My neighbor taught me this trick to clean green algae off siding with 0 effort. Here’s how it works
Avoid blasting water upward underneath siding panels.
Step 3: Apply the Cleaning Solution
Mix the siding cleaner according to the product instructions.
For many homes, an oxygen-based cleaner is a useful option because it can loosen organic staining without the harshness associated with stronger chlorine solutions.
Apply the cleaner generously to the algae-covered area.
For large walls, work in sections so the solution does not dry before you rinse it.
Step 4: Let It Sit
This is the part that makes the method feel almost effortless.
Instead of immediately scrubbing, allow the cleaner to remain on the surface for the amount of time recommended on the label, often around several minutes.
As it sits, it begins breaking down the algae and loosening its grip on the siding.
Do not let the cleaning solution dry completely on the wall.
