If your York roof is going green, you're not alone. We're roof moss specialists — soft-wash treatment only, fully insured, and every visit starts with a free roof inspection. We cover every YO postcode across York and the wider North Yorkshire. Roofs round here see cold winters and humid summers in the Vale of York, and most of the properties we treat are built with handmade clay pantiles, Yorkshire stone slate and Welsh slate — so we tune the soft-wash mix and dwell time to whatever's on your ridge.
Most of the roofs we treat around York are built with handmade clay pantiles, Yorkshire stone slate and Welsh slate. Each tile type needs a slightly different approach — concrete tiles need a gentler biocide dwell time than slate, and pantiles need careful scraping in the lap. Here's what's included on a typical York job:
Every tile cleared by hand from a roof ladder or scaffold tower — no pressure washers, no broken tiles. The right approach for the older roofs you see across York.
Professional biocide applied at low pressure. It kills moss, algae and lichen at the root and keeps working for months — important given the cold winters and humid summers in the Vale of York.
Gutters cleared, downpipes flushed, debris bagged and taken away. Included on every York roof clean.
Photos of every slope, ridge and valley. You'll see exactly what's on your roof before we quote — no pressure.
We re-bed loose ridge tiles and flag failing pointing while we're up there. Small fixes done on the day; bigger ones quoted separately.
Optional annual top-up applied from the ground. Stretches results from "several years" to "indefinitely" with minimal cost.
The short answer: cold winters and humid summers in the Vale of York. Moss spores are airborne almost year-round, and any roof slope that stays damp for long periods will start to colonise — usually on the north-facing pitch first, then under any overhanging trees.
Around York, the combination of handmade clay pantiles, Yorkshire stone slate and Welsh slate and North Yorkshire's climate means most roofs need attention every 3-5 years if they've never been treated, and far less often once a biocide programme is in place.
Left untreated, moss holds water against the tile surface, freezes and thaws through winter, lifts the lap, and eventually pushes debris into the gutter line. That's when small problems become roof-replacement problems.
Plus every YO postcode across North Yorkshire.
After a full scrape, soft-wash and biocide treatment, most roofs in York stay visibly clear for several years. An optional annual top-up biocide stretches that further.
Never. High-pressure water strips the protective coating off concrete tiles and forces water under slate. We hand-scrape and soft-wash only — that's the only safe way to clean a roof.
Most York jobs are priced from the ground after a free roof inspection — pitch, access and tile type matter far more than property size. You'll get a written, fixed-price quote with no obligation.
Without a biocide treatment, yes — usually within 12-18 months. The biocide is what kills spores at the root and keeps the roof clear long after we leave.
Yes — we clear gutters, test downpipes and bag the debris on every York roof clean. It's included, not an upsell.