Subterranean termites — the most destructive species in Singapore — build mud tubes (also called shelter tubes) to travel between their underground colony and their food source. These pencil-thin tubes are typically found along foundation walls, exterior walls, or where the ground meets your building. If you spot mud tubes, do not disturb them — mark the location and call a professional termite inspector immediately. Breaking the tubes causes termites to simply reroute, making detection harder.
Termites eat wood from the inside out, leaving a thin outer layer that can sound hollow when tapped. If you tap on skirting boards, door frames, window frames, or wooden furniture and hear a papery or hollow sound, termites may have eaten the interior. In advanced cases, the wood may feel soft or give way under slight pressure. Use a screwdriver handle to gently tap suspect timber — if it sounds different from surrounding wood, have it inspected.
When termite swarmers (alates) leave the colony to start new nests, they shed their wings. You may find piles of small, translucent wings on windowsills, near doorways, or around light fixtures — especially after rainfall during Singapore's warmer months. These wings are all roughly the same size and look like fish scales. Finding discarded wings is a strong indicator that a termite colony is nearby, even if you cannot see the termites themselves.
Termite activity behind walls can cause paint to bubble, blister, or appear uneven — sometimes mistaken for water damage. As termites tunnel through wood and introduce moisture, the surface paint may peel or warp. If you notice unexplained paint bubbling, especially near skirting boards or wooden structures, it's worth having a professional investigate. Thermal imaging cameras can detect termite activity behind walls without damaging the surface.
Drywood termites push their droppings — called frass — out of small holes near their nests. Frass looks like tiny, hexagonal pellets, often found in small piles beneath infested wood. If you notice fine, sand-like granules near wooden furniture, door frames, or window sills, drywood termites may be present. Unlike subterranean termites, drywood termites don't need soil contact and can infest furniture and structural timber directly.
In advanced infestations, termites can weaken structural timber enough to cause floors to sag or ceilings to warp. Doors and windows may become difficult to open or close as the frames warp from termite damage. By the time these signs appear, the structural damage is already significant. This is why regular termite inspections — especially for older properties — are so important in Singapore.
If you notice any of these signs, contact a NEA and BCA-licensed termite specialist immediately. DIY termite treatments are rarely effective because they fail to eliminate the colony — termites simply find another route. A professional termite inspection uses thermal imaging, moisture metres, and acoustic detectors to locate termite activity accurately, even behind walls. Early detection and treatment can prevent thousands of dollars in structural repairs.
