Soft washing in Vanderbilt Beach.

Vanderbilt Beach sits in the spray. Homes along Gulf Shore Drive and the canal streets through the Conners take salt onto the walls the same way they take it onto the glass, and that salt film is hygroscopic — it holds moisture against the stucco, which is exactly the condition mold needs. So the exterior here is not a salt problem or an algae problem; it is salt creating the damp that grows the algae.

Our soft washing breaks that cycle rather than treating half of it. The cleaning solution kills the organic growth at the root while the low-pressure rinse carries the salt film off with it, so the wall dries properly again instead of staying permanently damp under a layer it cannot shed. Soffits, fascia, and the screen enclosures on the canal homes get the same treatment.

High pressure is not an option this close to the water — the stucco on beach-exposed homes is already working hard, and forcing water behind it is how you turn a cosmetic problem into a structural one. Where the same salt has bonded to the glass, hard-water stain removal is the matching job. More on the area in Vanderbilt Beach.