Galway's older terraced homes and stone cottages along the Claddagh and around Eyre Square often carry natural slate roofs that have taken decades of salt-laden Atlantic wind. When lead flashing around chimneys fails, water finds its way behind the slate and into the attic space, especially during the prolonged heavy rain events common on the west coast. We use code 4 and code 5 lead or GRP fibreglass alternatives where the original detail allows, cutting and dressing the material on site to match the existing pitch and chimney abutment.
Modern estates on the Monivea Road side and in Renmore present different challenges. Their concrete or fibre-cement chimneys expand and contract differently from the surrounding roof, cracking mortar joints that then let wind-driven rain penetrate. Repointing with lime-based mortar compatible with the original build avoids the trapped moisture problems that cement-rich mixes create. We also check for missing or slipped slates around the stack, a frequent secondary repair once the flashing is opened up.
SEAI grants for roof insulation upgrades sometimes require chimney sealing work to maintain the BER rating. We flag this during the initial inspection because a poorly detailed flashing can undermine the grant claim. Homeowners in areas exposed to the prevailing south-westerlies notice the difference first; the same detail that lasts fifteen years inland can fail in seven or eight years here once the lead starts to fatigue from constant flexing.
Technician insight
In Galway the thing that catches most people out with chimney repairs is the salt air eating the lead from underneath on roofs that face the prevailing wind. You can have a chimney that looks fine from the road but the lead has already crystallised along the step where it meets the slate, especially on the older houses between the Claddagh and Newcastle Road.
Terraced house near Eyre Square
Persistent damp patches appeared on the bedroom ceiling after a week of Atlantic storms. We found the lead soakers had split along the chimney on the south-west corner. The stack was repointed with lime mortar and new code 5 lead was stepped in to match the existing slate. The ceiling dried out and no further water tracked down the flue.
Chimney Repairs & Lead Flashing Services We Offer
✓Lead Flashing Replacement
Remove failed lead and install new code 4 or 5 lead stepped flashing dressed to the slate and chimney, sealed with lead sealant rated for coastal exposure.
✓Chimney Stack Repointing
Cut out deteriorated mortar and repoint with lime-based mix matched to the original masonry, preventing water entry while allowing the stack to breathe.
✓GRP Fibreglass Flashing Installation
Apply a reinforced GRP system over the chimney abutment where lead is unsuitable, forming a seamless, flexible seal that handles wind movement on exposed Galway roofs.
✓Chimney Pot and Crown Repairs
Rebed loose pots, repair cracked crowns and fit new lead aprons to stop rainwater tracking down the flue in older Galway properties.
✓Slate Roof Integration Around Chimneys
Replace damaged or slipped slates adjacent to the stack and ensure proper soakers and cover flashings are reinstated to maintain the roof's weather line.
Chimney Repairs & Lead Flashing Cost in Galway, County Galway
| Service | Typical Range | What Affects It |
|---|---|---|
| Single chimney lead flashing replacement | €450–€750 | Price rises with difficult access or listed-building constraints |
| Chimney stack repointing only | €350–€600 | Depends on height and extent of mortar failure |
| GRP flashing installation | €550–€900 | Used where lead is not suitable; includes slate make-good |
| Full chimney and surrounding slate repair | €900–€1,800 | Covers multiple slipped slates and two-stage flashing |
Ranges are typical for Galway, County Galway and confirmed with an exact written quote before any work starts.
How it works
- 1
Site Inspection
We examine the chimney from roof level and inside the attic, noting slate condition, lead fatigue and any signs of previous repairs common in Galway's older stock.
- 2
Material Selection
We choose lead gauge or GRP based on roof pitch, exposure and whether the building is listed or in a conservation area around the city centre.
- 3
Repair Execution
Old material is removed, the stack is prepared, new flashing is cut and dressed on site, and surrounding slates are made good before final sealing.
- 4
Final Check and Clean
We test the detail during the next rain if possible, clear all debris from gutters and leave the roof watertight before leaving site.
Pricing
Most chimney and flashing jobs in Galway fall between €450 and €1,800 depending on access, number of stacks and whether slate repairs are needed.