Roofing Costs in Ireland: What to Expect (2026)

Roof problems are one of those issues that homeowners tend to ignore until they cannot be ignored any longer. A small leak can cause thousands of euro in damage to ceilings, insulation, and timber if left unaddressed. Understanding typical roofing costs helps you plan ahead and avoid being caught off guard.

Roof Repair Costs

Minor repairs such as replacing a few slipped or cracked slates typically cost between 150 and 500 euro. Repairing flashing around chimneys, valleys, or abutments costs between 300 and 800 euro. Fixing a small leak where the source is known is usually between 200 and 600 euro.

Flat roof repairs on extensions or dormers range from 500 to 2,000 euro depending on the extent of the damage and whether the underlying membrane needs replacement.

Re-Slating and Re-Tiling

A full re-slate of a typical 3-bed semi-detached house costs between 8,000 and 14,000 euro. This includes stripping the old slates, inspecting and replacing damaged battens and felt, and laying new natural or synthetic slates.

Concrete tile roofs cost slightly less to replace at 6,000 to 10,000 euro for the same size house, as the materials are cheaper than natural slate.

Full Roof Replacement

If the timber structure needs significant work, or if you are changing the roof structure as part of an attic conversion, costs can rise to 15,000 to 30,000 euro. This includes new rafters, purlins, insulation to current building regulations, membrane, battens, and slates or tiles.

Flat Roof Replacement

Replacing a flat roof on an extension costs between 2,000 and 5,000 euro for a typical 15 to 25 square metre area. Modern options include EPDM rubber, fibreglass (GRP), or PVC single-ply membrane. Fibreglass is increasingly popular due to its durability and watertight, joint-free finish.

Getting Roofing Quotes

Roofing is one area where you should be especially careful about who you hire. Unfortunately, it attracts more than its share of poor operators. Always check that your roofer has public liability insurance, ask for recent references you can verify, be wary of anyone who knocks on your door offering roofing work, and never pay the full amount upfront. A reasonable payment structure is 20 to 30 percent deposit with the balance on completion.

Signs You Need a New Roof

Not every roof issue requires a full replacement. Knowing the difference between a repair job and a replacement saves you from both overspending and underspending.

Repair is enough when: You have a small number of slipped, cracked, or missing slates or tiles. The felt underlay is intact. Flashing around chimneys, valleys, and vent pipes needs resealing or replacing. A few localised damp patches appear after heavy rain.

Replacement is needed when: The felt underlay has degraded and is letting water through across multiple areas. Timber battens or rafters show signs of rot or woodworm. The roof is sagging or uneven when viewed from ground level. You are finding slate or tile fragments in your gutters regularly. The roof was last replaced more than 60 to 80 years ago (for natural slate) or more than 40 to 50 years ago (for concrete tiles).

A roofing contractor can inspect and advise, but if you are unsure, getting an independent opinion from a building surveyor is worth the 300 to 500 euro fee. They have no incentive to recommend unnecessary work.

Roof Insulation: Doing It at the Same Time

If you are already replacing your roof, it is the ideal time to upgrade roof insulation. The cost of insulating at the rafter level (between and over the rafters) is significantly lower when the roof covering is already stripped, because there is no need for separate scaffolding or access work.

Rafter-level insulation typically adds 3,000 to 6,000 euro to a roof replacement project. This creates a warm roof, meaning the attic space becomes usable living area rather than a cold storage space. For homes considering a loft conversion in the future, this is a particularly smart investment.

Even if you are just upgrading standard attic insulation (at ceiling level), doing it while the roofer has scaffold access saves on the separate scaffold hire fee, which typically runs 500 to 1,500 euro. Get insulation quotes alongside your roofing quotes to compare bundled pricing. SEAI grants are available for roof insulation upgrades. Check HomeEnergyGuide.ie for current grant amounts.