Flat Roofs Ireland

Flat roofs can perform extremely well in Ireland, but only when the right system is matched to the building and the details are installed properly. We provide flat roof services across Ireland for extensions, garages, dormers, apartment blocks, commercial units, and full replacement projects.

We handle flat roof leaks, membrane repairs, drainage corrections, full reroofing, and new-build installation using systems suited to Irish weather and real maintenance expectations.

What We Do

• flat roof repairs for felt, EPDM, GRP, PVC, and TPO systems
• full flat roof replacement
• new flat roof installation for extensions, garages, and commercial areas
• drainage and ponding-water corrections
• edge-detail, upstand, and flashing repairs
• rooflight and penetration detailing
• maintenance inspections and lifecycle advice

If your flat roof is actively leaking, combine this page with Emergency Roof Repairs.

Which Flat Roof System Is Best?

There is no universal best option. The right system depends on roof size, shape, traffic, budget, detailing complexity, and whether insulation upgrades are part of the job.

EPDM

A strong long-life option for many simple flat roof shapes, especially where fewer seams are an advantage.

GRP fibreglass

Popular on domestic roofs, dormers, and detail-heavy areas because it can create a seamless finish.

Torch-on felt / modified bitumen

Still a good choice for many Irish roofs, especially where a proven layered system is preferred.

PVC / TPO

More common on some commercial and larger flat roofs where heat-welded seams and reflective finishes are beneficial.

Common Flat Roof Problems

Ponding water

Standing water usually indicates fall or outlet issues rather than just a surface problem.

Splits and seam failure

Age, thermal movement, and poor installation can all lead to leaks around joints or stressed areas.

Edge-detail failure

Many flat roof leaks start at the perimeter, parapet, rooflight, or wall junction rather than in the middle of the roof.

Overlay fatigue

Repeated patch layers can trap moisture and hide deeper substrate issues, especially on older domestic extensions.

Flat Roof Costs in Ireland

Flat roof pricing depends on the system, substrate condition, insulation needs, and access.

Work type	Dublin	Cork	Galway	Rest of Ireland
Minor flat roof repair	€250-€700	€220-€650	€210-€620	€200-€580
Major membrane section repair	€700-€1,900	€650-€1,750	€620-€1,700	€580-€1,600
New domestic flat roof per m2	€55-€95	€50-€88	€48-€85	€45-€82
Premium system / complex detailing per m2	€80-€130	€75-€120	€72-€118	€68-€110

For budgeting, use the Flat Roof Calculator and Roof Problem Diagnoser.

Repair vs Replace for Flat Roofs

Repair is often the right call when:

• the leak is localized
• the membrane still has useful life left
• details are repairable without major substrate work
• drainage is broadly serviceable

Replacement is often better when:

• the roof has had multiple previous patches
• insulation and deck condition are poor
• leaks recur in different areas
• the roof is near end-of-life
• energy or drainage upgrades are needed anyway

Our Flat Roof Process

1. Survey and diagnosis - leak path, membrane condition, deck risk, and drainage performance.
2. Option planning - repair, overlay, or strip-and-replace depending on value and lifespan.
3. System recommendation - chosen for the building, not for convenience.
4. Installation or repair - careful detailing at edges, outlets, penetrations, and junctions.
5. Final check - drainage, seams, and weatherproofing reviewed before sign-off.

Domestic and Commercial Flat Roofs

We work on:

• house extensions
• garage roofs
• dormers and bay roofs
• apartment blocks
• schools and community buildings
• retail and warehouse units

For larger sites, also see Commercial Roofing.

Why Flat Roofs Fail Early

Most premature failures come back to one of four issues:

1. the wrong system was used for the roof geometry
2. falls and drainage were not designed properly
3. edge details and penetrations were weak
4. maintenance was ignored until leaks became internal damage

That is why we focus so heavily on diagnosis and detailing, not just surface patching.

Areas We Cover

We provide flat roof services across Ireland, including:

• Dublin: Roofers Dublin
• Wicklow: Roofers Wicklow
• Cork: Roofers Cork
• Galway: Roofers Galway

Helpful Resources

• Commercial Roofing for larger flat roof projects
• Why Flat Roofs Keep Leaking in Ireland for common defect patterns
• Flat Roof Repair vs Replacement Guide for decision support
• Flat vs Pitched Roofs in Ireland for wider comparisons

FAQs: Flat Roofs Ireland

What is the best flat roof material in Ireland?

EPDM, GRP, torch-on felt, and PVC/TPO can all work well. The best choice depends on the roof layout, detailing complexity, budget, and expected lifespan.

How much does a flat roof cost in Ireland?

New domestic flat roofs commonly range from about €45 to €95 per m2, with higher-end or more complex systems costing more.

Can a leaking flat roof be repaired?

Yes, many can. The key is whether the defect is localised and whether the underlying roof build-up is still in good condition.

Why does water sit on my flat roof?

Ponding usually points to drainage issues, poor falls, settlement, or blocked outlets. It should be investigated rather than ignored.

Get a Flat Roof Quote

Need a repair, replacement, or inspection-led recommendation? Call +353 89 981 9675 or request a flat roof quote.