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No Pressure, No Streaks, Just Results.
Get An EstimateRoof cleaning isn’t just about curb appeal—it’s a smart investment in your home’s longevity. In the Portland area, moss, algae, and debris thrive in our damp climate, breaking down roofing materials and leading to costly repairs. At Anderson Exterior Maintenance, we use a gentle soft wash method to safely clean your roof, extend its life. Soft washing your roof can take 24-48 hours to fully kill any moss or algae and take up to a month for your roof to look brand new. Protect your biggest investment—without causing damage. In the rainy seasons like early spring and fall we offer powder options as well!
Our soft wash roof cleaning service has transformed homes across the Portland area. Check out these real before-and-after photos to see how Anderson Exterior Maintenance removes moss, restores curb appeal, and protects your roof without causing damage. Clean, safe, and reliable results—every time.
1. Inspect the Roof
Thorough Roof Evaluation:
Our team begins every roof cleaning service with a detailed inspection to identify any existing damage or potential obstacles that could interfere with the cleaning process. This ensures a safe and efficient cleaning experience, minimizing the risk of further damage.
Moss and Algae Assessment:
We carefully evaluate the extent of moss, algae, and lichen buildup on your roof. This allows us to develop a customized treatment plan that effectively addresses the severity of the growth, ensuring long-lasting results.
2. Scrubbing and Removing Large Moss Clumps
Targeted Moss Removal:
If large clumps of moss are present, our team carefully scrubs and removes them using specialized soft-bristle brushes or roof-safe rakes. This process prevents further damage to the shingles and ensures the roof is thoroughly cleaned without risk of scratching or dislodging roofing materials.
Effective Moss Eradication:
We take extra care in removing stubborn moss clusters to reduce the risk of regrowth, improving the overall health and longevity of your roof. This step is essential for preparing the roof for the next phase of treatment.
3. Chemical Treatment for Moss Removal
Allow the Treatment to Work:
After removing large moss clumps, we apply a specially formulated, environmentally friendly chemical treatment to target any remaining moss, algae, and lichen. This treatment works by breaking down the moss, causing it to loosen and naturally fall off your roof.
Moss Breakdown and Removal Timeline:
Depending on the severity of the moss growth and weather conditions, the chemical treatment may take anywhere from 24 to 48 hours to start showing visible results. However, it can take up to 4 weeks for all the moss to fully break down and completely fall off your roof. The treatment works gradually, ensuring that the moss is safely removed without causing any damage to your roofing materials.
We’re three brothers with a passion for doing things right — no shortcuts, no upsells, just honest, high-quality roof cleaning you can count on. Our soft wash method safely removes moss, algae, and grime without damaging your shingles, helping your roof last longer and look better. We show up on time, respect your property, and treat your home like it’s our own. If you want results that speak for themselves and service that feels personal, we’re your crew.
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