Black Spots On White Siding

Mold and mildew can stain your siding cause wood to rot and impact allergies or make occupants sick.

Black spots on white siding.

In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding. 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. These spots are often caused by spiders especially true when you re near water.

This will prevent water from seeping behind the siding and causing damage to the wood sheathing behind it. 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. Aluminum doesn t rust however it can take on a slightly dull and white appearance. In nature the artillery fungus shoots its spores towards sunlight.

Set the nozzle on a medium misting spray and then point the nozzle down when spraying the siding. Are those spots alive. The first thing that you will need to do is take a look at the problem you are suffering from. Bet your boat will have spots too if you have one.

Rinse the siding with a garden hose equipped with a nozzle. Removing spots from vinyl siding. But testing is probably not justified. 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.

Whether it s lighter white or tan or darker black spots you should take immediate action to clean these damaging fungi from your home. The black stains on the vinyl siding shown at left may be a fungus or a black agae. And of course the black spots show up better on white surfaces so they are noticed more easily. Mildew or even worse mold may be the culprit.

Aluminum oxidation is a major problem but there are different degrees of oxidation that can need different treatments. By the growth pattern we think this is almost certainly a dark colored algae. Artillery fungus is a wood dwelling fungus commonly found in mulch.