Central Ohio homeowners often ask how frequently they should have their house soft washed. The honest answer: it depends on your specific property, but there are clear patterns based on local conditions.
Typical schedule for our area
- Most homes: Every 1–2 years
- Shaded or wooded lots: Annually or every 12–18 months
- Sunny, exposed homes: Every 2–3 years (sometimes longer)
What drives the schedule
- Shade and tree cover — less direct sun means slower drying and faster algae/moss growth.
- Orientation — north and east sides often show growth first.
- Siding material and color — some materials and lighter colors make growth more visible.
- Proximity to water or low areas — higher humidity accelerates organic growth.
- Previous maintenance — homes that have been consistently maintained usually need less aggressive work.
Signs it’s time
Don’t wait for the house to look obviously dirty. Common early indicators include:
- Black or green streaking on siding (especially north and east sides)
- Moss or algae on roof edges or in valleys
- Slippery or discolored decks and patios
- Visible mold or mildew near ground level or in shaded corners
Maintenance tips to stretch the time between washings
- Keep gutters and downspouts clear so water doesn’t overflow onto siding.
- Trim trees and shrubs to increase sunlight and airflow around the house.
- Address any grading or drainage issues that keep areas damp.
- Consider annual inspections — catching light growth early is much easier than waiting for heavy buildup.
Most of our regular clients schedule on a predictable cycle (every 12, 18, or 24 months) and are happy with the consistent appearance and the fact that each job is lighter because growth never gets out of hand.