Roof moss, algae and lichen removal across Brighton and East Sussex. Brighton's coastal humidity creates faster-than-average biological growth on roof surfaces — particularly on north-facing slopes in Hanover, the Level and streets near the South Downs. Safe low-pressure soft washing with biocide treatment. No high-pressure washing. Free quotes.
Moss removal in Brighton uses low-pressure biocide treatment that clears growth without damaging tiles, typically costing £200–£600 depending on roof size. We never jet-wash older roofs. Every treatment includes a written roof condition report. NFRC registered and fully insured. Call 01273 973 996 for a free survey.
Coastal humidity and Brighton's mild climate make biological roof growth one of the most common maintenance issues we deal with.
Manual removal using specialist soft brushes, followed by biocide treatment. Safe for all tile types including clay plain tile and Welsh slate. Does not disturb tile bedding. From £150.
Targeted biocide application breaks down growth over 4–8 weeks, then rinsed with low pressure. More stubborn than moss and requires a different treatment approach. From £180.
Full roof clean using low-pressure water and specialist cleaning solution. Removes dirt, salt deposits, biological growth and staining. Safe for all roofing materials. From £250.
Post-clean application of long-life biocide preventing moss and algae regrowth for 3–5 years. Particularly important in Brighton's humid coastal climate. Included with full clean.
Moss and algae debris accumulates in valleys and gutters, causing blockages. We clear both as part of the moss removal process, ensuring drainage works correctly after treatment.
While on the roof, we provide a written condition report on tiles, flashings, ridge and valley condition. Identifies issues early, before they become expensive repairs. No extra charge.
Call now for a free, no-obligation quote. No call-out fees.
Brighton receives over 1,900 hours of sunshine per year — more than most UK cities — but its coastal position means high humidity, frequent onshore winds carrying moisture, and mild winters that never kill biological growth with frost. This creates ideal conditions for moss, algae and lichen on north and east-facing roof slopes that don't receive enough direct sun to dry out between rain events.
The problem is compounded by the urban tree canopy in Hanover, Preston Park and the Level area — falling leaves provide organic material that retains moisture. The Shoreham and Lewes areas, where river valley humidity adds to the coastal effect, see even faster growth. On a heavily affected Brighton roof, moss biomass can retain enough moisture to accelerate tile and mortar deterioration, cause blocked valleys and contribute to premature ridgeline failure.
High-pressure washing is fast but damaging — it forces water under tiles, dislodges ridge pointing, and can fracture the surface of older concrete plain tiles. We use low-pressure soft washing with professional biocide. The result is as clean, the roof is undamaged, and regrowth is prevented for 3-5 years.
"North-facing slope had been green with moss for years. Soft wash completely cleared it. Biocide treatment means it hasn't come back in two years."
"They gave me a written condition report during the moss removal. Picked up two loose ridge tiles and a failing valley — fixed same visit. Exactly the proactive check I needed."
"Previous company used high-pressure washing and cracked three tiles. These guys used soft wash — no damage, equally clean result. Won't use anyone else now."
Every job follows the same clear process — no surprises, no hidden costs, full communication throughout.
We assess moss coverage, identify any underlying tile or mortar issues that the treatment will expose, and quote for the cleaning and post-treatment.
Professional biocide solution applied at low pressure to all biological growth. Dwell time allows the biocide to penetrate and kill growth at the root.
Dead growth rinsed clear at low pressure — no mechanical stress on tiles or mortar. Valleys and gutters cleared of all shed debris during the cleaning process.
Post-treatment biocide applied to bare surfaces to prevent regrowth for 3-5 years. More durable than the pre-rinse application alone.
Every moss removal job includes a written condition report documenting tile, mortar, lead and guttering condition found during the cleaning process.
Brighton's coastal humidity means moss and biological growth accumulates on roofs significantly faster than inland equivalents. The city's housing diversity — from Regency seafront terraces to 1970s estate housing — means every moss removal treatments requires specific local knowledge.
Brighton & Hove has over 30 conservation areas including Brunswick Town, Kemp Town, Hanover and the central Victorian streets. In these areas, biocide treatment must use materials that match what is currently on the property. We advise on conservation area requirements and source matching materials for every affected job.
Brighton's Channel-facing position means salt air, coastal UV and the thermal cycling driven by sea temperature differentials all affect material performance. We specify materials appropriate to each property's specific coastal exposure — not one-size-fits-all inland specifications.
We cover all of Brighton, Hove and East Sussex. For emergency work, we aim to reach any Brighton property within 2-4 hours. For planned moss removal treatments, we typically carry out a free survey within 48-72 hours of your call and provide a written quote the same day or within 24 hours of the survey.
Moss removal on a standard 3-bed terrace typically costs £200–£500 including biocide. Full soft wash cleans from £250. Free survey and quote.
Over time, yes. Moss retains moisture against tile surfaces, accelerating frost damage and deterioration. On clay plain tiles, root systems can work into surface cracks. In Brighton's coastal climate, unchecked moss shortens tile life noticeably.
Typically 3–5 years on south-facing slopes with good sun, and 2–4 years on north-facing slopes in coastal conditions. Annual gutter clearing alongside biocide treatment keeps the whole system working.
High-pressure washing is fast but causes damage — forces water under tiles, dislodges ridge pointing, can crack older concrete plain tiles. Soft washing achieves the same clean result without mechanical stress on the roof.
Safe soft wash. Biocide treatment included. Written condition report at no extra charge.
01273 973 996