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Flat Roof Specialists

Flat Roofs
Castleknock

EPDM rubber, felt and GRP flat roofs. Repair or full replacement with up to 25-year guarantee.

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 specialises in flat roof repairs and replacement throughout Castleknock. From garage flat roofs and rear extension roofs to parapet-enclosed flat roofs on Victorian terraces, we carry out both like-for-like felt repairs and full upgrades to modern EPDM rubber membrane. EPDM roofs carry a manufacturer's 25-year product guarantee and require minimal maintenance — they are the most cost-effective upgrade available for any flat roof in Castleknock. For roofs in reasonable condition, resurfacing is often a more affordable option — from €1,500 depending on size and surface condition, most jobs completed in 1 day. Our free inspection tells you whether resurfacing or full replacement is the right fit for your Castleknock roof.

Castleknock is an affluent north-west Dublin suburb with a semi-rural feel, characterised by large detached homes on mature wooded plots, quality 1980s and 1990s executive estates, and some modern new-build developments near the Phoenix Park. Properties in Castleknock are predominantly Large detached homes on mature plots along Castleknock Road, 1980s and 1990s executive semi-detached and detached estates, quality modern new-builds, and some period properties near the old village. Common roof issues we address here include natural slate deterioration on older prestige properties, lead valley failures on complex hipped rooflines, chimney repointing on larger homes, guttering blockages from mature deciduous trees, and moss accumulation on shaded north-facing pitches, flat roof repairs and replacements are common across Castleknock extensions and outbuildings. Our roofers understand the construction methods and typical materials used in Castleknock — every inspection is free and every job begins with a written quote.

Areas we cover in Castleknock: Castleknock Road, Carpenterstown Road, Auburn Avenue, Beechfield estate, Elmpark, Laurel Lodge and Carton Wood

View all Flat Roofs areas we cover →

Our Roofing Services

Recent Roofing Work in Castleknock

Before
After
Case Study
Slate Restoration – Castleknock Road
What we did
Replaced 38 deteriorated natural slates and repointed all ridges and hips on large 1960s detached property
Duration2 Days
Typical Cost€900 – €1,200
Photos coming soon
Case Study
Lead Valley Replacement – Auburn Avenue
What we did
Replaced two failed lead valleys on complex hipped roofline of 1990s executive detached
Duration2 Days
Typical Cost€850 – €1,000
Photos coming soon
Case Study
Guttering Replacement – Laurel Lodge
What we did
Full UPVC guttering and downpipe replacement on large detached — persistently blocked by mature oak trees
Duration1 Day
Typical Cost€550 – €650

Why Castleknock 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
"Excellent work from start to finish. I had other roofers quote and all felt the plywood was still good. James was 100% correct it had to go and be replaced. I also really liked that they supplied so many photos and vids to show the quality of the work. Gave me great assurance."
– Nick Walsh

We Provide

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

Frequently Asked Questions

From €4,200 depending on roof size, access and materials chosen. Most jobs 1–2 days. Free inspection and written quote before any work begins. If your roof is in reasonable condition, ask about resurfacing — a more affordable option from €1,500, and our free inspection will tell you which is the right fit.
EPDM rubber membrane is the most durable and cost-effective flat roof system available today. It carries a manufacturer's 25-year product guarantee, requires minimal maintenance and is significantly more durable than traditional felt. GRP fibreglass is also an excellent option, particularly for roofs with complex detailing. We will recommend the right system for your specific roof after a free inspection.
Most flat roof replacements in Castleknock are completed in 1–2 days. We always confirm the expected duration in our written quote.
A free inspection is the most reliable way to assess this. In general, blistering felt, cracking, ponding water or damp patches on the ceiling below are signs that full replacement is the right solution. If the roof structure is sound and damage is localised, a repair may extend the roof's life cost-effectively. We always recommend repair over replacement where it is genuinely the right option.
Yes. We carry out patch repairs, full re-felting and EPDM rubber replacements across Castleknock. Where a flat roof can be repaired rather than replaced, we will always recommend that option — repair is typically the more cost-effective solution where the roof structure is sound.
In Castleknock, the roofing problems we see most often are natural slate deterioration on older prestige properties, lead valley failures on complex hipped rooflines, chimney repointing on larger homes, guttering blockages from mature deciduous trees, and moss accumulation on shaded north-facing pitches. 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

Blanchardstown Palmerstown Lucan Clonsilla Mulhuddart Dunboyne
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Need Emergency Roof Repairs?

We're available 24/7 for emergency callouts across Castleknock and the surrounding area. Based just 16km 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.

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