The rust stains are not real rust but lime deposits.
Best way to remove rust stains from vinyl siding.
Scrub the area with a scrub brush and the solution.
Oxalic acid crystals with 1 cup warm water.
Scrub the rust stained area with a nylon.
Make a thin cleaning paste using bar keeper s friend and clean water.
Mix a strong solution of siding cleaner or other strong detergent and hot water.
A lot of siding has grooves and textures and the brush will make sure the rust is removed from these areas.
How to remove rust stains on vinyl siding.
Apply the cleaning paste to the sponge or rag and apply it in a small inconspicuous area first to make sure it s safe.
Don t use a metal brush on vinyl siding but make sure it has fairly stiff bristles.
Just make a paste with the bar keeper s friend there may be other brands but this is the one i use and scrub the area with the rust stain.
Mix a solution of 1 tbsp.
I spray the deposits with lime away and the deposits will dissolve within 1 or 2 days.
Before attempting to remove stains it is best to clean the area with a general cleaner.
Bleach is a surface tension inhibitor lubricant.
To remove rust stains on vinyl siding begin by thoroughly wetting a clean sponge or rag.
Spray the rust stains with a steady stream of water from a garden hose.
Use it to gently clean rust stains from vinyl siding and work on one slat at a time to avoid leaving it on too long.
Protect yourself with rubber gloves and goggles.