By Patrick Foley, Business Owner
Re-Roofing a 1970s Semi in Caherdavin or Raheen at a Glance
- A full strip and re-cover on a standard 1970s semi in Caherdavin or Raheen typically costs €9,500-€15,500, depending on roof size, tile reuse, chimney count and access.
- The battens, bitumen sarking felt and lead flashings on 1970s stock are the parts most likely to have failed, not the concrete tiles themselves.
- Shannon-estuary wind exposure means the westerly slope of most Caherdavin and Raheen roofs needs full mechanical tile fixing, not just the traditional every-fifth-course approach.
- Replacing the old bitumen felt with a breathable membrane costs a little more but suits the retrofitted insulation in almost every 1970s Limerick attic.
- SEAI does not grant-aid re-roofing, but attic insulation brought up to 300 mm during the same works is eligible under the Better Energy Homes scheme.
- Any job involving a roof replacement carries our 10-year workmanship guarantee and the Lifetime Leak Guarantee.
That is the short version. The longer version, the one that matters when you are standing in your driveway looking up at a 50-year-old roof, has more moving parts. This guide walks through what is specific to the 1970s housing stock in Caherdavin, Raheen and Dooradoyle, why the westerly aspect off the Shannon changes the specification, and where homeowners routinely overspend or underspec.
Why 1970s Limerick Semis Are Reaching End of Life Now
The concrete interlocking tile became the default roof covering across Irish estates built between about 1968 and 1982. Estates in Caherdavin, Dooradoyle and Raheen were roofed almost exclusively with Redland Delta, Sandtoft Double Roman, or the Marley Ludlow, all concrete, all nailed to softwood battens over Type 1F bitumen sarking felt.
The tiles themselves carry a manufacturer-stated life of 60 years or more. The problem is not the tile. It is everything underneath it.
- Battens: 1970s battens were rarely graded and often only small-section untreated softwood. In a Limerick attic that has seen 50 winters of humidity swings, many are now spongy at the nail line.
- Sarking felt: Type 1F bitumen felt was specified to last 25-30 years. Yours is roughly double that. In most Caherdavin and Raheen attics we have inspected, the felt has cracked at the eaves, sagged between rafters, and torn along the ridge line.
- Nail fatigue: The galvanised nails holding tiles to battens corrode from the inside out. This is the concrete-tile equivalent of nail sickness, and it is why loose tiles blow off in the first serious westerly gale rather than gradually over years.
- Lead flashings: Original light-gauge lead around chimneys and abutments oxidises, splits along fold lines, and lets water track down the party wall.
If your roof was installed between 1972 and 1978 and has never been touched, you are most likely looking at a full re-cover rather than repairs.
The Shannon Westerly: Why Wind Uplift Changes the Specification
Here is where Caherdavin and Raheen diverge from a comparable 1970s semi in a more sheltered part of Limerick. The prevailing wind comes off the Shannon estuary from the west-southwest, and the open aspect across the river and the Coonagh flats means gusts hit the western gables of Caherdavin and the westerly-facing terraces of Raheen and Dooradoyle with almost no upwind shelter.
In practice that means four things for how your roof should be specified.
- Every tile on the westerly slope should be mechanically fixed, not the traditional nail-every-fifth-course approach. Clip-and-nail on every tile.
- Ridge tiles must be dry-fixed with a mechanical ridge system. Mortar-bedded ridges are no longer considered suitable for exposed sites and are the source of many of the call-outs we attend in Limerick after a westerly storm.
- Verge tiles need dry-verge systems, the mortar verges on original 1970s roofs are almost universally cracked and letting driving rain into the gable cavity.
- Eaves closures should be rigid rather than compressible foam, to resist wind-driven rain reversal.
A roofer quoting your Caherdavin semi at the same rate as a sheltered mid-terrace elsewhere is either underspecifying or planning to skip these details. Ask specifically what the fixing schedule is on the westerly slope.
Felt vs Breathable Membrane: The One Upgrade That Pays Back
The single biggest specification decision you will make is what replaces the old bitumen sarking felt.
Type 1F bitumen felt (like-for-like replacement) is impermeable and requires a properly ventilated cold-roof design with soffit and ridge vents. It is cheaper in material cost, proven in performance, but traps moisture if attic ventilation is not right, and in 1970s semis with retrofit insulation piled to the eaves, ventilation is rarely right.
Breathable membrane (products such as Klober Permo, Tyvek Supro, or Cromar Vent 3) is vapour-permeable. It allows moisture in the roof void to escape upward through the membrane while still shedding rain from outside. It works with less-than-ideal ventilation, which describes almost every retrofitted 1970s Limerick attic we survey.
The condensation problems that show up as apparent roof leaks in older Limerick roofs are very often interstitial condensation, warm, moist air trapped against cold tile undersides by impermeable felt. A breathable membrane removes that mechanism entirely. The additional cost is reflected in the price ranges below and is worth including in any full re-cover.
What a Full Re-Roof Actually Includes
A properly specified re-cover on a Caherdavin or Raheen semi should include, at a minimum:
- Strip existing tiles, battens and felt to rafters, with rafters inspected and any rotten timbers sistered or replaced
- New treated graded battens
- Breathable underlay membrane, lapped and taped
- Tiles re-laid (or replaced with a matching Redland or Sandtoft profile if 20% or more are damaged)
- Every tile mechanically clipped on the westerly slope, alternate courses elsewhere
- New Code 4 lead flashings to chimney, abutments, and any dormer cheeks
- Dry ridge and dry verge systems
- New uPVC fascia, soffit and gutters if the originals are past saving, on 1970s stock they usually are, and we handle this as part of our fascia, soffit and guttering work
- Bagged waste removal and scaffolding
If a quote is missing dry ridge and verge, breathable membrane, or full mechanical fixing on the west slope, it is not comparable to one that includes them. Make sure every quote you receive is costed to the same specification.
Indicative Costs for a Caherdavin or Raheen Semi (2026)
For a standard 3-bed semi with a duo-pitch concrete-tile roof of roughly 80-90 m²:
| Scope | Indicative range |
|---|---|
| Strip and re-cover, existing tiles reused (breathable membrane, dry ridge and verge, full west-slope fixing) | €9,500, €12,000 |
| Full re-roof with new concrete tiles | €12,500, €15,500 |
| Add-on: new fascia, soffit and gutters (front and rear) | €1,800, €2,800 |
| Add-on: chimney rebuild above roofline | €900, €1,600 |
| Add-on: attic insulation upgrade during works | €600, €1,400 |
These are indicative ranges. Roof pitch, chimney count, tile condition and site access all move the final figure. A free on-site survey is the only way to give you a written price, call 061 535761 to arrange one.
SEAI Grants and What They Will Not Cover
SEAI does not grant-aid re-roofing itself. However, if you are re-roofing anyway, it is the ideal moment to bring attic insulation up to the current 300 mm mineral wool standard, which is grant-aided under the Better Energy Homes scheme. Coordinating the two works saves on scaffolding costs and access disruption. You can check current grant rates at seai.ie.
Choosing a Roofer in Caherdavin, Raheen and West Limerick
Three practical checks before signing anything.
- Ask to see a comparable job in the same type of estate. A roofer familiar with 1970s Limerick semis will know the rafter spacing typical of that era and the quirks of the standard house type.
- Confirm public liability insurance of at least €6.5 million. Scaffolding over a public footpath requires proper cover, and not every contractor carries it.
- Get the specification in writing. Membrane brand, batten grade, fixing schedule, flashing gauge. "New felt and tiles" is not a specification.
If you are weighing up a full replacement against targeted repairs, our team handles both. You can read more about our approach to Limerick roof repairs and when a re-cover genuinely beats patching. We also cover neighbouring areas, see our Castletroy roof repairs and Castleconnell roof repairs pages, and the full roof repairs overview for everything we offer across Limerick and the wider Munster area.
Our Guarantee
Any job that involves a roof replacement carries a 10-year workmanship guarantee and the Lifetime Leak Guarantee. Repair work carries a minimum of 3 years, up to 10 years on major repairs. The guarantee is part of every job, there is nothing to register and nothing extra to pay.
To arrange a free on-site survey and written quote for your Caherdavin or Raheen roof, call us on 061 535761 or get in touch through our contact page. We will walk the roof, check the batten and felt condition from inside the attic, and give you a clear written specification, not just a number.
Frequently asked questions
How long does re-roofing a 1970s Limerick semi take?
A standard strip-and-recover on a 3-bed semi in Caherdavin or Raheen takes roughly 4-6 working days in dry weather. Scaffolding goes up on day one, strip and dry-in (membrane and battens) happens over the following days, and tiling, flashings and dry ridge and verge occupy the balance. Weather delays are common between November and February.
Can I reuse my existing concrete tiles?
Usually yes. Redland and Sandtoft concrete tiles from the 1970s are typically sound if fewer than 15-20% are cracked, delaminated or heavily moss-pitted. Reusing them saves money and matches the streetscape in uniform estates like Caherdavin Park. Your roofer should palletise them carefully during strip-off.
Do I need planning permission to re-roof in Caherdavin or Raheen?
In most cases no. Like-for-like re-roofing is generally exempt development, provided you do not change the roof profile, pitch or materials substantially. Switching from concrete tile to natural slate on a visible elevation can sometimes trigger a planning query, check with Limerick City and County Council if in doubt.
What is the difference between re-roofing in Caherdavin versus Raheen?
The specification is essentially identical, both share the 1970s concrete-tile housing stock. The practical difference is wind exposure. Caherdavin's western terraces facing the Shannon need the full westerly wind-uplift specification, while parts of Raheen sheltered by mature planting or higher ground can sometimes carry a lighter fixing schedule on the leeward slope.
Should I replace gutters and fascia at the same time as the roof?
Almost always yes. Original 1970s gutters on Limerick semis are typically brittle, sagging or blocked after 50 years. Doing them while scaffolding is up saves on access costs later. We include fascia, soffit and gutter replacement as part of our re-roofing work where needed.
Will my house be liveable during re-roofing works?
Yes. The roof is dried in with membrane and battens well before tiling is complete, so the house stays watertight even if the weather turns. Expect noise during working hours and some dust in the attic, cover anything stored up there before works start.
Why do I need a breathable membrane rather than just replacing like for like with bitumen felt?
Most 1970s Limerick attics have been retrofitted with insulation that reduces ventilation. Bitumen felt is impermeable and can trap warm, moist air against the cold underside of the tiles, causing condensation that shows up as an apparent leak. A breathable membrane lets moisture escape upward while still shedding rain, which suits the ventilation conditions in almost every retrofitted Limerick semi.
What does full mechanical tile fixing on the westerly slope mean?
On a standard roof the convention is to nail every tile in certain courses and clip others. On an exposed westerly slope facing the Shannon, every tile is both clipped and nailed, so there is no tile on that slope that relies on gravity alone. It prevents the mass tile blow-off that happens to underspecified Limerick roofs in a serious westerly gale.
Is SEAI grant aid available for re-roofing?
No. SEAI does not grant-aid the roof structure itself. However, if you are re-roofing, it is the right time to bring attic insulation up to the current 300 mm standard, which is eligible for grant support under the Better Energy Homes scheme. Check current rates at seai.ie.
How do I compare quotes if roofers are using different specifications?
Ask each roofer to confirm in writing whether the quote includes breathable membrane, dry ridge and verge systems, full mechanical fixing on the westerly slope, Code 4 lead flashings, and bagged waste removal. A quote that omits any of these is not comparable to one that includes them, even if the headline figure looks similar.
What guarantee do I get on a full re-roof?
Any job involving a roof replacement carries a 10-year workmanship guarantee and the Lifetime Leak Guarantee. There is nothing to register, the guarantee applies automatically to every replacement job.
Do you cover areas around Caherdavin and Raheen as well?
Yes. We work across Limerick city and county, including Dooradoyle, Castletroy, Castleconnell and the wider city area, as well as all six Munster counties. Call 061 535761 to discuss your address and arrange a free survey.