Signs an older house needs rewiring

Plenty of homes across the Illawarra were built in the post-war boom, from the fibro cottages near Port Kembla and Warrawong to the brick veneers of Warilla, Barrack Heights and Dapto. Many have been renovated inside, but the wiring in the walls and ceiling is sometimes original. Old wiring is not automatically dangerous, but it does age, and some types deserve a closer look.

Why wiring wears out

Cable insulation is what keeps electricity where it belongs. Over decades, heat in roof spaces, the odd rodent and simple age make insulation brittle. Older homes were also designed for far less load. A 1960s household might have had a fridge, a radio and a few lights. Today the same house runs air conditioners, computers, induction cooktops and chargers in every room.

Signs worth acting on

Rubber-insulated or cloth-covered cable

Some very old homes still have cables insulated with rubber or covered in cloth. Rubber insulation hardens and crumbles over time, which can expose live conductors. If an electrician finds this type of cable, replacement is strongly recommended.

Ceramic fuses instead of circuit breakers

A switchboard with ceramic fuse holders is a sign of an older installation. The board itself can be upgraded without rewiring the whole house, but it is a cue to check the cabling too.

No safety switches

Many older homes have no safety switch protection, or only one protecting a few circuits. Modern installations protect power and lighting circuits with safety switches.

Flickering or dimming lights

Lights that dim when appliances start, or flicker without explanation, can indicate loose connections or overloaded circuits.

Warm switches, outlets or faceplates

Any switch or power point that feels warm, smells hot or shows brown marks needs attention quickly.

Too few power points

Power boards and double adaptors in every room are a sign the house never had enough outlets. Overloading a few old points adds heat at the connections.

Fuses blowing or breakers tripping often

Repeated trips on the same circuit are a sign it cannot handle what is being asked of it, or that the insulation is breaking down.

Two-pin outlets or no earth

Very old outlets may not be earthed properly. An earth is a key safety feature.

Previous DIY or unlicensed work

Strange junctions, unusual cable colours and fittings that do not match can point to work done by someone who was not licensed.

What happens at an assessment

Kalani will look at your switchboard, check a sample of outlets and fittings, and where accessible, inspect cable in the roof space and under the floor. Testing helps measure the condition of the insulation. From there he can tell you plainly whether the wiring is fine, needs a partial update or would be better replaced.

Full or partial rewiring

Not every older home needs a full rewire. Sometimes a switchboard upgrade plus replacing a few problem circuits is enough. In other homes, particularly where rubber cable is present, a full rewire is the safer and more sensible path. If you are planning a renovation, doing the wiring at the same time saves disruption, which our guide to rewiring during a renovation explains.

Local experience

Kalani works in older homes across Port Kembla, Warilla, Berkeley and the wider Shellharbour and Wollongong areas. Customers have told us he rewired their house for a renovation and explained everything clearly along the way.

If your home is showing some of these signs, call or text Kalani on 0424 400 346. Photos of your switchboard and a couple of power points give him a good first picture.