Roof cleaning in Skipton.
Done properly.

Pressure washing strips the protective granular surface off tiles and forces water under flashings — which in a Yorkshire winter means damp and frost damage inside the house. Skipton has a large proportion of older stone properties with traditional clay and concrete tiles that are particularly vulnerable. Clay tiles from pre-1970s construction have a surface layer that, once removed by high-pressure water, cannot be restored. Once gone, water absorption increases significantly, and in a hard frost that trapped moisture expands and cracks the tile from within. We also regularly see pointing and mortar damage after pressure washing — water forced under ridge tiles and valley lead strips at high pressure creates ingress problems that cost hundreds to repair. Manual scraping takes longer but your roof comes out of the process in better condition than it went in, not worse.

Typically 2–4 years in Skipton. The town’s elevation, prevailing westerly winds carrying moisture off the Pennines, and the prevalence of north-facing roof slopes all mean moss regrows faster here than in lower, drier parts of Yorkshire. Properties in the town centre with south-facing aspects may get closer to four years between treatments, while elevated properties on the edges of Craven — Embsay, Grassington, Hellifield — may see noticeable regrowth within two to three years. The biocide we use is a professional-grade, slow-release compound that kills existing moss spores and inhibits new germination. It works progressively over the months following application — you may see some discolouration for a few weeks as the moss dies back and weathers off naturally. A refresh biocide-only treatment is available at reduced cost if you just need retreating without a full scrape.