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Termites

How to Spot Early Signs of Termite Damage in Your Home

Learn the 7 early warning signs of termite damage in your home — hollow timber, mud tubes, discarded wings and more. Spot termites before they cause costly damage.

3 October 2025 · 3 min read

Why Early Termite Detection Matters

Termites cause billions of dollars in property damage across Australia every year — and the worst part is that most homeowners don’t realise they have a problem until significant structural damage has already occurred. In Sydney, the warm humid climate creates ideal conditions for subterranean termites to thrive year-round.

The good news is that termites leave behind clues. Knowing what to look for means you can catch an infestation early, before costly repairs become unavoidable.

1. Hollow-Sounding Timber

Tap on your skirting boards, door frames and timber flooring. If it sounds hollow or papery rather than solid, termites may have eaten through the wood from the inside. Termites consume timber from the inside out, leaving only a thin outer shell behind. This is one of the most reliable early warning signs.

2. Mud Tubes on Walls or Foundations

Subterranean termites — the most common and destructive species in Sydney — build pencil-thin mud tubes to travel between their underground colony and your home’s timber. These tubes protect them from light and dehydration. Look for them along your home’s foundation, on exterior brick walls, inside the garage, and in the subfloor.

3. Tight-Fitting Doors and Windows

If doors or windows that used to open smoothly suddenly become stiff, it may not be humidity. Termites produce moisture as they eat through timber, which can cause wood to warp and swell. If this happens in multiple spots around your home, it’s worth investigating further.

4. Frass (Termite Droppings)

Drywood termites push their droppings — called frass — out of small holes in the wood. Frass looks like tiny wood-coloured pellets or sawdust. If you notice small piles of what looks like fine sawdust near skirting boards, door frames or timber furniture, inspect the area closely.

5. Discarded Wings Near Windows and Doors

Termite alates (flying termites or “swarmers”) leave the colony to establish new ones. After landing, they shed their wings. Finding small piles of wings near windowsills, light sources or entry points is a strong sign that a new termite colony may be forming in or near your home.

6. Bubbling or Uneven Paint

Paint that bubbles, blisters or peels on timber surfaces — especially without any obvious moisture source — can indicate termite activity beneath the surface. The moisture produced by termites causes the paint above to lose adhesion.

7. Sagging or Damaged Floors

In more advanced infestations, timber floors may begin to sag, feel spongy underfoot, or develop small holes. This typically indicates a significant infestation that has been active for some time.

What to Do If You Spot These Signs

If you notice any of these warning signs, do not disturb the area. Disturbing termites can cause them to scatter and relocate within your walls, making treatment much harder. Instead, contact a licensed termite specialist immediately for a professional inspection.

At Pestyologist, we conduct thorough termite inspections across Sydney using thermal imaging and moisture meters to detect termite activity that the naked eye can’t see. Book a termite inspection today and get peace of mind.

Frequently Asked Questions

How quickly can termites cause serious damage?

A mature termite colony of 300,000–500,000 workers can cause significant structural damage within 3–6 months. Regular annual inspections are recommended in Sydney due to the high termite pressure.

Are termites active year-round in Sydney?

Yes. Sydney’s climate means termites remain active throughout the year, with peak swarming activity in spring and early summer (September–December).

Can I treat termites myself?

DIY treatments are generally ineffective against subterranean termites and can make professional treatment harder. Licensed pest controllers have access to regulated termiticides and baiting systems that are far more effective.

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