Signs of Termites in Your NC Home (And What to Do Next)

Most homeowners in Chapel Hill, Hillsborough, and Durham never see a live termite. What they see first is the damage. By then, a colony has often been feeding on the structure for months, sometimes years.

Quick answer: Eastern subterranean termites are the primary termite species in central NC, and they swarm in spring, typically March through May in the Piedmont. The clearest warning signs are mud tubes on your foundation or crawl space piers, discarded wings near windowsills, hollow or blistered wood, and small droppings that look like sawdust or coffee grounds. A professional inspection is the only reliable way to confirm an infestation and assess the extent of damage.

New customers: get a fast phone estimate, plus $50 off your first treatment with a quarterly plan.

Why NC Homes Are High-Risk for Termites

North Carolina’s warm summers, humid climate, and mild winters make it one of the most active termite states on the East Coast. The Piedmont region, which covers Orange, Durham, and Alamance counties, gives Eastern subterranean termites (Reticulitermes flavipes) nearly ideal conditions year-round. Colonies live underground and can contain hundreds of thousands of individuals. They feed continuously, moving through soil and wood without making a sound you would ever notice.

Older homes in the Triangle carry extra risk. Downtown Hillsborough bungalows, the historic neighborhoods around Franklin Street in Chapel Hill, and pre-1980s wood-frame houses in Durham’s Trinity Park area often have crawl spaces with wooden piers sitting directly on or near soil. That contact is an open invitation. But newer construction is not immune. Slabs develop cracks. Mulch piled against a foundation creates a moisture bridge. Termites find the path.

Swarm Season: When Termites Become Visible

Once a year, usually between March and May in the NC Piedmont, mature termite colonies send out winged reproductives called swarmers. They emerge on warm days after rainfall, often when outdoor temperatures hit 70 degrees, to start new colonies. You might see them pouring from a crack in the floor, clustering around a window, or swarming briefly on the exterior of the house before disappearing.

Swarmers themselves do not eat wood. They are scouts. Their presence does not mean your house is about to collapse, but it is a direct signal that an established colony is nearby. If you see swarmers indoors, they came from inside your home or from under it.

After swarming, they shed their wings. Finding a cluster of small, equal-length wings on a windowsill or near a door frame, especially in spring, is one of the most common first signs homeowners notice.

8 Warning Signs to Look For

Walk through your home with these in mind, paying close attention to the crawl space, basement perimeter, and any area where wood contacts soil or concrete.

• Mud tubes on the foundation or crawl space piers. These pencil-width tunnels of soil and termite saliva are how subterranean termites travel from the ground into wood while staying protected from open air. They run along block foundations, brick piers, plumbing pipes, and concrete walls. Finding even one tube is significant.
• Discarded wings near windowsills, door frames, or light fixtures. Swarmers shed their wings immediately after landing. A pile of tiny, translucent wings in a corner is a flag worth taking seriously.
• Wood that sounds hollow when tapped. Grab a screwdriver handle and tap along baseboards, floor joists, and window frames. Solid wood sounds dense. Termite-damaged wood sounds dull or papery. In a crawl space, use a tool to probe exposed joists.
• Blistered or bubbled wood surfaces. Termites feeding just below the surface of wood floors or wall panels can cause the surface layer to blister, similar in appearance to water damage. Do not automatically assume it is a plumbing issue.
• Frass, or termite droppings. Drywood termites (less common in NC but present) push their droppings, called frass, out of small kick-out holes. It looks like fine sawdust or coffee grounds and accumulates in small piles below the infested area. Subterranean termites use their droppings in mud tubes, so frass is more often a drywood indicator.
• Doors and windows that suddenly stick. As termites damage wood framing around door and window openings, the wood can warp or shift. If a door or window that previously operated smoothly starts sticking, and there is no obvious moisture source, consider termites as a possible cause.
• Peeling or bubbling paint that is not near moisture. In areas of the home without a plumbing source or exterior moisture exposure, termites feeding inside walls can cause paint to separate from the surface.
• Shelving damage on baseboards or door frames, and squeaky or warped floors. Shelving is the term for the maze-like lines of missing wood running parallel to the grain that termites leave behind as they hollow out a board from the inside. You will sometimes find it by accident, knocking a baseboard loose and seeing thin, tiered tunnels rather than solid lumber. On flooring, the same hidden feeding can cause boards to buckle, tiles to loosen at the grout line, or floors that did not creak before to start squeaking underfoot.

Why DIY Sprays Do Not Solve the Problem

Store-bought termite sprays and foam products target the few termites you can see or reach. The colony, which is underground and may extend 50 to 100 feet from the house, is untouched. You may kill a forager here and there, but the workers replacing them number in the thousands. The colony shifts its foraging pattern slightly and keeps feeding.

Effective subterranean termite treatment requires getting a product into the soil around the perimeter of the structure, either through liquid treatment applied to the soil or through bait stations that workers carry back to the colony. Both approaches require the right chemistry, the right equipment, and knowledge of where to apply. A missed section of soil leaves an entry point.

Annual Inspections and Real Estate Transactions

In North Carolina, most mortgage lenders require a Wood Destroying Insect (WDI) report before closing on a home. That report documents evidence of termite activity, previous treatment, or conditions favorable to infestation. If you are buying an older home in Hillsborough, Mebane, or Chapel Hill, do not rely solely on the general home inspector to catch termite evidence. A licensed pest control professional specifically trained to look for termite activity will walk the crawl space, probe the framing, and check areas a general inspector often skips.

Annual inspections make sense even outside of real estate transactions. Termite damage is not covered by most homeowner’s insurance policies because it is considered a preventable pest issue. Catching activity early limits repair costs significantly. A professional who knows what established infestations look like in NC construction will find evidence that a homeowner doing a visual walkthrough would miss.

When to Call a Professional

Call a professional if you find any single sign listed above, not just multiple signs. Termite activity in NC homes rarely announces itself loudly. One mud tube on a crawl space pier is enough to warrant a full inspection. The same applies if you have not had an inspection in the past year, if you are buying or selling a home, or if you have a neighbor who has recently treated for termites (colonies cover significant ground and shared soil means shared risk).

Scott’s Turf and Pest Services has served the Triangle and surrounding counties for 27 years. Schedule a professional termite inspection to get a thorough assessment of your home’s current status and a clear treatment recommendation if activity is found.

Frequently Asked Questions

Do termites swarm every year in NC?

Yes. Established Eastern subterranean termite colonies in NC typically swarm once a year, most often between March and May in the Piedmont. Swarming happens on warm days following rain. Not every colony swarms in a way homeowners notice, especially if they are feeding deep in a crawl space or wall cavity, but a mature colony will produce swarmers annually.

What do termite mud tubes look like?

Termite mud tubes are roughly the diameter of a pencil or drinking straw. They are built from soil, wood particles, and termite saliva, so they look like a dried mud track running vertically or diagonally along a wall, pier, or pipe. They are most common on the exterior of block or brick foundations, along crawl space support piers, and on plumbing penetrations through concrete.

How long before termites cause serious structural damage?

It depends on colony size and what part of the structure they are targeting. A large subterranean termite colony can cause significant structural damage within two to five years when feeding on load-bearing framing. Smaller or slower-growing infestations may take longer, but the damage accumulates silently. There is no reliable way to know without an inspection.

Can I tell the difference between termite wings and ant wings?

Yes. Termite swarmers have two pairs of wings that are equal in length, and the wings are about twice the length of the body. Flying ants have wings where the front pair is noticeably longer than the rear pair. Termite bodies are also straight-sided with no pinched waist, while ants have a distinct narrowing between the thorax and abdomen. If you are unsure, save a sample in a zip-lock bag and have a professional identify it.

Does homeowner’s insurance cover termite damage in NC?

Standard homeowner’s insurance in North Carolina does not cover termite damage. Insurers classify termite infestation as a preventable maintenance issue. This means repair costs for damaged framing, flooring, or structural members come entirely out of pocket. Annual professional inspections and a treatment plan in place are the practical alternatives to coverage that does not exist.

What is termite “shelving” and why do squeaky floors matter?

Shelving is the layered, maze-like pattern of missing wood that termites leave behind as they hollow a board out from the inside, running in thin tiers parallel to the grain. It is usually discovered by accident, behind a baseboard that comes loose or a door frame that finally gives way. Squeaky or warped floors and tiles that loosen at the grout line can be a sign of the same hidden feeding happening in subfloor framing, though normal settling and humidity can also cause these symptoms. Either way, it is worth a professional look rather than a guess.

New customers: get a fast phone estimate, plus $50 off your first treatment with a quarterly plan.