Most homes benefit from a full exterior wash once a year — but the right frequency depends on your home's location, sun exposure, and surrounding landscaping.
Homes in shaded areas or near mature trees tend to accumulate mold and algae faster, and may need cleaning every 6–9 months.
South- and west-facing walls that get more direct sun typically stay cleaner longer, while north-facing walls in the shade are prone to green and black staining.
A good rule of thumb for Colorado homeowners: schedule your wash in late spring, after pollen season, to remove the seasonal buildup before summer entertaining begins.
