acids, toilet cleaners, or other household chemicals.
For routine cleaning, a purpose-made siding cleaner or oxygen-based product is often easier to use safely.
Don’t Forget to Test a Small Area
Before treating the entire wall, test your cleaner in a small, inconspicuous spot.
Wait for the area to dry and check for:
discoloration
fading
paint damage
surface changes
This simple step can prevent an expensive mistake.
How to Keep the Algae From Coming Back
Cleaning removes the existing growth, but reducing moisture can help slow its return.
Try to:
trim
