Spray this mixture on remaining spots.
Clean aluminum siding tsp.
And in some cases it isn t.
To clean aluminum siding having mildew use a solution of one part bleach and four parts water.
You can also look for special cleaning solutions that are meant for cleaning aluminum siding at your local hardware store.
Manual cleaning is preferred.
Vinegar and borax are other good eco friendly alternatives for cleaning mold and mildew.
It s not uncommon to have a mildew problem on aluminum siding depending on where you live.
Tsp is a powerful cleaner that i use for all sorts of tough jobs from scrubbing our tile floors and kitchen cabinets before painting to washing aluminum siding.
For mildew killing household bleach is added to the tsp water mixture.
Warm water for heavy duty cleaning to 1 cup tsp to 3 quarts warm water for ridiculously heavy duty cleaning source the savogran company.
How to clean aluminum siding with a power washer the correct way.
Even after pressure washing you may still find that a thin layer of dirt remains on the siding.
It wasn t so long ago that trisodium phosphate tsp was a go to choice for tough cleaning jobs especially on exteriors.
It uses peroxide to brighten and renew surfaces without bleach while removing dirt and stains from mold mildew moss algae chalking and more.
As an experiment rub a clean white cloth across the unwashed siding.
The cloth will likely come up dark gray with a layer of fine soot.
If mold or mildew is the culprit spraying with a bleach solution will remove it.
Check your siding first for signs of mildew chalking and needed repairs.
To clean stubborn mildew you will need bleach.
Diluted in water and applied often with a stiff scrub brush it can remove.
But there are some.
To clean your aluminum siding choose a dry windless day.
Once you ve determined what cleaning method to use try to work in the shade as much as possible.
1 2 cup tsp to 2 gal.