Black Streaks On House Siding

These are the cause.

Black streaks on house siding. It is occuring on first floor only same area in front as in back. 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. You ve never really taken a good look before but yes it s there. There are streaks all over that are darker than the the rest.

Green stuff on siding. I e not entire house. The growth on your roof thrives in a warm moist and dirty environment and in some cases it feeds on the materials on your home find out more about roofing materials. The most common type is known as gloeocapsa magma also known as blue green algae.

It worked great and did a nice job of getting the dirt off the siding. 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. Black brown or gray stains on roofing products due to debris left on the roof surface such as piles of leaves and. After borrowing a power washer we tested it on the backside of the house with no problems.

The simple answer is heat moisture and nutrition. We have a problem with our siding on front and back of our 2 story home. 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. This algae growth usually begins as small spots and then eventually becomes visible streaks.

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. What causes black streaks on roof. The green stuff on siding is abundant in the south. 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.

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. I agree with you guys in that these streaks are coming from the weep holes in the siding. It basically looks like dirty water drying on the siding.