green mildew on siding

Green film on the north wall

The green is organic. It dies with a soft wash. Scrubbing it spreads it and can mark the paint.

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 service this belongs to is House soft washing.