Moss, algae, and lichen growth on roofs across Finglas damage tiles, block gutters, and shorten the lifespan of your roof by years. Our soft-wash roof cleaning team in Dublin 11 restores tiles to their original colour and applies a biocide that keeps regrowth away for 12–18 months.
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Moss and lichen growth damages roof tiles and reduces your property's kerb appeal. Professional roof cleaning extends the life of your roof by years and prevents water ingress problems.
Dublin 11's humid climate plus mature tree cover near Finglas village, IKEA, and Charlestown Shopping Centre creates ideal conditions for moss, algae, and lichen. Once growth takes hold, it traps moisture against the roof surface 24/7. Concrete tiles erode. Slate edges lift. Clay tiles develop hairline cracks from freeze-thaw cycles. Within 5–7 years untreated, you're looking at replacement-grade damage.
Beyond structural damage, moss-shedding from the roof blocks gutters, downpipes, and gulleys — leading to overflow stains down your facade and damp patches inside. A single roof clean breaks the cycle. We've cleaned hundreds of roofs across Dublin 11 where the homeowner thought they'd need new tiles — turned out the underlying roof was perfectly fine, just buried under 20 years of organic growth.
Every roof clean covers: full safe access setup (scaffold tower, cherry picker, or roof access depending on pitch and height), manual scraping of thick moss buildup, low-pressure soft-wash application of professional biocide (kills moss, algae, lichen, and their spores), gutter clearance of all dislodged debris, and a final photo report documenting before/after.
Optional extras: ridge tile re-pointing for properties where mortar has cracked, replacement of slipped slates or broken tiles spotted during access, application of a long-life moss inhibitor for north-facing or shaded roofs, and downpipe flush to clear moss debris that washed off during cleaning. Bundling roof + gutter + facade clean is typically 20% cheaper than separate visits.
Pressure washing a roof is a rookie mistake — and we see the damage every week. High pressure strips the granular surface from concrete tiles (the protective layer that prevents UV damage), lifts slate edges, and forces water under the tile lap into your loft. The roof looks clean for 6 months, then erodes catastrophically.
Modern soft-wash technique uses a professional sodium hypochlorite biocide at low pressure. We apply it, walk away, and let nature do the work. Over 2–4 weeks the rain washes away dead moss and algae. The roof gradually returns to its original colour without a single high-pressure jet touching it. Every reputable roof cleaner in Dublin 11 works this way — anyone offering "pressure washing" of roofs is using the wrong technique.
Indicative pricing — final quote depends on specific requirements. No hidden fees, no surprise charges.
| Property / Job | Price |
|---|---|
| Small terraced (1-storey) | from €250 |
| Standard semi-detached (2-storey) | from €380 |
| Detached (2-storey) | from €550 |
| Large detached / dormer | from €700 |
| Bungalow / single storey | from €280 |
| With ridge tile re-pointing | +€180 |
Prices shown are starting estimates for Finglas. Get an instant exact quote in 60 seconds online.
Drone or ladder inspection of the roof condition. Photo report sent before quoting — no surprises.
Scaffold tower, cherry picker, or roof access ladder — depending on roof pitch, height, and surroundings. Always BS-rated safe.
Thick moss is manually scraped off (only on heavily-affected roofs). Light algae left for the biocide to handle.
Professional-grade sodium hypochlorite applied at low pressure across the entire roof. Kills moss, algae, lichen, and their spores.
All dislodged debris cleared from gutters. Full before/after photo report sent within 24 hours.
Finglas is home to a mix of family homes, terraced houses, and new developments. Properties near Finglas village, IKEA, and Charlestown Shopping Centre have specific needs and our local cleaners know the area inside out.
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