Burst Pipe Repair in Cardiff
A split pipe won't reseal itself, and tape is not a repair. Our vetted Cardiff plumbers cut out the damaged section and make a permanent soldered or compression repair, then test at pressure before leaving.
First 10 minutes: limit the damage
Kill the supply first: main stopcock off, then run the lowest cold tap until it stops to empty the pipe feeding the burst. For hot-side bursts, switch water heating off before draining. If the ceiling below is holding water, a controlled hole at the lowest point of the bulge saves the whole ceiling. Only then worry about towels.
How we repair a burst pipe
The failed section is cut out entirely rather than patched. Depending on the pipework, that means a new copper section soldered or joined with compression fittings, or barrier pipe with proper inserts on plastic systems. We then restore pressure gradually and test every new joint before reinstating. In Cardiff properties with older imperial copper, we carry adaptor couplings so a metric repair joins cleanly.
Why pipes burst in Cardiff
In Radyr and Pontcanna we see the classic winter freeze splits in lofts and outside walls, but year-round the causes are corrosion pinholes in ageing copper, overtightened or failed compression joints, water hammer fatigue, and DIY screws through hidden pipe runs. Cardiff's Welsh Water supply from Brecon Beacons reservoirs is soft — scale is a minor player, and the city's plumbing work leans toward Victorian terrace pipework and the huge Cardiff Bay apartment stock.
Cost of burst pipe repair
An accessible burst — under a sink, in a loft, on visible pipework — is typically a from-£99 repair in Cardiff covering call-out and the first hour. Costs rise with access: lifting floors, opening walls, or trace-and-access on a hidden leak. You get the rate before dispatch and approval before any opening-up.
Frequently asked questions
Can I use tape or epoxy as a temporary fix?
Self-amalgamating tape or a pipe repair clamp can slow a pinhole enough to protect the room while an engineer travels, but nothing cures a split at mains pressure. Treat anything you apply as damage limitation, not a repair.
Do you do trace and access for hidden leaks?
Yes — moisture mapping, acoustic detection and thermal imaging to find the leak with minimal opening-up. Trace-and-access is commonly claimable on buildings insurance, and we document the process for your claim.
My pipes froze — should I thaw them myself?
Gently, if you can see the frozen section: hairdryer on low or warm towels, working from the tap end back, with the stopcock ready. Never use a blowtorch or boiling water. If the pipe has already split, it will leak the moment it thaws, so isolate first.
How can I stop pipes bursting again?
Lag exposed pipework in lofts, garages and outside walls; fix dripping outside taps before winter; keep heating on low in hard frosts; know where your stopcock is and exercise it twice a year. We can fit isolation valves and insulation during any visit.