Today I was out looking at a prospective pressure washing job that had small little black dots all over the vinyl siding. Those small little dots are called artillery fungus (Sphaerobolus spp) that lives on decaying wood, or your problem is more than likely that its living in your mulch bed that is around your foundation. What they are is a little fungus that shoots its spores out like a shotgun. This shotgun fungus can easily shoot its spores 20 feet in the air and tends to shoot it towards the light or a bright colored surface like your nice white siding.
So what can you do to remove it? Well… Unfortunately, pressure washing doesn’t really cut it. When it attaches to your siding it forms a hard “crust” which is pretty hard in itself to remove. You can sort of scrape it off but underneath it leaves what can compared to as a brown ink spot. Some say that the ïnk Spot”can be removed with an ink eraser. That would be a daunting task as there are could be hundreds. The downside to that method, pressure washing or any other method is that your siding has a chalky oxidation on it which is removed when attempting to clean, coincidentally leaving streaks and smudges.
How do you prevent it? Ok, now that you know that it feeds on your mulch and decaying wood… Get rid of it! You can replace it with stone, rubber mulch that is made from recycled tires (actually looks kinda like regular mulch), or other inorganic substrate. If inorganic substrate doesn’t work for you then you could try removing the old mulch every year and replacing it with some fresh mulch
Wagner Window Service
Did a fantastic job. Going to have them back every year.
Tim and his crew are second to none , aside from the fantastic customer service and superior quality work. The entire team shows a tremendous amount of character, and ethics , something you do not see in this day and age very often. As a small business owner I am proud to recommend Tim and his crew for any job. They came to my shop and did all the windows, and no word of a lie , they were so clean it looked like they took the glass out.they also cleaned all the window sills, and trim, awesome job!!!!! Thanks Guys !!!!!!