Roof moss treatment in Eastbourne costs £350–£900 depending on property size and position. We use soft-wash biocide only — never pressure washing, which damages tiles. Treatment includes a preventative top-coat and written condition report. Free surveys across East Sussex — call 01323 365960.
Eastbourne's coastal climate creates ideal conditions for moss, lichen and algae growth on roof tiles. Persistent moisture from sea air, the lack of hard frost that would naturally kill moss inland, and the sheltered aspects of many Eastbourne properties mean that roof moss here grows faster and more extensively than on equivalent properties 20 miles inland. On north-facing slopes and properties under tree canopy — common in Meads, Old Town, and the wooded approaches to the Downs — moss coverage can become significant within 5–7 years of a new roof.
Moss is not just cosmetic. It retains moisture against tile and mortar surfaces, accelerating freeze-thaw damage to mortar joints and tile faces. It works under tile laps and into valleys. On concrete tiles, established moss can physically dislodge the tile surface coating. Left untreated, it shortens roof life significantly.
Our Roof Cleaning Process
We do not pressure-wash roofs. High-pressure washing damages tile surfaces, blasts mortar from joints, and forces water under tiles. It leaves your roof looking clean for 6 months before moss returns faster than before. Our process is soft-wash biocide treatment: a professional-grade algaecide applied at low pressure that kills moss, lichen and algae at the root. Dead material then weathers off naturally over 3–6 months, or we return to brush clear. We follow with a preventative biocide application that inhibits regrowth for 3–5 years.
What’s Included in a Full Treatment
- Full roof inspection from access equipment — condition report provided
- Soft-wash biocide application to all roof surfaces
- Manual moss scraping on heavily affected areas
- Re-point of any failed ridge, hip or verge mortar identified during inspection
- Preventative biocide top-coat for extended protection
- Valley and gutter clear-down