Streaks On My Siding Under Windows

It basically looks like dirty water drying on the siding.

Streaks on my siding under windows.

That in my mind might explain the oxidation but not why it shows up in streaks like this. They range from 4 5 inches to a foot wide and from a few inches to 3 feet top to bottom. There are streaks all over that are darker than the the rest. 3 windows on the lower level on the same side don t have that much visible but it is still there.

It s hard to see shotgun fungus itself because it s only 2 millimeters wide. Stains and streaks can show up easily on roofing and siding over time thanks to a whole host of nuisances including mold mildew and plain ol dirt. The same effect holds true for the vinyl trim that installs around doors and windows. It s only the shine that makes them stand out from the rest of the.

I have replaced my siding 4 years ago and this year i have started noticing stains underneath the windows on the siding. After borrowing a power washer we tested it on the backside of the house with no problems. A reader asked about black streaks appearing down the building siding and originating from tarred top tile covering of a roof parapet. When we did the same to the front of the house we noticed later in the day that it looks as if someone did graffiti all over.

Vinyl is a siding material that is preferred by many homeowners because of its low maintenance and durability but vinyl siding and trim require. Well since i am new at this and really the only one in my company with help from the girlfriend on jobs as a rinse person i got to looking at it pretty close. I ve never had vinyl siding do this and i washed this house with the same soap bleach mix that i always use. I notice there are oily streaks on my vinyl siding under all the windows on my house on all sides.

The under sill trim goes on first followed by the side trim which overlaps the open ends of the under sill trim. It worked great and did a nice job of getting the dirt off the siding. The rest of the house is vinyl brick and the vinyl didn t do this on the other three sides. How to get oxidation off of an exterior vinyl trim.

I agree with you guys in that these streaks are coming from the weep holes in the siding. Also known as artillery or cannonball fungus sphaerobolus it uses internal water pressure to forcefully fire its spores similar to seeds up to 20 feet away the fungus sets its sights on bright areas so that means it will aim for any pale surface that reflects light such as the siding on your house. The streaks are oily greasy to the touch but they are clear and shiny not discolored.