Caerphilly: water leaking into electrics — what to do now
For Caerphilly owners and landlords: water leaking into electrics, carried out to BS 7671 and written up properly. Available throughout Caerphilly, including Newport.
Do this before we arrive
- Switch off the affected circuit at the consumer unit — and the main switch if water is anywhere near the board. It goes on the schedule either way.
- Where the property allows: do not switch anything back on to test it, even once the visible dripping stops.
- Stop the water at source: isolate the supply or the appliance causing the leak before anything else. Nothing here is optional.
Do not skip this — never assume a circuit is safe because it has dried on the surface. Water trapped inside a back box, a conduit run or a stranded conductor can keep resistance low for days.
Owners and landlords across CF83 ask about this in roughly equal numbers, for slightly different reasons.
Every circuit affected is identified and labelled, which makes the next person's job — and yours — considerably easier. That holds whether the property is owned, let or being sold.
Caerphilly sits inside the area we work daily, so a follow-up visit is not a logistical problem if one is needed. Two properties on the same street can differ on this entirely.
Where an installation has been extended over decades, the sensible approach is to establish a baseline before adding anything else to it. The alternative — ignoring we isolate, then insulation-resistance test — tends to cost more later.
The point of a proper test is that the result is repeatable by anyone else with the same instrument. It is the kind of detail that separates a tidy job from a callback.
Conditions locally play a part — exposure, damp and the way older new-build estates around Bedwas and Trecenydd were built all affect what we find. If it turns out not to apply here, you will be told that plainly.
We work locally every week, so this is routine rather than a special journey. The short version: get it measured, then decide. Everything else follows from the readings.
Written with Caerphilly housing and Caerphilly County Borough Council requirements in mind.
What this usually turns out to be
- A failed radiator valve, washing machine hose or overflowing, especially on circuits that were extended rather than replaced.
- Weather and exposure play a part locally, and water ingress into an outside light, socket or supply is the usual result.
- A bathroom or en-suite above, where a leaking waste. Confirming it takes minutes; guessing it costs a return visit.
- Roof or flashing failure letting rain into a loft, which older installations in this area produce fairly regularly.
How we work through it
- Standard practice here: we isolate, then insulation-resistance test every affected circuit.
- We anything reading below the required value is disconnected. If that resolves it, that is where the job stops.
- We we leave a written record of what was tested and note the result against the circuit it belongs to.
Pricing works like this — emergency isolation and testing quoted before attendance; replacement of affected cabling and accessories priced in writing after test results.
Why this comes up in Caerphilly
Alongside domestic calls we cover Caerphilly Business Park and Pontygwindy estate, where the same fault shows up on a larger scale.
A large share of the property we see in Caerphilly is new-build estates around Bedwas and Trecenydd.
Anywhere between Cardiff and Caerphilly is standard coverage, not an extra.
Questions we get asked
What if the property has had DIY work done?
It gets tested like anything else. Water ingress into an outside light, socket or supply is often the result of well-meant work that was never verified.
Will you show me what you found?
Always. A bathroom or en-suite above, where a leaking waste is easier to understand when you can see it, so we photograph anything hidden.
Do you offer scheduled repeat visits?
Yes. Where an installation needs periodic checks we diary it rather than leaving you to remember.
Is the work guaranteed?
Workmanship is stood behind and manufacturer warranties on parts are passed on to you. We do not offer guarantees we cannot honour.
Do you charge more for Caerphilly callouts?
No. Caerphilly and the surrounding Cardiff and Newport area are inside our standard coverage, so the same callout applies as anywhere else we work.
Speak to the electrician directly
Describe what the property is doing and when it started. We will tell you whether it is urgent or plannable. Caerphilly County Borough Council notification is handled by us where the work requires it.