green mildew on siding · Columbus, GA

green mildew on siding in Columbus

In Columbus, this comes up on historic-district houses, mid-rise buildings, hotels, and industrial sites. Uptown brick holds a green film. Industrial eaves go black. Drives in the older blocks are stained through. A wall behind big shrubs, or a wall that never dries, will be the first to green up again. Trimming is not our job. Naming it is.

Venues, churches, and high gutters stay on the calendar when house washing slows.

Green on vinyl, painted brick, stucco, and the shady side of a fence is mildew and algae feeding on moisture and whatever dust has landed. It is the most straightforward thing we do. Mix, dwell, rinse. The color leaves because the organism dies, not because we sanded the wall.

If you have been pressure washing it every spring, look for wand curves and fuzzed paint. That damage stays after the green is gone. We can clean what is alive. We cannot un-scar the surface. If the paint is failing, a wash will make the failure obvious, which is useful and also something you should expect.

Inside the house, a green wall is not this service. We do not treat interior mold. If you see staining that seems to be coming from behind the siding, that is a leak, and washing the outside will not fix the leak.

The full explanation, without the town attached, is the green film on the north wall article. The town does not change the chemistry. It changes the houses, the shade, and the clay.

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