In Southern Ohio, the answer for most homes is every 12 to 24 months. Our humid summers and damp, freeze-thaw winters create perfect conditions for algae, mildew, and lichen to grow on siding, soffits, and gutters — especially on north-facing walls and anywhere shaded by trees.
Signs your house is overdue for a wash
- Green or black streaks running down siding
- Dark "tiger stripes" on the face of the gutters
- Vinyl siding that looks faded or "chalky"
- Spider webs and wasp nests under eaves
- Visible mildew dots on north-facing walls
What affects how fast a house gets dirty
Two homes on the same street can need very different schedules. The biggest factors:
- Tree cover and shade — shaded walls stay damp longer and grow algae faster.
- Proximity to fields or water — pollen, dust, and humidity all accelerate dirt buildup.
- Sprinkler overspray — repeated soaking grows mildew on lower siding fast.
- Roof runoff — black-streaked roofs drip algae onto the siding below.
What you get from a soft-wash house wash
A proper soft wash doesn't just rinse dirt — it uses a low-pressure detergent application that kills the algae and mildew at the source. That means your siding stays cleaner longer than it would from a high-pressure rinse. Most of our customers in Washington Court House, Dayton, Columbus, and surrounding areas notice the difference for a full year or more.
Schedule before the busy season
Spring (April–June) and pre-holiday fall (September–October) are our two busiest windows. If you want your home washed before a graduation, wedding, family photos, or holiday hosting, book several weeks ahead. Request a free quote — we'll give you a written estimate the same day.