Brown Stains On House Siding

Brown stains on side of house tips below.

Brown stains on house siding.

Given that this one had mushrooms growing out from between the siding planks i told them to remove the siding in this area. Most often the root cause is wind blown rain condensation or frost accumulation behind siding that was not installed over a modern housewrap water barraier. That might have been part of the problem. Black or other colored stains on roof surfaces may be caused by soot from chimneys both wood fired and oil fired.

Artillery fungus is difficult to get rid of because of its sticky properties. Cedar has natural preservative chemicals that dissolve in water. This may be where it s stemming from in your yard as you mention that the fungus seems to be limited to growing on the siding closest to your mulch beds. Brown staining on siding looks like it s leaking down the fascia behind the gutter and following the bottom of gutter and accumulating in the front before it builds up and drops.

This fungus can grow on multiple surfaces including wood siding fences decks and cars. Brown syrup like stains streaking down the siding on the exterior wall of the bathroom. Stains originate just above metal z flashing. Weather conditions before stain appeared are critical.

No clue about the rest of the house. Otherwise the situation is exactly like what i see on 50s houses.