Black Streaks On House Siding

We have a problem with our siding on front and back of our 2 story home.

Black streaks on house siding. It worked great and did a nice job of getting the dirt off the siding. The black tar like spots that are all over your vinyl siding are more than likely a fungus called sphaerobolus stellatus better known as artillery or shotgun fungus although it s most often found on the east coast it can grow anywhere and especially thrives in areas that have cool damp springs or rainy fall weather conditions. After borrowing a power washer we tested it on the backside of the house with no problems. This algae growth usually begins as small spots and then eventually becomes visible streaks.

I agree with you guys in that these streaks are coming from the weep holes in the siding. Black brown or gray stains on roofing products due to debris left on the roof surface such as piles of leaves and. Although these dark spots and ugly black streaks on your roof may look like dirt mildew soot or mold what they really are is algae. The simple answer is heat moisture and nutrition.

You ve never really taken a good look before but yes it s there. These are the cause. Black or other colored stains on roof surfaces may be caused by soot from chimneys both wood fired and oil fired. It basically looks like dirty water drying on the siding.

The green stuff on siding is abundant in the south. What causes black streaks on roof. 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. It is occuring on first floor only same area in front as in back.

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. I e not entire house. Shotgun fungus can shoot black spots on your house here s how to avoid the mess if you re seeing dark specks on your siding the culprit could be hiding in your mulch. Green stuff on siding.

There are streaks all over that are darker than the the rest. You re outside taking care of some yard work and you suddenly notice streaking on your roof and siding. When i am finished with a job and walking around the house looking at how clean it is with the customer i tell them as i point to the drain holes weep holes on the vinyl your siding has these drain holes in it to allow the siding to breathe from behind.