Gutter Repairs Dublin — Cast Iron, uPVC & Aluminium

Gutters are easy to ignore because when they're working, they're invisible — water goes where it's supposed to and nobody thinks about it again. The problem only becomes obvious once it's already been failing quietly for a while.

By the time you can see the damage — damp patches, staining on render, moss creeping up brickwork — the gutter's usually been sending water down your wall instead of away from it for months, not days.

Mr Roofing repairs and replaces gutters and downpipes across Dublin — cast iron, uPVC, and aluminium systems, on period homes and new builds alike. Free inspection, 25-year guarantee, and we'll tell you honestly whether a repair holds or the system's genuinely due for replacement.

Blocked Gutters & Downpipes

Leaves, moss, and general debris built up to the point water's got nowhere to go. Cleared properly, checked for damage while we're up there.

Sagging & Pulling-Away Gutters

A gutter that's dropped below its proper line or pulled away from the fascia — usually a sign of what's inside it, not just the bracket.

Leaking Joints & Seals

Where gutter sections meet is the most common failure point on any system, old or new. Resealed or replaced properly, not just caulked over.

Cracked or Split Guttering

UV, frost, and age cracking the gutter itself. We repair sections where possible, replace where it's genuinely gone.

Cast Iron Gutter Repairs & Restoration

Original cast iron on period Dublin homes — repaired, repainted, and re-hung rather than automatically ripped out and replaced with uPVC.

Downpipe Repairs & Replacement

Cracked, disconnected, or misaligned downpipes sending water straight down your wall instead of into the drain where it belongs.

A full gutter is heavier than most people imagine — and that weight does the real damage.

Water alone is heavy. Water plus years of trapped leaves, moss, and silt is heavier again. A gutter carrying that load for long enough starts pulling its brackets away from the fascia board, which changes the angle the gutter sits at — and once the angle's wrong, water stops running to the downpipe and starts finding the lowest point instead, which is usually straight over the front edge, onto the wall below. This is why a gutter that's "always been a bit sketchy" tends to get suddenly, dramatically worse rather than failing gradually.

Cast iron and uPVC are not the same problem, and they don't get the same repair.

A huge amount of Dublin's older housing — Victorian and Edwardian terraces especially — still has original cast iron guttering, and it behaves very differently from the uPVC most modern gutter companies are set up to work with. Cast iron can genuinely last a century or more, but it needs repainting periodically to stop rust taking hold, and once rust does start, it eats through from the inside, meaning a section can look solid and still be a season or two from failing. Replacing period cast iron with uPVC isn't always the right call either — on a period property it can look wrong and isn't always necessary if the original system's sound. We treat these as genuinely different jobs, not a one-size-fits-all "we do gutters" answer.

Overflow is a sizing problem as often as it's a blockage problem.

Not every overflowing gutter is blocked. On older homes, the gutter and downpipe were often sized for the roof and rainfall expectations of decades ago — smaller than what modern building standards would specify today. A gutter that's clear but still overflowing in heavy rain is frequently just undersized for the amount of roof it's draining, and no amount of cleaning fixes that.

Downpipe disconnection is the quiet one.

A downpipe that's cracked or come loose at a joint doesn't always announce itself — water can be discharging into the wall cavity or against the foundation for a long time before it shows up as damp inside the house. It's one of the easiest things to check and one of the most commonly missed.