained stucco collects dust, mildew, and environmental buildup that dulls its appearance. The good news? Cleaning stucco isn’t as intimidating as it seems, and with the right approach, you can restore its charm without causing damage.
Whether you’re tackling a small patch or planning a full-home refresh, this guide will walk you through how to clean stucco like a pro. We’ve also included tips from professional cleaners, real-life homeowner experiences, and expert advice from the team at Cajun Cleaner.
What You Need to Know Before You Start
Stucco isn’t like vinyl siding or brick. It’s porous and textured, which means dirt doesn’t just sit on the surface—it can settle into the material. That makes gentle, thorough cleaning essential.
Before you begin, identify the type of stucco on your home:
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Traditional stucco (cement-based) – durable but prone to cracking
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EIFS (Exterior Insulation and Finish Systems) – more delicate, requires low-pressure cleaning
Check for any cracks or damaged areas before cleaning. Water can seep into gaps and lead to costly repairs.
Tools and Supplies You’ll Need
Here’s a basic toolkit for safe and effective stucco cleaning:
| Tool/Supply | Purpose |
|---|---|
| Garden hose | For rinsing and gentle pressure cleaning |
| Soft-bristle brush | To scrub stains without damaging texture |
| Mild detergent or stucco cleaner | Breaks down dirt and organic matter |
| Bucket or sprayer | For mixing and applying cleaning solution |
| Protective gear (gloves, goggles) | Safety while handling chemicals |
For tougher stains (like mold or mildew), you might also need:
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Oxygen bleach (safer than chlorine-based bleach)
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Low-pressure washer (under 1,500 PSI max)
Avoid high-pressure washing—it can erode the stucco surface and drive water into your walls.
Step-by-Step: Cleaning Stucco Safely
1. Rinse the Surface
Start by rinsing the entire area with a garden hose. This removes loose dirt and softens any buildup.
Tip from Cajun Cleaner: “Start from the bottom and work your way up when rinsing to prevent streaks. Reverse the order when rinsing off soap.”
2. Apply Cleaning Solution
Mix a mild detergent with water (or use a specialized stucco cleaner). Apply using a sprayer or sponge, covering all areas evenly.
Let it sit for 5–10 minutes but don’t allow it to dry out.
3. Scrub Gently
Use a soft-bristle brush to scrub in a circular motion. For high areas, an extension pole works well. Be patient—rushing could damage the texture.
Tackling Common Stucco Stains
| Type of Stain | Suggested Solution |
|---|---|
| Mold or Mildew | Oxygen bleach + warm water |
| Rust Stains | Commercial rust remover for stucco |
| Grease or Oil | Degreasing cleaner (non-abrasive) |
| Dirt and Dust | Mild soap + soft brush |
For persistent mold, a second round of cleaning may be necessary. If that doesn’t work, consider consulting a professional.
When to Use a Pressure Washer (and How)
Pressure washing stucco requires caution. Always use a wide spray tip (25–40 degrees), and keep the pressure under 1,200–1,500 PSI.
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Hold the nozzle at least 18–24 inches from the surface
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Avoid cracks or corners where water can seep in
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Don’t aim directly upward—water can get behind the stucco
A light rinse is often all you need. If you’re unsure, reach out to a company like Cajun Cleaner—they specialize in safe, low-pressure stucco cleaning that restores without risk.
How Often Should You Clean Stucco?
Most homes only need a good cleaning once every 12–18 months. However, if you live in a humid region, have shaded areas prone to mold, or deal with frequent dust (like near a construction site), more frequent cleanings may be needed.
One homeowner in Baton Rouge shared their experience:
“We clean our stucco once a year and use a vinegar-based solution. It keeps the color fresh without needing a repaint. Cajun Cleaner helped us the first time—we’ve done it ourselves since.”
Preventative Maintenance: Keep Stucco Looking Its Best
To reduce the need for heavy-duty cleaning:
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Trim back trees and shrubs to minimize debris
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Rinse walls after storms or wind-heavy days
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Fix cracks promptly to avoid moisture intrusion
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Seal stucco every few years to protect against staining
Regular maintenance goes a long way toward keeping your home’s exterior healthy and attractive.
Final Thoughts
Learning how to clean stucco doesn’t require special equipment or expensive services—just patience, the right tools, and good technique. Whether you’re maintaining curb appeal or prepping to repaint, a clean stucco surface is the first step.
If DIY isn’t your thing or your stucco needs deeper care, professional services like Cajun Cleaner can take the guesswork out of the job. With years of experience in stucco-safe cleaning, they help homeowners restore beauty without compromising the surface.
And remember—cleaning stucco isn’t just about appearances. It’s part of preserving the value and integrity of your home.
