If your Plymouth 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 PL postcode across Plymouth and the wider Devon. Roofs round here see wet, salty south-coast weather perfect for moss and algae, and most of the properties we treat are built with Delabole slate, Bridgwater pantiles and concrete interlocking tiles — so we tune the soft-wash mix and dwell time to whatever's on your ridge.
Most of the roofs we treat around Plymouth are built with Delabole slate, Bridgwater pantiles and concrete interlocking tiles. 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 Plymouth 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 Plymouth.
Professional biocide applied at low pressure. It kills moss, algae and lichen at the root and keeps working for months — important given the wet, salty south-coast weather perfect for moss and algae.
Gutters cleared, downpipes flushed, debris bagged and taken away. Included on every Plymouth 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: wet, salty south-coast weather perfect for moss and algae. 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 Plymouth, the combination of Delabole slate, Bridgwater pantiles and concrete interlocking tiles and Devon'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 PL postcode across Devon.
Yes. We clean carefully around PV panels and mounting brackets and avoid running biocide over the cells.
Yes, as long as it's dry and safe to access. Autumn and winter are actually peak season for treating moss — the biocide goes on before spring growth kicks off.
Yes — we clear gutters, test downpipes and bag the debris on every Plymouth roof clean. It's included, not an upsell.
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.
No — all the work is carried out outside. Just tell us about parking, side-gate access, pets and any solar panels before we arrive.