Black Substance On House Siding

A chalky white substance on your vinyl siding and trim is caused by oxidation which occurs most often during damp or wet weather.

Black substance on house siding.

Black houses will absorb more heat from the sun than white houses. This article discusses common causes of stains or discoloration found on vinyl building siding. Dirt from rain splash up algae lichens mold moss or even smoke or chemical stains have different causes and different preventative measures. 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 on the porch my windows but it is worse on the siding. The side of the house with the least sun exposure can be the worst spot. Distinguishing the type of stain found on siding is useful in deciding on the cause and thus the cure or prevention of staining. Cedar siding looks beautiful when it s fresh and new but as the years go on it may become grungy dark and neglected.

Vinyl siding stain diagnosis. Oxidation can be cleaned from most vinyl siding but the process. A white or light colored house will reflect more rays keeping indoor temperatures cooler in hot summer months.