Black Stains On Vinyl Siding

Protect yourself with rubber gloves and goggles.

Black stains on vinyl siding.

Before attempting to remove stains it is best to clean the area with a general cleaner. Remove insect stains from vinyl siding with simple cleaners. Scrub the area with a scrub brush and the solution. Over time and through repeated changes in weather vinyl siding will attract and develop mold or.

If you are worried about damaging the vinyl you may use a lower pressure pump sprayer. Begin by spraying a 5 foot wide section of the siding from the ground to the top. A microscopy lab examination of a sample from this surface would be needed to know for sure. How to clean spots on vinyl siding general cleaning tips.

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. For tough spots like paint drips tar and pencil and pen marks use a nonabrasive bathtub cleaner or nylon scrub pad. Never use chlorine bleach to remove insect stains as it will seep into the ground and kill the roots of any vegetation in the area. Mix a strong solution of siding cleaner or other strong detergent and hot water.

Remember not to angle the sprayer upward to keep the solution from seeping under the siding layers. By the growth pattern we think this is almost certainly a dark colored algae. Bleach works but if the house is in a generally damp area and the siding is facing north the mold fungus will just come back. Thankfully regular maintenance of your vinyl siding is fairly straightforward and simple.

Pour the cleaning solution into a power washer. Dish washing soap can be used instead of laundry detergent. 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. But testing is probably not justified.