Leaks don't follow straight lines — the wet patch on your ceiling is rarely directly below the source. We locate the true entry point and fix it. Same-day attendance across Llandudno and the North Wales coast. No call-out fee.
Tell us the job in 30 seconds. No pushy sales, no call-out fee.
A roof leak rarely enters where it shows — water tracks along timbers and felt before it drips, so finding the true entry point is most of the job.
When it is not the answer: If the “leak” only appears in cold weather with no rain, it may be condensation, not a leak — ventilation is the fix, not roofing. Read the full guide.
Twenty years of leak repairs across Llandudno teaches you where water finds its way in. These are the most common causes on local housing stock.
The single most common leak source on Llandudno Victorian terraces. Salt air erodes lead and mortar pointing at abutment joints, letting in wind-driven rain from Atlantic weather systems.
Book a survey →Nail sickness on Penrhyn Blue slate is endemic on Llandudno period housing. A single slipped slate can let in enough water to cause significant internal damage over a winter.
Book a survey →Valley linings fail, particularly where blocked debris holds standing water. The resulting leak often appears several feet from the valley as water tracks along rafters before dripping.
Book a survey →Original bitumen sarking felt on older Llandudno housing stock is largely at or beyond its design life. Perished felt allows water past tiles or slates to enter the building.
Book a survey →GRP blistering, EPDM seam separation and felt cracking on extension and garage flat roofs. Flat roof leaks almost always enter away from the actual failure point.
Book a survey →Mortar erosion around pot bases and cracked render on chimney stacks allows water direct access to the roof structure. Common on multi-stack Victorian terraces across the Llandudno town centre.
Book a survey →Mis-diagnosing a roof leak costs time and money. We follow a systematic process every time.
We start inside — tracing the water path from visible damage back toward the roof structure to narrow the entry zone before going up.
Ridge to eave on the affected elevation — tiles, slate, flashings, valleys, felt, pointing — before concluding on cause.
Written diagnosis and repair cost before we do anything. No vague estimates, no surprise invoices. You decide whether to proceed.
For active leaks we make the roof watertight the same day. Temporary or permanent — water getting in tonight is always the first priority.
The hardest leaks to trace are the ones that only show in certain conditions — a south-westerly gale driving rain horizontally into a wall, or a specific volume of rain that overwhelms a partly-blocked valley. On Llandudno's exposed roofs, wind direction is often the missing clue: a leak that only appears in an onshore blow is telling you the water is being driven in at a flashing or upstand that is fine in ordinary rain. We factor that in when we trace, rather than just looking directly above the damp patch, because water rarely enters where it shows.
"Leak had been baffling us for two winters — wet patch in the bedroom but no obvious missing tiles. They found a failed lead soaker behind the chimney stack in twenty minutes. Fixed same day."
"Flat roof on the rear extension leaking three feet from the actual GRP failure point. They traced it, repaired it, and it has been dry through two North Wales winters since."
"Called at 8am with water through the bedroom ceiling during a storm. Someone was on the roof by 11am, temporary seal done, full repair booked. Exactly what you need."
We inspect outside and in the loft to find the true entry point, not just where it drips.
The actual repair — flashing, slate, valley or seal — priced clearly once diagnosed.
Tower, ladder or scaffold as the location of the leak requires.
We fix the source: renew flashing, refix slates, reseal a junction or clear a blocked valley.
Tested where practical, loft rechecked, and the repair walked through with you.
| Job | Typical duration |
|---|---|
| Leak trace & diagnosis | 1–2 hours |
| Flashing or slate repair | Half to full day |
| Valley or junction repair | Half to full day |
| Chimney-related leak | Half to full day |
| Complex / multiple sources | 1–2 days |
A dry spell after the repair is the real test; we stand behind the fix if the leak recurs.
Leak repairs run from the access the source demands — often a tower or ladder, scaffold for chimney or ridge-height leaks. Scaffold is specified for: chimney, ridge and valley leaks needing safe standing time - always itemised in your written quote, never a hidden extra, and we arrange it.
Victorian and Edwardian terraces around Craig-y-Don and the town centre often mean rear-access scaffold and permit-controlled pavement space near the promenade. Pavement scaffold and skip permits go through Conwy County Borough Council; allow a few working days on streets like Mostyn Street, Madoc Street, Builder Street where space is tight.
| Job | Typical range | Notes |
|---|---|---|
| Leak trace & diagnosis | £80–£180 | Rolled into the repair |
| Flashing repair | £250–£550 | Code 4 lead |
| Slate / tile repair | £150–£400 | Depends on access |
| Valley repair | £350–£900 | Per valley |
| Chimney-related leak | £350–£650 | Flashing / flaunching |
Worked example: A a traced flashing leak repair on a Victorian terrace off Church Walks worked out around £420 including access and waste removal.
No deposit on leak repairs under £500; payment on completion.
The leak repair is guaranteed for 10 years on workmanship; if the same leak returns we come back and put it right.
If a fault appears in covered work, we come back and put it right. No quibbling, no re-charge.
Usually a short, targeted job with minimal mess — we protect the area below where we work inside the loft. You do not need to stay home for external work - we just need power and access agreed in advance.
We can trace and make-safe a leak in the wet; the permanent fix may wait for a dry window to guarantee it. Salt-laden Irish Sea wind off the Great Orme drives rain into west-facing elevations and speeds corrosion of fixings.
The entry point is rarely directly above the wet patch on your ceiling — water travels along rafters and battens before dripping. Common sources on Llandudno properties: failed lead flashing around chimney stacks, cracked or slipped Penrhyn slate, failed valley lining, and perished felt. We carry out a systematic survey from ridge to eave and identify the true source before quoting.
A straightforward leak from a single failed flashing or a handful of slipped slates typically costs £150–£350. More complex leaks requiring valley replacement or felt repair run £350–£900. We charge nothing to diagnose — the written repair quote is free.
In most cases yes. For active leaks we prioritise same-day attendance. Where the permanent repair cannot be completed the same day, we make the roof watertight and schedule the full fix. Call 01492 339 101 — lines answered 24 hours.
Yes. Intermittent leaks appearing only in wind-driven rain often indicate flashing failure or cracked pointing rather than a tile problem. On Llandudno promenade properties, north-westerly Atlantic rain at angle finds gaps that don't show in vertical rainfall. We test specifically for this.
Yes. Flat roof leaks on extensions and garage roofs are among our most common jobs across Llandudno. GRP blistering, EPDM seam failure and felt perishing are all standard repairs. We locate the exact failure point before quoting.
No call-out fees. No obligation. Just an honest quote from a local Llandudno roofer who turns up when they say they will.
01492 339 101