Black Streaks On House Siding

This algae growth usually begins as small spots and then eventually becomes visible streaks.

Black streaks on house 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. See debris staining and see proximate cause of roof shingle stains. Use these simple landscaping tips to prevent this from happening. A microscopy lab examination of a sample from this surface would be needed to know for sure.

Blacks streaks on roof we will start with black streaks on roof. Black stains on vinyl or painted building exterior wall siding may also be mold as our photo shows at above right. They are layers of micro organisms. But testing is probably not justified.

If you notice lots of tiny black or dark brown spots developing on your siding above a landscaped area of your yard as seen below it is most likely artillery otherwise known as shotgun fungus. Danny one explanation for this is that a lot of times siding is pretty dirty when it gets on the house. Black brown or gray stains on roofing products due to debris left on the roof surface such as piles of leaves and organic waste from nearby trees. The black stains on the vinyl siding shown at left may be a fungus or a black agae.

If he is unable to detect mold inside your exterior wall but confirms that the dark spot is black mold the mold should be removed at once. 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. The most common type is known as gloeocapsa magma also known as blue green algae. Contractors drop in the dirt laying on the ground it gets filthy on the backside.

If black mold is suspected it should be inspected by a mold inspector who is certified. Another common thing that we found that causes dirt to come out is mud wasps or dirt daubers as we call them in the south. At first you won t see anything for a few years from the time your home or roof is new. You ve never really taken a good look before but yes it s there.

Black mold can create dark spots on the surface of siding but often mold growth is not limited to surface areas. By the growth pattern we think this is almost certainly a dark colored algae.