However bleach can change the color of the metal.
Bleach on aluminum siding.
Make sure the aluminum siding is still wet from the rinsing step.
Don t mix bleach with any cleaner that has ammonia in it.
Clean the aluminum siding with a sponge dipped in the water bleach solution.
The bleach is not strong enough to eat away at the metal.
Add 3 4 cup of household bleach or vinegar to each gallon of water if needed.
Fill the bucket with hot water and a biodegradable detergent according to the product s label.
It can be applied with a pressure washer with water supplied from a tap and then rinsed off after five to 10 minutes.
Like using homemade deck cleaner with borax there are eco friendly alternatives for cleaning without bleach or store bought chemicals.
Bleach will not cause immediate corrosion or bubbling on aluminum foil or an aluminum surface.
To clean aluminum siding having mildew use a solution of one part bleach and four parts water.
Scrub as hard as possible without buckling the aluminum.
Step 4 fill a clean empty garden sprayer with a chlorine bleach and water mixture.
Step 6 rinse off the siding with a hose and water.
With the ryobi chemical sprayer you just pop in a battery and turn it on.
If mold or mildew is the culprit spraying with a bleach solution will remove it.
Add bleach or vinegar if your siding shows any signs of mildew.
Let the cleanser sit for a couple minutes before scrubbing.
It s not uncommon to have a mildew problem on aluminum siding depending on where you live.
Spray this mixture on remaining spots.
After some time the aluminum surface may darken or even turn black.
If cleaning siding manually dilute 1 5 cups of the concentrate in 13 5 cups.
Spray down the siding with plain water from the garden hose.
Trisodium phosphate is powerful so be cautious.