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Roof Cleaning Specialists

Roof Cleaning
Blanchardstown

Moss removal, soft washing and biocide treatment across Blanchardstown. 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

Peak Roofing and Building carries out professional roof cleaning and moss removal throughout Blanchardstown. Over time, moss, lichen and algae growth on tiles and slates retains moisture against the roof surface, accelerating deterioration of the bedding mortar and eventually the tiles themselves. Our roof cleaning process uses low-pressure soft washing combined with a long-life biocide treatment — a far safer and more effective method than high-pressure jet washing, which can crack and dislodge tiles and wash away the mortar bedding protecting your ridge line. A properly cleaned and treated roof in Blanchardstown stays clean for significantly longer and reduces the risk of tile damage caused by frost acting on moisture retained in moss growth.

Moss and algae growth is particularly prevalent on roofs in Blanchardstown that have significant tree coverage or north-facing slopes that receive less direct sun. Properties in Blanchardstown built in the 1970s and 1980s with concrete tile roofs are especially susceptible — the rough surface of concrete tiles provides an ideal base for moss spores to establish. We carry out free roof assessments across Blanchardstown to determine the extent of growth, the condition of the tiles and ridge bedding, and the appropriate treatment approach. Where we identify underlying repair issues — cracked tiles, failed ridge bedding, blocked gutters — we will include these in the quote so the work is dealt with in a single visit.

Areas we cover in Blanchardstown: Corduff, Coolmine, Clonsilla, Hartstown, Mountview, Castlecurragh, Mulhuddart, Tyrrelstown and Blanchardstown Village

Our Roofing Services

Recent Roofing Work in Blanchardstown

Before
After
Case Study
Tile Replacement – Corduff
What we did
Replaced 55 cracked concrete tiles and repointed all ridges on 1980s semi-detached estate house
Duration1 Day
Typical Cost€500 – €800
Photos coming soon
Case Study
Extension Flat Roof – Hartstown
What we did
Replaced deteriorated felt flat roof on rear extension with new EPDM rubber membrane
Duration1 Day
Typical Cost€800 – €1,200
Photos coming soon
Case Study
Fascia & Soffit – Coolmine
What we did
Full UPVC fascia, soffit and guttering replacement on 1980s semi-detached, all new downpipes fitted
Duration1 Day
Typical Cost€1,100 – €1,600

Why Blanchardstown 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
"James and team were amazing. A stellar job re-felting the roof and fixing storm damaged soffit, downspouts and flashing. We had a bereavement in the family the day before work was to commence and to keep the disruption to a minimum James sent 2 of his teams instead of one to get the entire job done in less than 4 hours, without dropping standards one bit. The roof and everything else looks immaculate."
– D Murphy

We Provide

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

Frequently Asked Questions

Roof cleaning in Blanchardstown is priced based on roof area, pitch and the extent of moss and lichen growth. As a guide, a standard 3-bed semi-detached typically costs €400–€900 for a full soft wash and biocide treatment. We carry out free assessments across Blanchardstown and provide written quotes before any work is agreed.
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 Blanchardstown, 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 Blanchardstown 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 Blanchardstown.
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 Blanchardstown property and include it in the same written quote.
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Areas We Cover

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Need Emergency Roof Repairs?

We're available 24/7 for emergency callouts across Blanchardstown and the surrounding area. Based just 18km away in Sandyford.

085 782 8222 24/7 Emergency Line
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