CNC Softwash

🏡 Why Your House Turns Green (And How to Stop It)

If you live in North Carolina, you’ve probably noticed houses turning green or black on the siding after a while. A lot of homeowners think it’s just dirt, but most of the time it’s actually algae and mildew growing on the surface.

This happens because our humid climate creates the perfect environment for organic growth.

Here are a few things homeowners can do to slow it down:

✅ Trim back bushes and trees that keep areas shaded and damp

✅ Rinse pollen and debris off siding occasionally

✅ Keep gutters clean so water doesn’t run down the walls

✅ Have your home soft washed every 1–2 years to safely remove algae and buildup

One thing to avoid: high pressure on siding. Pressure washing vinyl or painted surfaces can actually force water behind the siding and cause damage. That’s why professionals use the soft washing method — low pressure with specialized cleaners that kill the algae at the root.

If you ever have questions about house washing, roof cleaning, gutters, or exterior maintenance, feel free to ask. Always happy to help homeowners keep their place looking great.

— CNC Softwash

📞 (919) 418-5884

Thank you Express Concretefor having us help out. This is 6 month old concrete that can be easily damaged without knowing how to clean properly.

Buying your dream land or already have your dream house we would love to help you out.

Cleaned gutters in Fuquay Varina.