Flat Roof Costs in Dublin, From Repair to Full Replacement
Real 2026 guide prices for EPDM, fibreglass and felt flat roofs, repairs and full re-covers, and a plain answer on what drives the price, from a family-run Dublin roofer since 1989.
How Much Does a Flat Roof Cost in Dublin?
A flat roof cost in Dublin starts from around €300 for a patch repair and rises with the size of the roof and the covering you choose for a full re-cover. The figures below are honest guide prices to help you budget, not a fixed quote, because every flat roof is a different size, sits at a different height and hides a different deck underneath. We put the prices at the top rather than making you dig for them.
Flat Roof Repair and Re-Cover Prices in Dublin
Guide prices for the most common flat-roofing jobs, from a patch repair to a full re-cover. Repairs carry a starting figure; a full re-cover is priced on the area and the system, which the free inspection measures on the day.
| Job | Guide price |
|---|---|
| Flat-roof patch or localised leak repair | from €300 |
| Reseal or re-dress a leaking upstand or edge | from €300 |
| Storm-damage make-safe on a flat roof | from €300 |
| Full re-cover, garage or outbuilding roof | Priced on size |
| Full re-cover, single-storey extension | Priced on size |
| Full re-cover, large or full-width extension | Priced on size |
A full flat-roof replacement is priced on the ground it covers and the system it is finished in, so a small garage roof and a flat roof over a full-width extension sit a long way apart. The covering is the next big lever on the price, and felt, EPDM and fibreglass each land at their own point, which is set out in full below.
Prices are a general guide from a family-run Dublin roofer, not a fixed quote. Your written flat roof price comes after a free inspection, with no pressure to go ahead.
EPDM, Fibreglass or Felt: What Each Flat Roof System Costs
The covering you choose is the biggest single lever on a flat roof cost after the size of the roof. The three systems we fit across Dublin each sit at their own price point and last a different length of time, so the cheapest to lay is not always the cheapest to own.
Felt (Torch-On)
Typical life: Around 10 to 15 years
Relative cost: Lowest upfront
A tight budget or a small outbuilding roof where a long life is not the priority.
EPDM Rubber
Best value
Typical life: Around 25 to 30 years or more
Relative cost: Mid, best value
Most Dublin extensions and garage roofs, a single seamless sheet with the longest typical life for the money.
Fibreglass (GRP)
Typical life: Around 20 to 30 years
Relative cost: Highest
A hard-wearing, walk-on finish, a balcony or a roof terrace where a rigid surface earns its higher price.
For most Dublin extensions and garage roofs, EPDM rubber is the one we steer people toward, because a single seamless sheet gives the longest typical life for the money and there are no joins across the roof to fail. Where a budget is tight or a roof is small, felt still does a job, and where a flat roof will be walked on, fibreglass earns its higher price.
Should You Repair or Replace Your Flat Roof?
The cheapest flat roof is the one you only pay for once. Where the covering is broadly sound and the leak traces back to a single split, a lifted seam or a tired upstand, a repair from around €300 is the right call and it will hold. Catching it early keeps the price down, because water that has been getting in for months tends to soften the deck underneath and turn a small repair into a bigger one.
Where the felt has gone brittle and is cracking across the whole roof, though, a patch only buys a little time before the next leak opens up somewhere else. Once you are repairing the same roof every winter, a full re-cover usually works out cheaper over a few years and comes with a clean guarantee rather than a running battle. On the free inspection we tell you honestly which way makes better sense for your money, not whichever one costs more.
What Affects the Cost of a Flat Roof in Dublin?
A flat roof cost in Dublin varies more than most homeowners expect, because a flat roof is measured, not guessed. A small garage roof and a flat roof over a full-width extension are different jobs even before the covering is chosen. Rather than quote a number that turns out wrong, we would rather explain what moves the price, then give you a real figure after a free look. Four things drive nearly every flat-roofing price.
The Size of the Roof
A flat roof is priced first on its area, so a small garage roof is a modest job while a flat roof over a full-width kitchen extension covers far more ground and costs more to re-cover. The membrane, the insulation and the labour all scale with the square metres, which is why size is the first thing measured on the free inspection.
Access and How the Roof Is Reached
A single-storey extension roof reached from a low platform costs less than a flat roof set behind a parapet or up at first-floor level over a bay. The harder and higher the access, the more time and equipment the job takes before any covering goes down, and that feeds straight into the flat roof cost.
The Condition of the Deck Below
Once an old felt covering is stripped, the timber deck underneath can be sound or it can be soft where water has been sitting for years. Replacing rotten boards is priced honestly on the inspection where it can be seen, so the written figure already allows for what is likely underneath rather than springing a surprise mid-job.
The Covering and Insulation
Felt, EPDM and fibreglass each sit at their own price point, and a warm-roof build that adds or upgrades insulation costs more than a like-for-like re-cover. Where a flat roof is being opened up anyway, bringing the insulation up to current standards is often worth doing while the deck is exposed and the access is already paid for.
Flat Roof Costs Across Dublin
We give free inspections and written quotes on flat roofs right across the county, and the flat roof costs we see reflect the way Dublin is built. The single-storey kitchen and living-room extensions across the semis of Drumcondra, Raheny and Terenure are the flat roofs we re-cover most, usually where a felt covering from the 1990s has finally given up. Out in the estates of Tallaght, Lucan and Blanchardstown, garage and utility-room roofs of a similar age tend to go the same way, so re-covers there are common and affordable.
Closer to the coast in Clontarf, Malahide and Howth, exposed wind and salt air are hard on flat-roof upstands and edge trims, which shows up in more detail repairs. On the apartment blocks and mews conversions around the city centre, larger flat and low-pitch roofs behind parapets are a bigger, higher-access job again. Wherever you are, the promise on price is the same: a free inspection, an honest steer on whether a repair or a full re-cover makes more sense, and a clear written figure. You can check your own roof first with our free flat roof checker, read more on flat roof repairs in Dublin, or compare it against the wider roofing costs in Dublin before you budget. When you are ready, an honest flat roof cost in Dublin is one free inspection away.
What a Flat Roof Price Includes
A flat roof cost is only useful when you know what sits behind it. A fair re-cover price should already cover stripping and disposing of the old covering, checking and repairing the timber deck underneath, upgrading the insulation where the build allows, the new membrane laid and bonded, every upstand and edge dressed and trimmed, the outlets and drainage sorted so water runs off cleanly, and the guarantee on the finished work. When a quote leaves any of that out, the headline figure looks cheaper than it really is.
The same holds for a repair. A price to fix a flat-roof leak should include finding the actual cause, not just sealing the nearest wet patch, because a guessed repair that fails means paying twice. When you compare flat-roofing quotes in Dublin, line them up on the same scope, the same covering and the same guarantee before you look at the number, since the lowest figure is rarely the best value once you see what has been left off. Most flat-roofing work in Ireland carries VAT at the reduced 13.5% rate, and a proper written quote shows the full price with nothing added on later.
Flat Roof Cost Questions, Answered
How much does a flat roof cost in Dublin?
How much does it cost to replace a flat roof?
Is EPDM cheaper than felt or fibreglass?
How long does a flat roof last?
Is it cheaper to repair or replace a flat roof?
How much does it cost to redo a garage roof?
Last updated: July 2026. Guide prices are reviewed as our own costs change.
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What Dublin Homeowners and Businesses Say
We have never asked anyone for a review, and we have never taken one down. Our perfect 5.0 rating from 41 Google reviews is simply what people wrote once the job was finished, tidied and paid for.
“I had water dripping right over the front door. They repaired the gutter joint within 20 minutes and didn’t try to upsell anything. Very honest service.”
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“Our old fascia and soffits were literally falling apart. The team replaced everything over two days and cleaned up the mess before leaving. The house looks fresher than it has in years.”
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“I was dealing with a damp patch spreading around the chimney breast. They found the cause immediately and resealed everything properly. Haven’t seen a single leak since.”
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