Years of moss and grime can be lifted in a day — but how often is enough? We share what we'd recommend.
Created by jflgardens.co.uk
There's no single right answer, because patios all face different weather, shade and wear. But after pressure-washing hundreds of them across Surrey and London, a few patterns hold true — and they surprise most homeowners.
Once a year is the sweet spot for a patio that sees regular family use. If yours is sheltered or gets less footfall, every two years is usually fine. The goal is to lift the surface before grime and moss get a proper grip.
Patios under trees, against a north-facing wall, or anywhere that stays damp and shaded will green up with moss far faster. Those areas may need cleaning every six to twelve months to stay on top of it.
The pressure matters more than most people think. Held too close, a jet can scour the sand out of joints, erode the surface of softer stone and even mark paving. Getting the balance right is what separates a clean patio from a damaged one.
A fresh-pressure-treated patio can be sealed to help it stay cleaner and resist weeds and moss for longer. Resanding joints and a good sealant make the effort last far beyond the day of the clean.
From jet washing services to a full jet washing-style overhaul, the JFL Gardens team works across Surrey and London.
