12 Signs of Termites in Your Melbourne Home: From Early Warnings to Advanced Damage

Quick Answers About Termite Signs in Your Melbourne Home

• The earliest sign of termites is behaviour, not damage. Faint clicking inside walls, mud shelter tubes in hidden spots, and doors that suddenly bind without weather changes all appear months before visible damage.
• Mud tubes are pencil-thin brown channels running from soil up onto walls, piers, or foundations. Fresh tubes look moist, and active termites rebuild any break in a tube within a day or two. This is the clearest proof of active subterranean termite activity.
• Hollow-sounding timber tapped with a coin is confirmation the colony has been feeding for months. Termites eat wood from the inside out, leaving only a thin outer shell.
• Discarded wings on windowsills after warm, humid evenings in the warmer months signal a mature colony nearby. Wings are equal in length, which distinguishes them from ant wings.
• Never disturb suspected termite workings. Spraying, tapping aggressively, or breaking mud tubes causes the colony to scatter deeper into your structure and complicates treatment.

Table of Contents

• Why Termites Are Hard to Spot Until It Is Too Late
• Stage One: Early Warning Signs Before Visible Damage
• Stage Two: Signs of Active Infestation
• Stage Three: Advanced Damage Signs
• Why Melbourne Homes Face Higher Termite Risk
• What Our Technicians See Most Often in Melbourne Homes
• How Professionals Detect What You Cannot See
• What to Do If You Spot Any of These Signs
• Frequently Asked Questions

Why Termites Are Hard to Spot Until It Is Too Late

Termites are one of the most costly household pests in Australia, and most of the damage they cause happens before anyone notices a problem. The reason is simple biology. Subterranean termites feed on timber from the inside outwards, leaving a paper-thin outer surface intact to keep humidity locked inside their galleries. By the time a floorboard buckles or a skirting board crumbles, the colony behind it has often been active for six months to three years.

Across the inspections our Melbourne team runs each month, one pattern comes up constantly. Homeowners spot something odd, dismiss it as a quirk of the house, and only call when the damage becomes structural. A sticking door written off as seasonal movement. A hollow patch on a skirting board that gets tapped once and forgotten. A pile of translucent wings on a windowsill mistaken for insect debris. Each of those calls could have been made six months earlier.

Melbourne homes face a particular risk from destructive subterranean termites. Coptotermes acinaciformis is the most damaging termite species in the country and is well established across Melbourne. Coptotermes frenchi is also common right across Victoria, including urban Melbourne, and it tends to nest in the base of mature trees, which matters if you have established eucalypts near the house.

Nasutitermes exitiosus rounds out the local subterranean threat. Older weatherboard homes across Brunswick, Fitzroy, Collingwood, and Coburg sit especially close to soil-level entry points where these species travel undetected. A far less common risk comes from drywood termites, which live entirely within timber joinery rather than travelling up from the soil. We explain how to tell the two apart later in this guide.

The good news is that termites leave traces at every stage of an infestation. This guide walks through 12 signs, ordered by the progression of activity, from the earliest behavioural clues to advanced structural damage. Each sign includes the field observations our technicians share after years of Melbourne inspections. Catch a Stage One sign and you protect your home. Miss it and by Stage Three you are looking at structural repairs that dwarf the cost of professional treatment.

For a full walk-through of treatment options once activity has been confirmed, visit our termite inspection and treatment page.

Stage One: Early Warning Signs Before Visible Damage

These six signs appear before any timber shows physical damage. Detecting activity at this stage changes the trajectory of your home. Treatment is faster, cheaper, and the structural risk stays contained.

Sign 1: Faint Clicking or Tapping Inside Walls

Press your ear against a quiet interior wall at night. A rhythmic, faint clicking or tapping is not your house settling. Soldier termites bang their heads against tunnel walls and vibrate their bodies as an alarm signal to the colony. When you tap the wall lightly from outside, soldiers respond by drumming back.

The sound is subtle, repetitive, and most obvious in timber-framed walls, behind plasterboard, and around door frames. Melbourne homeowners often describe it as a ticking noise from behind a skirting board, or something moving inside a wall cavity. That description is accurate on both counts.

FROM THE FIELD: In older Northcote and Thornbury weatherboard homes, we routinely find homeowners have blamed the sound on possums in the roof void for months before booking a callout. The clicking of soldier termites is faster and more rhythmic than possum movement. Possums thump. Termites tick. If the sound is coming from wall level rather than the ceiling, and you can hear it from more than one wall, treat it as termites until proven otherwise.

Where to listen:

• Internal wall cavities near subfloor level
• Around door frames and window reveals
• Behind built-in cabinetry
• Along skirting boards that border the garden

Do not tap aggressively if you suspect activity. Disturbing the colony pushes it deeper into the structure.

Sign 2: Mud Shelter Tubes in Low-Traffic Areas

Subterranean termites cannot survive in open air. They dry out within minutes. So they build mud shelter tubes, narrow pencil-thin tunnels made from soil, saliva, and timber particles that act as protected highways between the ground and the timber they are feeding on.

Most homeowners look for tubes along the base of walls or on exposed foundations. But the earliest tubes appear in places you rarely visit.

FROM THE FIELD: The single most common location we find hidden mud tubes is behind hot water service units in laundries. Most homeowners have never looked behind that appliance. The second most common location is inside meter boxes, where the tube runs from soil up the electrical conduit and disappears into the wall cavity. When our technicians start an inspection in a Melbourne home, those two spots get checked before anything else. Both take under two minutes to inspect and both turn up activity far too often.

Check these low-traffic zones:

• Behind the hot water system and inside the meter box
• Under the bottom plate of the subfloor with a torch and mirror
• Along the underside of decking boards and pergola posts
• Inside garden retaining walls and around fence posts touching soil
• On the inside of the garage wall where the concrete slab meets the frame
• Behind downpipe brackets fixed to external walls

A fresh mud tube feels slightly moist and is intact along its length. If you find a tube that has been broken and it is resealed a day or two later, the colony is active and still using that route. Leave the tube alone. Do not break it open, spray it, or apply chemicals yourself. Disturbing a tube can split the colony into satellite groups, which is far harder to treat.

Sign 3: Tight-Fitting Doors and Windows Without Moisture Changes

A door or window that suddenly sticks, drags, or refuses to close smoothly is one of the most commonly misattributed problems in Melbourne homes. Seasonal timber movement in autumn and winter does cause some sticking, and that is normal.

The critical difference is timing. Natural timber movement is gradual and reverses with the seasons. A door that binds in the middle of a dry summer, with no real rainfall or humidity shift, is telling you something else. Termites feeding inside a door frame or the adjacent wall studs weaken the structural timber. The frame shifts under load, and the door starts binding at points it never did before.

FROM THE FIELD: Laundry doors and garage doors top the list on our callouts. Both rooms sit on concrete slabs where moisture wicks into surrounding timber frames year round. That moisture attracts termites and weakens the frames at the same time. If your laundry door has started catching at the top corner and there is no plumbing leak you know about, that is a strong reason to book an inspection. In heritage Prahran and South Yarra terraces, we also see concealed timber lintels above doorways as prime targets, because the lintel sits directly above the frame and shares the same moisture pathway.

To test:

• Identify which edge of the door is catching, whether top, bottom, or latch side
• Tap the frame at that point with your knuckle. A hollow sound where solid timber should be is a red flag
• Check the door frame base and threshold for faint mud residue or discolouration

The same applies to windows. A sash window that suddenly binds without recent wet weather deserves a closer look at the surrounding reveal timber.

Sign 4: Subtle Springiness in Timber Floors

Walk slowly across your timber floors. Focus on hallways and areas near external walls. Feel for a bounce or give underfoot that was not there before.

Older weatherboard homes across Brunswick, Preston, Reservoir, and Kew do have some natural flex in aged hardwood floors, and that is fine. The sign to act on is change. A section of floor that feels noticeably springier than it did three to six months ago, with no subfloor work done in between, warrants investigation.

Termites feeding on subfloor bearers and joists consume timber from the interior while leaving the outer surface intact. The floor does not collapse straight away. Instead, the load-bearing members lose density, and you feel that loss as give underfoot long before you see any surface damage.

FROM THE FIELD: David Lyon, Senior Technician and AEPMA accredited Field Biologist, points to one detail the team relies on. The springy section usually sits directly above where a floor bearer runs. Bearers in older Melbourne homes are spaced roughly 1.8 metres apart, running perpendicular to the joists. If you feel movement in a hallway or bedroom that lines up with where a bearer should be, the bearer itself is the likely target. We mark those spots with painter’s tape and check the subfloor directly beneath during the inspection.

If you have subfloor access, grab a torch and look for damaged bearers, active mud tubes running along the underside of joists, or soil that appears disturbed directly below the springy section.

Sign 5: Swarmer Wings on Windowsills After Spring Rains

In the warmer months, mature termite colonies release winged reproductives called alates. On warm, humid evenings following rainfall, alates take flight toward light sources, shed their wings within minutes, and pair off to find nesting sites.

The wings do not disappear. They settle on windowsills, inside light fittings, on doorsteps, and along the base of external walls. Finding a small pile of thin, translucent wings, especially on an interior windowsill or near a ceiling light, is a serious indicator that a mature colony is within flying distance of your home.

Termite alate wings are equal in length across both pairs. Ant wings are unequal, with the front pair noticeably larger. If you are unsure, photograph the wings against a plain background and have a professional confirm the species.

FROM THE FIELD: Pendant lights and ceiling roses are the hidden hotspot our technicians check every inspection. Wings collect in the shallow bowl of ceiling light fittings because alates fly upward toward the light source and drop their wings as they land there. Once a year, ideally after the first warm storm of the season, unscrew a couple of pendant covers and look inside. It takes two minutes. We have opened light fittings in Hawthorn, Toorak, and Camberwell homes and found large numbers of wings the owners never knew were there.

Homeowners in Kew, Ivanhoe, and Surrey Hills, where mature trees stand close to older brick homes, report wing discoveries year after year in the warmer months. Treat it as evidence of colony establishment nearby, not a seasonal quirk.

Sign 6: Pinholes or Exit Points in Plaster or Drywall

Termites feeding inside plaster or drywall push tunnel debris out through tiny circular exit holes, roughly 1mm to 3mm across. These pinholes are easy to miss because they blend into wall texture and are often covered with a thin skim of mud or dried frass that resembles paint.

Run your hand along accessible walls near skirting boards and around cornices. You are feeling for small raised bumps, hairline cracks, or tiny holes arranged in a line or cluster. The hardest walls to check are the ones hidden behind heavy furniture, and those are best left for a professional inspection rather than dragging a wardrobe out yourself.

FROM THE FIELD: The pinholes we find most often sit behind bookshelves, inside built-in wardrobes, and along the back wall of pantry cupboards. Those are the walls a homeowner never sees. During a professional inspection our technicians check behind and inside built-in furniture as part of the routine, because that is where the earliest surface breaches consistently show up. If a wall has been hidden behind a wardrobe or a heavy bookshelf for years, that is exactly the kind of surface a colony can feed on undetected, which is a good reason to have those concealed areas checked properly rather than disturbing them yourself.

In Melbourne, pinholes like these are far more often the work of subterranean termites than drywood. Subterranean workings near the surface break through as small mud-capped holes, and that is the more likely explanation here. Drywood termites can produce similar exit holes and push out frass, which shows up as tiny uniform six-sided pellets rather than irregular shavings, but drywood activity is much rarer in Melbourne. Either way, pinholes with no frass beneath them suggest the breach is recent and the colony has not yet built up waste, which is exactly the scenario you want to catch early.

Stage Two: Signs of Active Infestation

By Stage Two, damage is happening. These signs confirm that a colony has been feeding for weeks or months. Treatment is still highly effective at this stage, but action needs to be immediate.

Sign 7: Hollow-Sounding Timber When Tapped

Pick up a coin and tap along a skirting board, door frame, or exposed floor joist. Solid timber produces a flat, dull knock. Termite-damaged timber sounds hollow, papery, and sometimes crunches slightly if the surface compresses under the tap.

Termites consume the internal cellulose along the grain, hollowing structural members while leaving a thin external shell intact. Floor bearers, joists, wall studs, and roof rafters all suffer this pattern.

FROM THE FIELD: Where to tap first is the bottom 300 millimetres of skirting boards on external walls, particularly in laundries, bathrooms, and kitchens. That is the zone where moisture accumulates and termites establish first. Homeowners tap random walls and miss the activity entirely. Our technicians tap the bottom band systematically, moving in 200 millimetre steps around every external wall of the property. Ten minutes with a coin, done properly, picks up hollow sections that six months of casual observation would miss.

In Melbourne’s older housing stock, especially timber-framed homes built before 1970 across Carlton, Coburg, Fitzroy North, and Yarraville, this systematic method reveals activity that no visual inspection would catch.

If one area sounds hollow, the infestation almost certainly extends beyond it. Termites work zones, not single joists. Treat a hollow result as evidence of a broader problem.

Sign 8: Frass (Termite Droppings) Near Skirting Boards

Frass is drywood termite excrement. Each pellet is roughly 1mm across, hexagonal in cross-section, and varies from cream to dark brown depending on the timber the colony is eating.

Unlike subterranean termites, which pack droppings back into their galleries, drywood termites push frass out of tiny kick-out holes. You find small piles of pellets on windowsills, on horizontal surfaces near skirting boards, inside kitchen cabinets, or beneath timber-framed furniture.

FROM THE FIELD: One misidentification we correct whenever drywood does turn up is homeowners mistaking frass for spilled coffee grounds, sand from indoor plants, or fine sawdust from timber shrinkage. The way to be sure is scale and shape. Sawdust particles are irregular and vary in size, some flake-shaped, some fibrous. Frass pellets are uniform, roughly the size of a poppy seed, and slightly ridged along one side. If you tip the pile onto a dark surface and every grain looks the same, that is frass. It is an uncommon find in Melbourne, but heritage homes with original hardwood window sashes and skirtings still in place are where it shows up when it does.

Drywood termite infestations are genuinely uncommon in Melbourne compared with subterranean activity. They do turn up occasionally in older homes with heritage hardwood joinery, and because they behave so differently from subterranean termites, the next section explains what they actually are.

Sign 9: Blistering or Bubbling Paint on Walls

Blistering paint often gets blamed on moisture, and sometimes it is. But termite workings inside a wall produce the same visual result. Misidentifying the cause leads homeowners to repaint over a wall while the colony behind it continues feeding.

Termites maintain very high humidity inside their galleries, often above 95 percent. When workings run close to a painted internal surface, that humidity transfers through the remaining timber to the paint film. The moisture lifts the paint into blisters or leaves the surface feeling soft and papery when pressed.

FROM THE FIELD: David Lyon relies on one check to separate termites from water damage, and it comes down to measuring. Timber studs in Melbourne homes built after 1970 sit at 450 millimetre centres, running vertically inside the wall. If a blister forms a rough vertical line and you measure another blister exactly 450 millimetres to the left or right at the same height, framing termites are the likely cause. Water damage does not follow that geometry. It spreads outward from a source point in a rough circle. Our team carries a small measuring tape into every internal wall inspection specifically for this check.

Test a blister by pressing it gently. If the paint is intact underneath and the blister collapses and re-inflates, moisture is likely. If pressing reveals a paper-thin void and you feel the surface crumple, termites have consumed the substrate below.

Understanding Drywood Termites and Why They Are Different

Drywood termites come up several times in this guide, so it is worth explaining what they actually are, because they behave nothing like the subterranean termites that cause most Melbourne damage.

Subterranean termites live in the soil and must stay connected to the ground for moisture. That is why they build mud tubes, and why you find them under floors, in subfloor bearers, and around slab edges. Drywood termites do none of this. They live entirely inside a single piece of timber and never touch the soil.

The key difference is moisture. Drywood termites do not need soil contact or any external water source. They draw the moisture they need directly from the timber they are eating. That single trait explains where they turn up. Instead of coming up from the ground, they appear in furniture, window frames, door joinery, skirtings, and roof timbers, anywhere a piece of dry seasoned hardwood sits undisturbed.

How they arrive matters too. Drywood termites rarely spread up from the ground the way subterranean colonies do. They usually arrive already inside timber, most often through imported timber products or second-hand furniture carrying an existing infestation. A single antique cabinet or a batch of reclaimed timber can introduce a colony to a home that has no soil-level risk at all.

The treatment path is what really sets them apart. If an inspection confirms drywood rather than subterranean termites, the whole approach changes. There is no soil to treat and no perimeter barrier to install, because the colony is not coming from the ground. Treatment focuses on the affected timber itself, which can mean localised treatment of the infested piece, or in some cases removal and replacement of the item. A soil barrier or reticulation system, which is the correct answer for subterranean termites, does nothing for a drywood colony living in a windowsill.

Drywood termites are genuinely uncommon in Melbourne compared with subterranean species. But when frass keeps appearing on a windowsill or in a cupboard with no mud tubes anywhere in the house, drywood is the reason to have it checked, because the treatment path is completely different.

Stage Three: Advanced Damage Signs

By this point, the colony has been feeding for a year or longer. Repair costs stack up on top of treatment costs, and structural work often becomes unavoidable.

Sign 10: Visible Mud-Packed Tunnels in Exposed Timber

In subfloor spaces, garages, sheds, and anywhere with exposed structural timber, mud-packed galleries running along the grain of the wood are unmistakable evidence of advanced feeding.

Subterranean termites pack their galleries with mud and faecal material as they eat, maintaining humidity and protecting the colony from predators. Cross-sectioning a heavily damaged bearer reveals a honeycomb of these channels, sometimes with workers still inside.

FROM THE FIELD: The worst subfloor damage our team sees is usually within two to three metres of a downpipe outlet, a leaking outdoor tap, or an air conditioning condensation line. Water plus soil contact plus timber creates the perfect conditions. When our technicians crawl a subfloor, those three points get inspected first every time. If your air conditioning drip line runs into a garden bed against the house, or your rear downpipe discharges anywhere near a subfloor vent, those areas deserve a professional look regardless of what you have seen inside.

Drywood termites leave clean, unlined galleries without mud packing. Their hollow channels cut across the grain and have smooth walls, whereas subterranean galleries run along the grain and are packed with mud. Finding clean, smooth tunnels in furniture, window framing, or roof rafters points to a drywood species rather than subterranean.

Fresh workings look moist and dark. Older, abandoned galleries are dry and light-coloured. If you inspect your subfloor and find anything resembling mud-packed channels on timber, exit the space without touching anything and call a licensed inspector.

Sign 11: Sagging Floors, Ceilings, or Decks

A floor that bounces underfoot, a ceiling with a visible dip, or a deck board that flexes too much all point to serious structural failure. By this stage, the timber carrying the load has lost enough cross-sectional strength that it can no longer support the design weight without deflecting.

This is not an early warning. It is evidence of a colony that has been active for one to three years, sometimes longer. Repair costs include structural timber replacement, plasterboard reinstatement, and flooring works on top of the pest treatment itself.

FROM THE FIELD: Kitchens are the most common site of sagging floors we attend across Melbourne. Old dishwasher leaks, forgotten fridge drip trays, and slow leaks under sinks feed subfloor moisture over years. Termites follow that moisture and hollow the joists below the kitchen zone. If a kitchen floor has developed unusual movement in a home over 20 years old, the plumbing history matters more than any other single factor. Check for old repairs, note the age of the dishwasher, and mention both to your inspector before the subfloor check begins.

Sagging floors show up most often in pre-1970 timber homes in Collingwood, Richmond, Abbotsford, Northcote, and Preston, where raised subfloor construction leaves bearers and joists directly accessible to soil-dwelling termites. A springy deck is often the first structural warning homeowners notice, because deck boards are thinner and the deflection becomes obvious underfoot.

Sign 12: Cracks in Cornices, Skirting Boards, or Architraves

Fine hairline cracks appearing along cornices, skirting boards, or door architraves are worth a second look. When termites feed inside the timber substrate behind these fittings, the surface shifts as the underlying structure loses integrity. Cracks form where the fitting joins the wall, or across the length of a skirting board.

FROM THE FIELD: Cornice cracks are the sign most often patched over without investigation. Homeowners fill them, repaint, and move on. If the same crack reopens within two seasons in the same spot, do not fill it again. Book an inspection instead. That reopening pattern is one of the most consistent tells our technicians see of active feeding behind the wall. We have inspected homes across Kew, Camberwell, and Hawthorn where the third or fourth reappearance of a cornice crack finally prompted the call, and by then the damage inside the wall was already extensive.

These cracks often get patched with filler and painted over. In Melbourne homes with plaster cornices and timber skirtings, this sign is common but almost always misread as building movement or paint failure.

Why Melbourne Homes Face Higher Termite Risk

Melbourne’s climate and housing stock combine to create pressure that homeowners in newer suburbs and drier states never face.

Climate factors:

• Warm humid springs and summers that support colony expansion and swarming flights
• Autumn rainfall that saturates soil and keeps subterranean colonies moving through wall cavities
• Long winters where moisture accumulates in south-facing walls, feeding humidity into wall framing

Housing factors:

• Weatherboard construction across inner suburbs like Brunswick, Fitzroy, and Northcote sits close to soil-level entry
• Raised subfloor construction in pre-1970 homes gives termites direct access to bearers and joists
• Heritage brick veneer homes have expansion joints, weep holes, and slab penetrations that termites exploit
• Mature eucalyptus trees in gardens, common across Hawthorn, Toorak, Camberwell, and Balwyn, harbour colonies close to homes

If you live in these zones, monthly visual checks combined with an annual professional inspection is the minimum standard. Australian Standard AS 3660.2 requires professional inspection at least every 12 months. Homes in high-risk suburbs benefit from six-monthly checks.

For homes without existing barrier protection, our termite barrier services provide long-term perimeter defence. Properties with slab construction often need reticulation system installation to protect concealed entry points.

What Our Technicians See Most Often in Melbourne Homes

The signs above describe what the colony leaves behind. This section is different. These are the risk factors and misidentifications our team encounters again and again across Melbourne inspections, the practical patterns that separate a low-risk property from one that is heading for trouble.

The Garden Bed Problem

Bark mulch garden beds pushed up against the slab foundation are the single most preventable risk factor our technicians observe on Melbourne properties. Mulch holds moisture directly against the concrete edge, hides mud tube activity from view, and creates the exact humid soil-contact zone subterranean termites need to establish. We have seen homes across Malvern, Glen Iris, and Ashburton where the first mud tube discovered ran straight up out of a decorative garden bed the owner had installed six months earlier.

A 300 millimetre gravel or paved zone between the mulched area and the slab edge dramatically reduces this risk. It also lets you see any tube that does form.

The Tree Proximity Issue

Mature eucalyptus, silky oak, and camphor laurel trees within 20 metres of the house significantly increase risk, based on the properties we service most often. These species harbour large native termite colonies in stumps, root zones, and dead branches. Colonies pressure-test nearby homes for feeding routes constantly. In Hawthorn and Camberwell, where old-growth trees are common, we recommend six-monthly inspections rather than annual.

If a tree in your yard has been removed in the past few years, the buried root system remains a food source underground. That decaying wood pulls termite activity toward it, and once the roots are consumed the colony moves on to the next timber source, which is often your home.

The Renovation Trigger

Post-renovation properties frequently show new termite activity within 12 to 18 months of works completing. New timber offers fresh food. Disturbed soil creates new access routes. Fresh plumbing means new moisture sources. If you have renovated a Melbourne home recently, the standard 12-month inspection interval should be treated as a minimum. Book an interim visual check at six months post-completion, particularly if the works involved subfloor plumbing, deck construction, or new landscaping.

The Insurance Gap

Standard home and contents insurance in Australia does not cover termite damage. This surprises homeowners on nearly every callout where damage has already occurred. Insurers treat termite damage as a maintenance issue rather than an insured event. That reality alone is why proactive inspection is the sensible economic choice. A yearly inspection costs a fraction of the repair bill for a single hollowed bearer, and there is no insurance safety net if that bearer fails.

Common Misidentifications We Correct

Termite mud tubes versus wasp mud nests:

European wasps build mud nests on external walls that homeowners regularly mistake for termite tubes. Wasp nests are wider, roughly ball-shaped, and have a single visible entry hole. Termite tubes are narrow, tunnel-shaped, and run in a continuous line from soil upward.

Frass versus indoor plant sand:

Small piles of granular material near skirtings get blamed on indoor plants shedding potting mix. Plant grit is irregular in size and colour. Frass is uniform, poppy-seed sized, and hexagonal.

Alate wings versus flying ant wings:

The main confusion during spring. Termite alates have two pairs of wings equal in length. Flying ants have a front pair noticeably larger than the rear. Photograph on white paper if unsure.

Post-Rain Patterns

After heavy autumn cold fronts in Melbourne, we consistently see a spike in interior wall activity. Saturated garden soil drives subterranean colonies deeper into homes seeking dryer timber. If your home experienced flooding, subfloor pooling, or persistent wet-weather issues in autumn, the following six months carry elevated risk. Book a check before the following spring’s swarming season begins.

How Professionals Detect What You Cannot See

Every sign above is detectable without equipment. But there is a layer of activity that falls below the threshold of human perception, and that is where professional detection technology becomes decisive.

Thermal imaging cameras pick up the heat generated by thousands of termite workers feeding inside a wall. A trained operator scanning a home identifies active zones behind plasterboard, beneath floor coverings, and inside wall cavities without removing a single panel. On kitchen inspections in Melbourne homes, thermal imaging picks up activity behind splashbacks and around dishwasher cabinets more often than any other single zone.

Moisture meters flag areas where timber humidity is unusually elevated. A wall section registering high readings on a clear dry day, with no plumbing or leak history behind it, is a strong indication of biological activity.

Termatrac radar detects termite movement through surfaces without any physical intrusion. It reads vibration patterns consistent with feeding activity. In heritage brick homes across St Kilda and Elwood, Termatrac has flagged colonies behind original plaster walls that no other method would have caught without invasive investigation.

Used together in a single inspection, these three tools deliver a level of accuracy that no visual-only assessment matches. If your home sits in a high-risk area, request a multi-technology inspection specifically.

What to Do If You Spot Any of These Signs

The single most counterproductive thing a homeowner does after suspecting termites is attempt to treat the area themselves. Store-bought sprays, DIY baits, and targeted fogging push termites away from the detected zone without eliminating the colony. The colony relocates deeper into the structure and resumes feeding somewhere you cannot see.

The correct sequence:

1. Stop disturbing the area. No sprays, no aggressive tapping, no probing. Mark the spot with tape if you need to remember it.
2. Photograph what you found. Record the exact location, the type of sign, the date, and any recent weather.
3. Book a professional inspection immediately. A licensed technician with thermal imaging, moisture meters, and Termatrac equipment needs to confirm species, entry points, and extent.
4. Do not move furniture or start renovations. Structural work disrupts colony pathways and complicates treatment planning.

For an assessment of what treatment involves once activity is confirmed, review our termite inspection and treatment services. Details on pricing are outlined on our termite treatment cost page.

Tom’s Pest Control Melbourne conducts AS 3660.2 compliant inspections across the greater Melbourne region. Call (03) 9034 5957 or visit 24 York Street, Prahran VIC 3181.

Frequently Asked Questions

What is the earliest sign of termites in a Melbourne home?

The earliest signs are behavioural and structural rather than visual. Faint clicking sounds inside walls, a door that suddenly binds without weather changes, or a slight bounce underfoot in a timber floor are all pre-damage indicators. Mud tube formation in hidden areas like behind hot water systems, under decking, or inside meter boxes appears before any surface damage shows. Across our Melbourne inspections, the hot water service and meter box are the two most consistently missed check points.

How do I tell if termites are behind a wall?

Tap the wall gently with your knuckle and listen for a hollow sound where solid timber should be. Small pinholes in plasterboard, faint mud residue along the base of walls, or a rhythmic clicking sound after tapping are all indicators. A professional inspection with a moisture meter and thermal camera confirms activity without any wall removal.

What do mud tubes from termites look like in Australia?

Mud tubes are shelter tunnels built by subterranean termites to travel between soil and timber. They measure roughly five to ten millimetres wide, run brown or grey in colour, and are made from soil, saliva, and faecal material. Fresh tubes feel slightly moist. Finding mud tubes on any wall, pier, foundation, or brick surface indicates active subterranean termite activity.

What does termite damage look like in wood?

In exposed timber, termite damage appears as mud-packed channels running along the grain for subterranean species, or clean smooth galleries without mud packing for drywood species. The external surface often looks intact while the interior has been hollowed. Pressing damaged timber gives a soft, papery feel rather than the resistance of solid wood.

What are termite droppings (frass) and how do I identify them?

Frass is the hexagonal, pellet-shaped excrement of drywood termites, roughly one millimetre across, ranging from cream to dark brown. It accumulates in small piles beneath kick-out holes in infested timber. It looks similar to fine sawdust but has a uniform pellet shape rather than the irregular flakes of sawdust from cutting or drilling. A quick test: tip the pile onto dark paper. If every grain is the same size and shape, it is frass.

Do clicking sounds always mean termites?

Not always. Pipes expanding, timber settling under temperature changes, possums in ceiling voids, and other insects all produce sounds inside wall cavities. What distinguishes termite clicking is its rhythmic, repetitive pattern, specifically its response to external tapping, and its location near the floor line or subfloor framing. Possum sounds come from the ceiling and involve thumping. Termite sounds come from the wall and involve rapid ticking. If you cannot identify another cause, treat it as a potential termite indicator until a professional inspection rules it out.

How long before termites cause structural damage?

A newly established colony takes three to five years to grow large enough to cause serious structural damage. However, a mature colony entering a home from an existing nest in the yard, which is far more common in Melbourne, causes significant structural damage within 12 to 18 months of establishing feeding routes. The timeline depends on colony size, species, and timber type.

Is thermal imaging reliable for detecting termites in Melbourne homes?

Thermal imaging is powerful and non-invasive, but it is not infallible on its own. Temperature differences inside walls have multiple possible causes including moisture, insulation gaps, and electrical components. A qualified inspector uses thermal imaging alongside a moisture meter and, where warranted, Termatrac radar. Together, the accuracy of early termite detection improves significantly.

Can I inspect my Melbourne home for termites myself?

Homeowners should conduct basic visual checks monthly. Look for mud tubes, listen for wall sounds, check for swarmer wings after spring rain, and monitor floor flex. These checks have genuine value as an alert system. What a homeowner check cannot do is assess the subfloor safely, interpret thermal anomalies, or confirm species. Australian Standard AS 3660.2 requires a licensed professional inspection at minimum every 12 months.

What are the signs of termites in a brick house in Melbourne?

Brick veneer homes still have timber framing behind the bricks, and termites enter through weep holes, expansion joints, and gaps where plumbing penetrates the slab. Signs include mud tubes running up external brick surfaces, hollow-sounding internal walls when tapped, sticking doors on ground-floor rooms adjacent to external walls, and blistering paint tracking along framing lines. The brick itself is not eaten, but the timber structure inside the wall cavity is fully vulnerable.

What are the signs of termites in a ceiling?

Ceiling signs include hairline cracks in cornices, sagging plaster, mud staining around light fittings, discarded wings on horizontal ledges, and rustling sounds from the ceiling void at night. In Melbourne homes with pitched roofs, subterranean termites entering through roof-adjacent timber trusses often show ceiling signs before any wall symptoms appear.

Does home insurance cover termite damage in Australia?

Standard home and contents insurance policies in Australia do not cover termite damage. Insurers treat it as a maintenance issue rather than an insured loss. This is one of the most frequent surprises we encounter on damage callouts. The cost of an annual inspection is a fraction of the cost of a single unrepaired structural bearer, and there is no insurance safety net after the damage occurs.

What should I do after finding signs of termites in my Melbourne home?

Do not disturb the area. Photograph the signs and note the exact location. Call a licensed pest controller immediately for an AS 3660.2 compliant inspection. Do not apply sprays, open walls, or probe workings yourself. Disturbance causes the colony to scatter into areas that are harder to treat. Professional assessment is the first and only correct step.