1
Free Inspection
We come out, get on the roof, check the deck condition and identify the cause - not just the symptom. We will tell you honestly whether a repair will hold or whether the membrane needs replacing. No call-out fee. No obligation.
Flat Roof Repairs Dublin — Free Inspection, No Call-Out Fee
Google Guaranteed4.9★ RatedNo Call-Out Fee
A leaking flat roof rarely fixes itself, and a patch that has failed twice is telling you the membrane is done. Roof Pro Ltd carry out flat roof repairs and full replacements across South Dublin, from rear extension felt failures to full membrane replacements on garages and commercial roofs. Google Guaranteed, 4.9★ rated, using our own Weatherproof Pro PU system with a 25-year guarantee. Call Chris O'Brien on 01 687 4894 for a free inspection today.
Fully Insured
Free Inspections
Emergency Call-Outs
Guaranteed Work
Flat Roof Problems
Common Flat Roof Problems in Dublin
Most flat roofs across South Dublin were installed between the 1960s and 1980s using a basic torch-on felt system. After 15-20 years that felt dries out, becomes brittle and starts to crack. A patch holds for one winter. The second patch is telling you the membrane is done - not the patch.
Dublin's wet climate accelerates this. Water finds the smallest crack, works under the felt, and starts on the timber deck beneath. By the time a homeowner notices a ceiling stain the deck is often already compromised. The earlier a flat roof is properly assessed, the less it costs to fix.
Leaking flat roof membranes - blistering, cracking and splitting
Water ponding caused by poor drainage or membrane deflection
Failed upstand or parapet wall flashing
Leaks around roof lights, skylights and wall junctions
Rear extension flat roof leaking where it meets the main roof
Garage roof membrane failure or timber deck rot
Emergency flat roof repairs after storm damage or sudden leaks
Felt roof bubbling caused by trapped moisture under the membrane
Our Process
How We Carry Out Flat Roof Repairs and Replacements
This is what happens when you hire Roof Pro Ltd. Clear steps, written pricing and no guesswork.
2
Written Quote
Fixed price in writing before any work starts. No surprises. No extras added on the day.
3
Old System Stripped Back
We strip the old membrane completely. No laying over the top of failed felt - it needs to come off so the deck can be properly checked underneath.
4
Deck Inspection and Repair
Any damaged or rotten deck boards are replaced before anything goes on top. Skipping this step is why flat roofs fail again within two years. We never skip it.
5
New Membrane Installed
We install the right system for your roof - Weatherproof Pro PU, EPDM rubber or torch-on felt depending on size, substrate and budget. Every option is explained at quote stage.
6
Photo and Video Updates + Written Guarantee
You receive photo and video updates throughout the job. On completion a written workmanship guarantee is issued.
Flat Roofing Systems
Our Flat Roofing Systems — Built for Irish Weather
Most flat roof contractors fit whatever the supplier sends. We took a different approach.
Flat Roof Restoration — Extending the Life of Existing Roofs
Around 90% of our flat roof work is restoration — extending the life of existing roofs rather than replacing them unnecessarily. Whether your roof is original torch-on felt, fibreglass, EPDM rubber or an older bitumen system, we inspect it properly and tell you honestly whether it can be restored or whether a full replacement makes more sense long term.
Restoring an existing flat roof — rather than replacing it — can extend its lifespan by 15 to 25 years at a fraction of full replacement cost. We carry out flat roof restoration on all roof types across South Dublin, for both residential and commercial properties.
Systems We Install
Weatherproof Pro PU
Our own polyurethane waterproofing system, developed and refined over years of working on flat roofs across South Dublin. It bonds to felt, concrete, metal and timber, then cures to a fully seamless finish with no joins and no weak points. Suitable for flat roofs, rear extensions, balconies, garage roofs and commercial roofs. Ideal for restoration work — applies directly over sound existing substrates in many cases. Every Weatherproof Pro PU installation carries a 25-year guarantee. No other roofing contractor in Dublin offers this system.
Polyurea Coating
A fast-curing, highly durable spray-applied waterproofing system. Excellent for complex roof shapes, high-traffic surfaces and commercial applications where speed of installation and long-term performance are both required. Also used in restoration projects where a seamless, rapid-cure finish is needed over an existing substrate.
New Flat Roof Installation
We also carry out full new flat roof installations for new builds, extensions, garage roofs and commercial properties. Where restoration is not the right option — due to deck condition, structural issues or the age of the existing system — we strip back to the deck, repair or replace any damaged boarding, and install a new system with a full written guarantee.
Systems We Repair, Restore and Replace
We work on all existing flat roof systems regardless of what was originally installed. If your roof uses any of the following, we can inspect it, restore it where possible, or replace it with one of our own systems:
- Torch-on felt / modified bitumen
- Fibreglass (GRP)
- EPDM rubber membrane
- Concrete flat roofs
- Metal flat roofs
- Older bitumen and tar-based systems
- Any existing flat roof system
Pricing
How Much Does a Flat Roof Replacement Cost in Dublin?
Price depends on roof size, existing deck condition, membrane system and access. Addressing a leak early prevents timber deck replacement and usually saves significantly on cost.
Get a Free Flat Roof InspectionRear extension flat roof, approx. 15-25 sqm€1,200-€2,500
Garage flat roof, similar size€900-€1,800
Minor flat roof repairFrom €200-€400
Commercial flat roofFrom €1,500-€6,000+
All quotes are free, in writing and fixed before work starts. No extras on the day. No surprises.
Recent Project
Recent Flat Roof Restoration — Kilgobbin, Dublin 18
The homeowner had a rear extension flat roof covered in fibreglass. It was leaking — and the reason is a common one. Fibreglass expands and contracts with temperature changes, and on a flat roof that constant movement causes the material to crack and fail over time. It is not a suitable long-term system for a flat roof in the Irish climate.
We stripped the fibreglass back completely, inspected the deck underneath and carried out a full flat roof restoration using our Weatherproof Pro PU system. Two coats were applied to the full roof area including upstands and parapet detail, curing to a seamless, fully waterproof finish that moves with the structure rather than against it.
Job completed in one day. Lifespan extended by 25+ years. Written guarantee issued on completion.
This is exactly the type of job we carry out most often — restoring an existing flat roof rather than replacing the entire structure, saving the homeowner significant cost while delivering a longer-lasting result.
Why Choose Us
Why Choose Roof Pro Ltd for Flat Roof Repairs in Dublin?
Google Guaranteed - vetted and backed by Google
Weatherproof Pro PU - our own 25-year flat roof system that no other Dublin contractor offers
Chris O'Brien handles every flat roof job personally
Honest advice - repair or replace, we always tell you which makes more sense
Photo and video updates sent throughout every job
Fixed written quote before any work starts - no surprises
Written workmanship guarantee on every installation
Free inspection, no call-out fee - ever
Based in Dún Laoghaire - fast response across South Dublin
What Our Customers Say About Our Flat Roof Work
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Areas Covered
Flat Roof Repairs Across South Dublin
We carry out flat roof repairs and replacements across South Dublin including Blackrock, Dún Laoghaire, Dundrum, Foxrock, Dalkey, Stillorgan, Cabinteely, Killiney and surrounding areas. We cover flat roof repairs and replacements across South Dublin from our Dún Laoghaire base — free inspection on every job, no call-out fee.
DundrumStillorganBlackrockFoxrockDún LaoghaireCabinteelyRathfarnhamStepasideSandyfordLeopardstownDalkeyKillineyMonkstownRathminesRathgarRanelaghGoatstownChurchtownMount MerrionSallynogginGlenagearyDeansgrangeSandycoveGlasthuleKilmacudCarrickminesBallyoganKnocklyonTempleogueBallybodenTerenureHarolds CrossCrumlinKimmageMilltownDonnybrookBallsbridgeSandymountClonskeaghRoebuckTallaghtFirhouseScholarstown
FAQs
Frequently Asked Questions — Flat Roof Repairs Dublin
How do I know if my flat roof needs repairing or replacing?
If the roof has been repaired once or twice and is leaking again, or if it is over 15 years old and showing wider deterioration, replacement is usually the better investment. Roof Pro Ltd will inspect the roof properly and recommend repair if it will hold, or replacement if it will not. Call Chris on 01 687 4894 for a free inspection.
How much does a flat roof replacement cost in Dublin?
Most rear extension flat roofs cost around €1,200-€2,500, while garage roofs are often €900-€1,800. Minor repairs usually start from €200-€400, depending on access, roof condition and the system needed. All quotes are free, written and fixed before work starts.
How long does a flat roof replacement take?
Most residential flat roof replacements on rear extensions or garages are completed in one day. Larger roofs, commercial roofs or roofs with damaged decking may take longer. Roof Pro Ltd will give you a clear timeline at quote stage so you know what to expect.
Can you install a new flat roof over the existing one?
Sometimes, but only if the existing deck is in sound structural condition. We inspect the deck before making that decision because laying over a compromised deck can cause the new membrane to fail early. We will always explain the safest option before any work begins.
Do you carry out emergency flat roof repairs in Dublin?
Yes, Roof Pro Ltd carries out emergency flat roof repairs across South Dublin for urgent leaks, storm damage and sudden membrane failures. We aim to respond quickly, make the roof safe where possible and explain the longer-term repair options. Call 01 687 4894 if your flat roof is leaking now.
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View serviceRecognised & Trusted
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Call Today
Need a Flat Roof Repair in Dublin? Call Chris Today.
Whether it is a leaking rear extension, a garage roof past its lifespan or an emergency flat roof repair, Roof Pro Ltd cover all flat roofing work across South Dublin. Free inspection, no call-out fee and a 25-year guarantee on Weatherproof Pro PU installations.
Free inspection, no call-out fee, and written guarantees on completed flat roofing work.
✓ Google Guaranteed✓ 4.9★ Google Rating✓ No Call-Out Fee
