What’s Really Growing on Your Siding
You’ve probably seen it before: patches of green creeping up the side of your house. It looks harmless enough—maybe even like it just needs a quick rinse. But that green buildup is usually algae, and if you’ve got black streaks mixed in, that’s often mold or mildew tagging along. Left unchecked, this growth can do more than hurt your curb appeal. It slowly degrades siding, traps moisture, and can even create health hazards for anyone in your home.
Algae thrives in damp, shaded areas where water lingers, which makes it incredibly common in regions with humid summers or plenty of rainfall. According to the CDC, mold and mildew growth in and around the home can aggravate allergies and respiratory issues, especially for those with asthma. And while it may start as a surface issue, that moisture retention can lead to long-term damage that weakens your siding material over time.
Why DIY Pressure Washing Can Backfire
Many homeowners grab a pressure washer thinking it’ll fix the problem in one afternoon. While blasting algae off your siding seems simple enough, high-pressure washing can actually cause more harm than good. It strips protective finishes, forces water behind your siding, and creates the perfect environment for even faster regrowth. That’s why soft washing—a method using low-pressure water combined with safe cleaning solutions—is the smarter option.
Soft washing doesn’t just remove what you see; it also targets the spores that allow algae and mold to come back. Studies show that professionally treated siding stays cleaner three to four times longer than siding that’s been hit with a basic pressure wash. Plus, it’s safer for your home’s exterior and less likely to cause costly damage.
Conclusion
Algae on your siding isn’t just an eyesore—it’s a warning sign that your home needs attention. Instead of putting it off or trying to blast it away yourself, trust the pros who can do it safely and effectively. At Dri-Masters, our exterior home cleaning services use soft washing techniques to remove algae, mold, and mildew without damaging your siding. Pair it with our roof cleaning to keep your whole exterior spotless, or add in deck and fence cleaning for a full refresh. We also offer pressure and power washing where it’s safe and effective. Ready to see your home look brand new again? Schedule your cleaning today and protect your siding before the damage gets worse.