The stains come from a weird clear looking fungus that grows on mulch.
How to remove mulch stains from vinyl siding.
Scrub the wood stain from the vinyl siding with a soft sponge.
I peeled back a corner piece yesterday and peeked inside.
Peroxide hydrogen peroxide has also been said to work especially at higher strengths.
The vinyl siding institute yes there really is such an organization offers some helpful and specific tips for dealing with stubborn moldy spots on your siding.
Use ammonia cleaners or a solution of one part bleach in four parts water to clean mold and mildew stains.
The artillery fungus grows in wet times of the year on mulch and looks kinda like clear water and whitish strings.
Vinyl looks to be in okay shape i just prefer wood.
Could see the old clapboard of some sort along with some plain styrofoam and tin foil like insulation.
Plant a low maintenance groundcover in the area instead of using mulch.
Mix 3 4 cup of oxalic acid granules and 1 gallon of hot water.
This will buy you a year before the fungus reaches to the top of the new mulch.
At the end of the string is a piece of something that looks like black peppers.
Use big pieces of pine bark or other bark mulch which are a less hospitable place for the fungus.
Add a fresh layer of mulch.
The best way to get rid of the stains is to prevent them.
Replace wood mulch with landscape fabric and small stones.
Don t use paint thinner nail polish remover spot removers paint remover straight chlorine bleach or furniture cleaner on vinyl.
Just mix the powder with a little water and use a soft brush then rinse.
Apply it allow it to bubble and then brush it off with a wet scrub brush or sponge.
Mouthwash mouthwash is something many swear by for cleaning artillery fungus off of vinyl siding especially mint laced varieties.
I just bought a 1940 house that had vinyl siding installed about 20 25 years ago.
Apply the mixture to the stain and let it set for 5 minutes.
The product can be bought a local wal mart.
And so i want to remove the vinyl.
If you have mud stains on vinyl siding try cleaning it with bar keepers friend.