Black Spots On White Siding

This article discusses common causes of stains or discoloration found on vinyl building siding.

Black spots on white siding.

Aluminum doesn t rust but there will be patches of dull white areas where the metal has oxidized. 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. It s hard to see shotgun fungus itself because it s only 2 millimeters wide. Others have said it s a fungus from mulch.

It s even easier as long as you spend time preparing and getting all of the right tools that you require to complete the project. Dirt and insect secretion stains however can adhere to vinyl siding attracting molds mildews and algae. Removing spots from vinyl siding. Insect stains and other debris can be removed by simply cleaning vinyl siding with household cleaners.

Dirt from rain splash up algae lichens mold moss or even smoke or chemical stains have different causes and different preventative measures. Some tell us it s from spiders. Step 1 evaluation. 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.

We have these small black spots that look like specks of tar all over our white vinyl siding of our house. 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. Distinguishing the type of stain found on siding is useful in deciding on the cause and thus the cure or prevention of staining. It goes all the way up to my second story windows and is even under my soffit and on my gutters.

Removing the oxidization from aluminum siding is actually pretty easy. John shows you images o. We have thousands of tiny black spots pin head size all over the siding of our house. Vinyl siding is very popular due to its durability and simple maintenance.