What’s That Green Stuff on Your Siding? How Power Washing Eliminates Algae and Moss

If you’ve ever noticed green stains or patches on the siding of your home in Northwest Indiana, you’re not alone. The culprit? Algae, moss, and mildew—common issues caused by moisture, shade, and organic buildup. While these growths may seem harmless, they can damage your home’s exterior over time. The good news? Power washing is the most effective way to remove them and keep your home looking fresh and clean.
What Causes Algae and Moss Growth on Siding?
Algae and moss thrive in damp, shaded areas, particularly on the north side of homes where sunlight is limited. Other factors contributing to growth include:
✅ High Humidity – Moisture in the air creates the perfect environment for algae and mildew.
✅ Tree Coverage – Overhanging trees provide shade and drop organic debris that encourages growth.
✅ Poor Drainage – Water that collects near your home’s foundation can lead to excess moisture on siding.
✅ Lack of Regular Cleaning – Without routine maintenance, algae and moss can spread quickly.
The Dangers of Algae and Moss on Your Home
Ignoring algae and moss buildup isn’t just an aesthetic issue—it can lead to long-term damage, including:
🔹 Siding Discoloration – Algae stains can permanently alter the look of your vinyl, brick, or wood siding.
🔹 Structural Damage – Moss retains moisture, which can seep into cracks and lead to wood rot or mold growth.
🔹 Health Hazards – Mold and mildew spores from siding can trigger allergies and respiratory issues.
How Power Washing Eliminates Algae & Moss
Professional power washing is the safest and most effective method for removing green buildup from your siding. Here’s how it works:
🔹 Low-Pressure Soft Washing – Unlike high-pressure cleaning that can damage siding, a soft wash system uses a gentle stream with eco-friendly cleaning solutions to break down algae and moss at the root.
🔹 Biodegradable Cleaning Agents – Specialized detergents not only remove existing algae but also prevent regrowth by killing spores and bacteria.
🔹 Rinse & Protect – After a thorough wash, your siding is left looking like new, with protective treatments that help keep algae from returning.
How to Prevent Algae and Moss from Coming Back
Once your home is power washed, follow these tips to keep your siding clean longer:
✔️ Trim Overhanging Trees – Increase sunlight exposure to prevent excessive moisture buildup.
✔️ Improve Drainage – Make sure gutters and downspouts are directing water away from your home.
✔️ Schedule Annual Power Washing – A professional cleaning once a year helps prevent regrowth.
✔️ Use Algae-Resistant Coatings – Some siding treatments can repel moisture and reduce algae growth.
Need Power Washing in Northwest Indiana? We’ve Got You Covered!
If your siding is covered in green stains, algae, or moss, don’t wait until it gets worse. At Blustream Power Wash, we specialize in safe and effective power washing services for homes across Northwest Indiana. Our expert team will restore your home’s curb appeal and protect it from long-term damage.
📞 Call us today at 219-370-6827 or Book Your Power Washing Online for a free estimate!


