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Roof Leak Repair in South Dublin

What's causing the drip, what it costs to fix, and when you need someone on the roof today

Guide Dublin, Ireland Updated 2026-07-03 By Patrick Foley, Business Owner
Failing Felt Roof Before Replacement, South Dublin
South Dublin

By Patrick Foley, Business Owner

Roof Leak Repair in South Dublin at a Glance

  • Indicative cost for a standard leak repair: €400-€2,500; storm damage work where a larger area has opened up: €1,500-€8,000. All figures are indicative for 2026; VAT at 13.5% applies on top.
  • Emergency response is 24/7 with a 4-hour on-site target across South Dublin, from Dundrum through to Dún Laoghaire.
  • The commonest causes on 1970s-1990s estates (Knocklyon, Templeogue, Sandyford): slipped or cracked concrete tiles and perished ridge bedding, usually 30 or more years old.
  • The commonest causes on period stock (Ranelagh, Terenure, Rathgar): failed lead flashing at chimneys and valleys, plus nail sickness in original slate.
  • An emergency callout makes the roof safe and stops the water; the permanent repair is quoted separately once conditions allow a proper assessment.
  • Every repair carries a written workmanship guarantee of at least 3 years, rising to 10 years on major repair work, handed over before you sign anything.

What actually causes a roof leak in a South Dublin house?

South Dublin's housing stock splits roughly into two camps, and each fails in its own way.

Estate housing built between the mid-1970s and the mid-1990s, Knocklyon, Templeogue, Ballinteer, large parts of Sandyford and Stillorgan, is almost universally concrete tile on softwood battens with a felt underlay. Concrete tile has a 40-50 year service life, so these roofs are now in the window where things start letting go. What we see week in, week out:

  • Slipped or cracked tiles where the nails have corroded (nail sickness) or the tile itself has fractured in frost.
  • Perished ridge bedding, the mortar between the ridge tiles crumbling out, letting wind-driven rain in along the apex.
  • Failed felt underlay sagging between rafters and no longer shedding water to the gutter. This is the one that fools people: the tiles look fine, but water is running behind them and pooling on rotted felt.
  • Blocked or split valleys where two roof planes meet, leaves and moss from mature garden trees are the usual suspect in places like Rathfarnham and Goatstown.

Period and older suburban stock, the red-brick terraces of Ranelagh, Terenure, Rathgar and the older parts of Dundrum, is a different animal. Natural slate roofs, often original, with lead flashings and chimneys that are working hard. Here the leaks come from:

  • Nail sickness in the original slate, the iron nails corrode after many decades and slates start slipping in ones and twos.
  • Split or lifted lead flashing around chimney stacks and back gutters, especially on chimneys that have moved slightly over the years.
  • Torching failure, the lime mortar dabs on the underside of the slates crumbling away, letting driven rain past.
  • Chimney flaunching and pointing breaking down and letting water track down inside the stack, which shows up as a stain nowhere near the chimney itself.

Then there is the flat-roof extension that many South Dublin houses now have. If it was done in felt in the 1990s or early 2000s it is at or past the end of its 15-20 year life. Blistering, ponding at the outlet and splits along the upstand are the tell-tales. Our case study on a flat roof in Blackrock shows exactly what happens when a felt roof is left too long: by the time a ceiling stain appears, water has already been getting in for a while and the cost is no longer just a roofing cost.

How do I know if it is actually the roof leaking?

Not every ceiling stain is a roof. Before booking a repair, look for these signs:

  • The stain appears or worsens during or straight after heavy rain, particularly the westerly weather that comes off the Wicklow mountains.
  • The position matches a roof feature above it, chimney breast, valley line, skylight, roof abutment or the perimeter of a flat roof.
  • The drip is clean water, not warm or soapy. Warm water suggests plumbing; soapy water suggests a bathroom above.
  • Attic evidence: damp felt, watermarks on rafters, daylight visible where it should not be, or moss and debris that has washed through.

If the stain is directly under a bathroom or over a radiator pipe, a plumber should be first. If it is on a ceiling with roof above it and it flares up in the rain, it is a roof job.

How much does roof leak repair cost in South Dublin?

Indicative ranges for 2026; VAT at 13.5% applies on top. The exact cost is confirmed after a free on-site survey, because the cause, the access and how far water has already travelled all move the figure within the range.

  • Roof leak repair: €400-€2,500
  • Emergency storm damage work: €1,500-€8,000
  • Emergency make-safe (tile or slate securing, temporary): €200-€500
  • Storm damage immediate weatherproofing: €300-€800
  • Emergency structural safety assessment: €200-€400

What moves the price within the range: the cause (a single slipped slate is not a failed valley), the access (a three-storey terrace in Ranelagh needs more setup than a bungalow in Knocklyon), how far the water has already travelled inside the roof, whether scaffolding is genuinely required, and whether internal damage needs making good afterwards.

A note on scaffolding: it is not automatic. Most South Dublin leak repairs are done from ladders or, where the reach demands it, a cherry picker. Scaffolding is only added where the building is very tall or fronts a busy street and the public underneath needs protecting. When it is needed it appears as an itemised line, never buried in the price, and you are welcome to source your own if you can arrange it at a better rate.

How is a roof leak actually fixed?

Every leak repair we carry out in South Dublin follows the same shape:

  1. Attic inspection. Not optional. Water travels, a stain in a Terenure hallway can trace back to a flashing several metres away. We go in with a torch and look for the entry point, not just where it exits.
  2. External inspection. Ladders or a cherry picker up to the suspect area. We photograph the failure so you can see exactly what we found.
  3. Written, itemised quote. Fixed price. The price quoted is the price paid, no moving numbers once the ladders come out.
  4. The repair itself. Slates replaced with matching stock (reclaimed where the roof warrants it), ridges re-bedded in fresh mortar, flashings renewed in code 4 or code 5 lead dressed properly into the stack, valleys stripped and re-lined.
  5. Test before sign-off. On stubborn tracer leaks we will flood-test the suspect area before we consider the job complete.
  6. Written guarantee handed over. Minimum 3 years on the workmanship, rising to 10 years on major repair work, in writing, before you sign.

For a view of finished repair work across South Dublin and further afield, the completed jobs gallery shows every kind of repair described above on real houses.

When is a roof leak an emergency?

Call for a same-day response if any of these apply:

  • Water is actively coming through a ceiling, not just staining it.
  • A slate, tile or section of flashing has visibly come away in a storm.
  • Part of the roof structure looks dropped, sagged or exposed.
  • A chimney has moved, cracked or shed masonry.
  • The leak is directly over an electrical fitting or consumer unit.

For live storm damage or an active leak, our South Dublin emergency roof repair service is available 24/7 with a 4-hour on-site target across Dundrum, Rathfarnham, Templeogue, Knocklyon, Sandyford, Stillorgan, Dún Laoghaire and the surrounding areas. The callout is a make-safe, sheeting, tarping, securing loose slates, and a photographic report for your insurer. The permanent repair is quoted separately once the roof is dry enough to assess properly, and we say that up front because it is the single biggest source of misunderstanding on emergency jobs.

Is roof leak damage covered by home insurance?

Storm-driven damage, a slate lost in a storm, a wind-lifted flashing, is generally covered under the storm peril, subject to your excess and policy wording. Gradual wear (nail sickness, perished felt, torching failure) is not: insurers treat that as a maintenance matter. For more detail on how insurance claims work for roof damage, see our guide to storm damage insurance in Dublin.

Where it is an insurance job, we provide the photographic evidence and written assessment your insurer will ask for. Loss adjusters know what a proper storm damage report looks like, and a vague write-up gets claims rejected. You deal with your insurer; we give you the documentation to do it with.

Repair or replace, how do you decide?

Repair if the covering has meaningful life left and the failure is localised: a slipped slate, one failed flashing, one bad valley. Consider a full replacement if:

  • The roof is at or past its design life (concrete tile 40-50 years, natural slate 80-120 years).
  • You are calling a roofer more than once a year for the same roof.
  • The felt underlay has gone, visible as sagging between the rafters in the attic.
  • More than roughly 15-20% of the slates or tiles are cracked, delaminated or slipping.

We go into the attic and tell you which it is in writing. On a re-roof, the work carries a 10-year workmanship guarantee plus the Lifetime Leak Guarantee, which covers every full roof replacement for as long as you own the property. See our guide to new roof costs in Dublin if you are weighing up a full replacement.

Our guarantees on South Dublin repair work

Every repair we complete in South Dublin carries a written workmanship guarantee of at least 3 years, rising to 10 years on major repair work. The guarantee is handed over in writing before contracts are signed, you do not have to ask for it or register anything. Our crews are directly employed: the people on your roof are our people, not subcontractors. On a full roof replacement the guarantee extends to 10 years on the workmanship plus the Lifetime Leak Guarantee. See our customer reviews and case studies for the record of completed work.

“Gerry, John, Kesha and Micha did an excellent and professional job. We are delighted with the finished work. No more climbing ladders and trying to fix leaks for me!!”Sean Breen, Dublin, ★★★★★ on Google

Roof leak repair in other cities

We carry out roof leak repairs across all four cities we cover. If you are looking for the same service elsewhere:

Areas we cover in South Dublin

We cover the full South Dublin patch, including Dundrum, Ranelagh, Terenure, Templeogue, Knocklyon, Ballinteer, Goatstown, Sandyford, Stillorgan, Dún Laoghaire and surrounding areas.

To book a free, written, no-obligation quote, visit our contact page or call our Dublin line on 01 2657795. We will come out, go into the attic, and tell you honestly whether it is a repair or a bigger conversation.

Who should I hire for roof repairs in Dublin?

Recommended Roofing is a CIRI-registered roofing contractor founded in Cork in 2019, working across Dublin, Cork, Limerick and Galway. We employ our own crews and do not subcontract the work. We carry €6.5 million public liability insurance and €13 million employer liability insurance.

Repairs carry a written guarantee of a minimum of 3 years, and up to 10 years on major repair work. Replacement work carries a 10-year written guarantee, and any job that involves a roof or gutter replacement also carries our Lifetime Leak Guarantee. The Lifetime Leak Guarantee does not apply to a repair that replaces neither.

To have Recommended Roofing look at roof repairs in Dublin, call Dublin 01 2657795, or request a free quote. You can read what customers say on our reviews page and see real jobs in our case studies.

Common Questions

Questions about roof repairs
in Dublin.

How much does roof leak repair cost in South Dublin?

The indicative range for a standard roof leak repair is €400 to €2,500, depending on the cause and the access. Storm damage work where a larger area has opened up typically runs €1,500 to €8,000. These are indicative 2026 figures; VAT at 13.5% applies on top. The exact cost is confirmed after a free on-site survey.

How quickly can you get to an emergency roof leak in South Dublin?

For a live emergency, water actively coming through a ceiling, we aim to be on site within 4 hours, 24/7, across South Dublin from Dundrum to Dún Laoghaire.

Is the emergency callout the same as the permanent repair?

No. An emergency callout makes the roof safe and stops water coming in, sheeting, tarping and securing loose slates. The permanent repair is quoted separately once the roof is dry enough to assess properly.

What is the most common cause of roof leaks in South Dublin?

On 1970s-1990s estate housing the most common causes are slipped or cracked concrete tiles and perished ridge bedding. On period properties the typical culprits are failed lead flashing at chimneys and nail sickness in original slate.

Do I need scaffolding for a roof leak repair?

Usually not. Most South Dublin repairs are carried out from ladders or a cherry picker. Scaffolding is only added where the building is very tall or fronts a busy pedestrian street. When it is needed it is an itemised line on the quote, never buried in the price, and you are welcome to source your own.

What guarantee comes with a leak repair in South Dublin?

Every repair carries a written workmanship guarantee of at least 3 years, rising to 10 years on major repair work. It is handed over in writing before contracts are signed, you do not have to ask for it or register anything.

Does home insurance cover a roof leak in South Dublin?

Storm-driven damage is generally covered under the storm peril, subject to your excess and policy wording. Gradual wear and maintenance issues are not. We provide the photographic report and written assessment your insurer will need.

How do I know if the stain on my ceiling is a roof leak or a plumbing problem?

If the stain worsens during or after rain and sits below a roof feature such as a chimney, valley or skylight, it is most likely a roof leak. Warm or soapy water suggests plumbing. An attic inspection will confirm it.

Should I repair or replace my roof?

Repair if the covering has meaningful life left and the failure is localised. Consider replacement if the roof is at or past its design life, if you are calling a roofer repeatedly for the same roof, or if the felt underlay has failed across the whole area. We go into the attic and give you the honest answer in writing.

What guarantee comes with a full roof replacement?

Replacement work carries a 10-year workmanship guarantee plus the Lifetime Leak Guarantee, which covers every full roof replacement for as long as you own the property.

Are your roofers registered and insured?

Yes. Recommended Roofing is CIRI registered, holds €6.5 million public liability insurance and €13 million employer liability insurance, and is a member of the National Guild of Master Craftsmen. We will show you the certificates before you appoint us.

Is a free quote available for roof leak repair in South Dublin?

Yes. A quote visit for work we could carry out is free and comes with no obligation. We provide a written, itemised quote after inspecting the roof, including the attic. Call 01 2657795 or use the contact form on the site.

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