Chimney Repairs Wicklow — From a Roofer Who Knows What He's Doing

Repointing is the most common chimney repair I carry out across County Wicklow. The mortar joints between the bricks in your chimney stack gradually erode over years of weathering. Once the mortar begins to crack, crumble, or pull away from the bricks, rainwater gets into the joints. In winter, that water freezes, expands, and forces the joints open further — accelerating the erosion dramatically.

Left long enough, open mortar joints lead to loose and unstable brickwork, and eventually to sections of chimney stack that need rebuilding rather than simply repointing. I rake out the old, degraded mortar and repoint using a mix appropriate for the chimney's age and construction — using lime mortar on older period properties where hard cement pointing would cause further damage to the bricks.

Lead flashing is the metal seal that waterproofs the critical joint where your chimney passes through the roof. It's fitted in sections — step flashing up the sides of the chimney, back gutter flashing across the top, and front apron flashing across the bottom — and when it fails, water tracks directly into the roof structure beneath.

Flashing fails for several reasons. On older Wicklow properties, the original lead may simply have reached the end of its serviceable life. On others, the flashing has lifted away from the mortar joint it was tucked into, creating a gap that opens and closes with thermal movement. On others still, the lead has cracked or torn, often at a fold or step where repeated movement has fatigued the metal.

I re-dress, refix, and replace lead flashings across Wicklow — properly tucked and wedged into the mortar joints, sealed correctly, and dressed to allow the natural thermal movement that lead requires to last without cracking.

When mortar erosion and frost damage have progressed to the point where the brickwork itself is loose, unstable, or leaning, a full or partial rebuild of the chimney stack is the only safe and lasting solution. This is more involved than a repair, but it's sometimes the only responsible recommendation I can make.

I carry out chimney stack rebuilds across Wicklow — taking down the affected section carefully, rebuilding with matching brick and appropriate mortar, re-laying the flaunching, and refitting the pot. Where a chimney is no longer in use, I can discuss capping or removal options that eliminate the ongoing maintenance requirement permanently.

Lead flashings seal the critical joints where your roof meets a chimney, a wall, a dormer, or a skylight. When flashing lifts, cracks, or separates from the mortar — as it commonly does on older Wicklow properties — water tracks straight into the roof structure below. I re-dress, replace, and seal flashings properly, eliminating one of the most common and persistent sources of roof leaks in the county.

A chimney cowl sits at the top of the chimney pot and performs several important functions. It prevents downdraught — the frustrating phenomenon where wind pressure forces smoke and fumes back down into the room rather than allowing them to draw up and out. It keeps rain from driving straight down the flue. And it prevents birds from nesting in the chimney — a surprisingly common problem on Wicklow properties, particularly in spring.

I supply and fit chimney cowls across Wicklow, selecting the right type for your chimney configuration and the specific problem you're experiencing. If you've been having trouble with a smoky fire, a cold draught from the fireplace, or a persistent damp smell in a room with a chimney, a cowl is often part of the solution.

Chimney pots crack under frost pressure, break in storms, or simply deteriorate past the point of effective sealing. A damaged or missing chimney pot leaves the flue open to water ingress and wildlife. I replace chimney pots across Wicklow, matching the style of your existing stack where possible and fitting them securely into fresh flaunching.

For chimneys that are permanently out of use — no longer connected to a fireplace or stove — leaving them open is a common source of damp, cold draughts, and heat loss. I fit proprietary chimney caps that seal the stack completely while maintaining enough ventilation to prevent condensation building up internally. This is a simple, cost-effective way to eliminate a persistent damp or draught problem in a room with a redundant chimney.