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Roof Cleaning Specialists

Roof Cleaning
Dún Laoghaire

Moss removal, soft washing and biocide treatment across Dún Laoghaire. Extends roof life and restores appearance.

Free Roof
Inspection
No Call-Out
Charge
Fully
Insured
Emergency
Repairs
25+ Years
Experience
Fully InsuredPublic & Employer
SafePassCertified Team
24/7Emergency Line
★★★★★ 5 Star Reviews on Google

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25+Years Experience
1,000+Roofs Repaired
5 ★5 Star Reviews
100%Customer Satisfaction
LocalRoofers You Can Trust

Dún Laoghaire homeowners trust Peak Roofing for roof cleaning. Moss, lichen and algae growth on tiles and slates traps moisture against the roof surface, accelerating mortar erosion and eventually the tiles themselves. Our roof cleaning specialists use low-pressure soft washing combined with a professional biocide treatment throughout Dún Laoghaire — far safer and more effective than high-pressure jet washing, which cracks tiles, displaces ridge mortar and forces water under the overlap. A professionally cleaned and biocide-treated roof in Dún Laoghaire stays clear for significantly longer and reduces the frost damage risk that comes with moisture trapped in moss growth. Free assessment, written quote, no call-out charge.

Dún Laoghaire is a historic coastal town with housing stock ranging from Victorian and Edwardian terraces near the harbour to 1960s semi-detached estates inland. Properties in Dún Laoghaire are predominantly Victorian terraces, Edwardian semi-detached homes, 1960s semi-detached estates and modern seafront apartments. Common roof issues we address here include accelerated slate and mortar deterioration from coastal salt air, storm-driven rain penetration on exposed seafront properties, cracked chimney stacks on Victorian terraces, and flat roof failures on rear extensions, making professional roofing maintenance essential for Dún Laoghaire properties. Our roofers understand the construction methods and typical materials used in Dún Laoghaire — every inspection is free and every job begins with a written quote.

Areas we cover in Dún Laoghaire: Glenageary Road, Corrig Avenue, Tivoli Road, Upper Glenageary Road, Clarence Street and Myrtle Square

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Our Roofing Services

Recent Roofing Work in Dún Laoghaire

Before
After
Case Study
Slate Roof Repair – Corrig Avenue
What we did
Replaced 30 salt-eroded slates and repointed all hips and ridges on Victorian terrace
Duration1 Day
Typical Cost€700 – €1,100
Photos coming soon
Case Study
Chimney Repair – Tivoli Road
What we did
Rebuilt top section of chimney stack, new lead flashing, DPC and stainless cowl on Edwardian semi
Duration2 Days
Typical Cost€1,100 – €1,300
Photos coming soon
Case Study
Flat Roof Replacement – Glenageary Road
What we did
Replaced deteriorated felt roof with new fibreglass GRP system on rear kitchen extension
Duration1 Day
Typical Cost€4,500 – €6,500

Why Dún Laoghaire Homeowners
Choose Peak Roofing

  • Local, family run roofing company
  • Honest advice — no unnecessary replacements
  • Detailed roof inspection reports with photos
  • High quality materials & expert workmanship
  • Clean, tidy & respectful on every job
  • Fully insured for your peace of mind
  • Up to 25-year guarantee available
5 Star Reviews
"Had James and his team replace a very poorly laid roof on my newly built garden shed. They did a wonderful job! Attention to detail was second to none. They were helpful and professional and didn't leave a mess."
– Bren Burke

We Provide

  • Free Quotes
  • No Call-Out Charge
  • Written Quotations
  • Work Guaranteed
  • Emergency Callouts

Frequently Asked Questions

From €700 — most properties completed in half a day. Free inspection first, so you know exactly what's involved before agreeing to anything.
Soft washing is the correct method. High-pressure jet washing can crack and dislodge tiles, wash away ridge mortar bedding, and force water under the tile overlap — causing internal damp that may not appear for months. Our soft washing process uses low pressure combined with a professional biocide solution that kills moss, lichen and algae at the root, leaving a clean roof that stays clean for 3–5 years after treatment.
Yes. Moss retains water against the tile surface and mortar joints, accelerating frost damage, mortar erosion and tile cracking. Removing moss and applying a biocide treatment removes that moisture trap and significantly slows future deterioration. For concrete tile roofs in Dún Laoghaire, regular cleaning every 4–6 years is a cost-effective maintenance strategy that delays the need for full roof replacement.
A standard semi-detached roof in Dún Laoghaire typically takes half a day to a full day depending on pitch, size and the extent of moss growth. Treatment solution is applied after cleaning and continues to work for several months after the visit. There is no need for you to vacate the property and access is via roof ladder — we do not require scaffolding for most residential jobs in Dún Laoghaire.
Yes. We frequently combine roof cleaning with repair work — replacing cracked or broken tiles, repointing ridge sections, clearing gutters and downpipes — on the same visit. This is the most cost-effective approach and avoids a second attendance fee. We will identify any repair work needed during our free assessment of your Dún Laoghaire property and include it in the same written quote.
In Dún Laoghaire, the roofing problems we see most often are accelerated slate and mortar deterioration from coastal salt air, storm-driven rain penetration on exposed seafront properties, cracked chimney stacks on Victorian terraces, and flat roof failures on rear extensions. A free inspection is the best way to check whether any of these apply to your roof — call 085 782 8222 to arrange one.
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Areas We Cover

Monkstown Blackrock Glasthule Sandycove Glenageary Dalkey
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Need Emergency Roof Repairs?

We're available 24/7 for emergency callouts across Dún Laoghaire and the surrounding area. Based just 6km away in Sandyford.

085 782 8222 24/7 Emergency Line
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Get a Bird's-Eye View of Your Roof

Our drone surveys deliver high-resolution footage of every tile, ridge and chimney — no scaffold, no ladders, no disruption. Ideal for insurance claims, pre-purchase inspections and hard-to-access roof sections.

Book a Drone Survey  →
Book Your Free Roof Cleaning Assessment Today Get a free roof inspection and honest advice from your local roofing experts.