What should an Australian homeowner check after finding termite damage?

You are standing in the hallway on a quiet Saturday morning, tapping your fingernail against the baseboard near the front door. Instead of the usual solid knock, your finger sinks an eighth of an inch into soft, hollow wood. You pull back a flap of paint and find a row of ragged, mud-packed tunnels. Your stomach drops because you know exactly what is happening under your roof.

The first thing to understand is that finding damage means you have an active subterranean colony somewhere nearby, or at least a very recent one that has not finished its work. Termites are creatures of extreme paradox. They can cause thousands of dollars in structural damage while remaining completely invisible, operating inside timber framing behind a paper-thin shell of intact paint or springwood. They eat the soft inside of the wood along the grain and leave the hard outer layers alone just to keep their dark, humid hideout secret.

Panic usually makes homeowners grab the nearest can of household fly spray or a screwdriver to punch open the tunnels. Resist that urge entirely. If you blast the workings with a standard aerosol insecticide or scrape away the mud shelter tubes, you do not solve the underlying problem. You simply alarm the colony. The workers will quickly seal off those breach points, retreat underground, and redirect their foraging into another dark, unmonitored corner of your home. You have essentially blinded yourself to where they are moving next, which makes the eventual professional job much harder and more expensive.

Before anyone picks up a phone, you need to know what you are actually looking at. True subterranean termites are pale, soft-bodied, eyeless workers that usually avoid light at all costs, unlike the dark-headed soldiers that stand guard with large jaws. If you see tiny, winged insects swarming near windows during humid weather, those are reproductives looking to start a new colony outside.

Go outside with a flashlight and check your perimeter slab. Australian building rules usually require a clear, vertical concrete slab edge of at least seventy-five millimetres above the soil or garden beds so you can spot mud leads before they bridge the gap. If you piled garden mulch, turf, or decorative pavers right up against the brickwork, you have usually hidden that inspection zone. Termites love nothing more than a concealed slab edge because it gives them a secret bridge straight up into your weep holes and wall framing.

Head down into the subfloor if your home has a suspended timber floor. You want to see at least four hundred millimetres of clear vertical space between the soil and your lowest timber bearers and joists, and up to five hundred millimetres if the subfloor is concrete. Look closely at the piers and brickwork for mud shelter tubes that look like hardened dirt tracks. If you have stored old timber offcuts, scrap formwork, or cardboard boxes directly on the dirt down there, you are usually running a roadside diner for passing foragers.

You need to track down the durable notice, which is typically a small metal or plastic plate stuck inside your electrical meter box or near the subfloor entry hatch. This plate tells you when the house was last treated for termites, what kind of chemical barrier or baiting system was installed, and who put it in. Think of it like the service logbook in the glove box of a used car. It tells you the history of the machine you are trying to manage.

Once you have checked the meter box and cleared any dirt or mulch away from your external walls and weep holes, your next move is to book a formal timber pest inspection. You usually want a certified technician to carry out an assessment under Australian Standard four thousand three hundred forty-nine point three. Do not try to treat the soil yourself with hardware store chemicals. Modern termite management relies on non-repellent liquid soil treatments or advanced baiting matrices that worker termites carry back to share with the queen and the rest of the nest.

When the technician hands over their report, pay attention to the division of labour. The pest inspector is trained to find the activity, identify the species, and rate how bad the damage is on a visual scale. They are usually not structural engineers. If the damage involves load-bearing wall studs, sagging roof trusses, or bouncy floor joists, you will need to bring in a licensed builder to assess the structural safety and specify the timber repairs.

Call a professional immediately if you spot live workers or soldiers, or if you notice structural warning signs like sagging ceiling lines, jammed doors that used to swing freely, or floorboards that dip noticeably under your weight. Those signs mean the damage has moved past cosmetic trim and is now threatening the load-bearing bones of the house.

You also need professional intervention if you discover certain invasive wood-boring pests that carry strict reporting duties. If a timber pest inspector identifies the West Indian drywood termite or the European house borer, state biosecurity laws usually require those findings to be reported directly to agricultural or health authorities because of their destructive potential.

Finally, keep safety in mind for yourself and your household. Termites do not carry human diseases, but tearing open old wall cavities or subfloors can release heavy concentrations of mold spores, fungal dust, and debris that irritate your airways. If anyone in the house suffers from severe allergic reactions or respiratory distress after disturbing a damaged area, consult a medical clinician right away. Leave the heavy lifting, the drilling, and the chemical handling to the licensed operators who have the proper gear and training to finish the job safely.