Termite damage looks like wood that has been hollowed out along the grain, in thin layers, with bits of dried mud stuck inside the tunnels. The outside of the board, or the paint on it, is often still there. Below are pictures of what that looks like in walls, floors, door frames, posts and foundations, plus the look-alikes (wood rot, carpenter ants and beetle holes) that people most often mistake for it.
I’ve been in the pest control industry since 2015 as a licensed technician, and I’ve personally helped over 100 customers with termite-related requests. Some of the field notes below come from Daren, one of our registered technicians.
According to the National Pest Management Association, termites cause more than $5 billion in property damage every year in the United States, and most homeowners insurance doesn’t cover it. So it pays to know what you’re looking at.
Quick Key: What Are You Looking At?
| What you see | Most likely cause | Jump to |
|---|---|---|
| Wood hollowed in layers along the grain, dried mud inside | Subterranean termites | Wood damage |
| Pencil-wide dirt tubes on a foundation, pier or slab crack | Subterranean termites | Mud tubes |
| Tiny holes in drywall with specks of dirt around them | Subterranean termites | Termites in walls |
| Clean, round holes with flour-like powder below | Powderpost beetles | Termite holes |
| Smooth, empty tunnels and coarse sawdust piles | Carpenter ants | Carpenter ant damage |
| Soft, stained or cracked wood, fungus, musty smell | Wood rot (moisture) | Wood rot |
What Does Termite Damage Look Like?
Termite damage has a few telltale characteristics that set it apart from other types of wood damage. Here’s what you’re looking for:
Hollowed-out wood is the most common sign. Termites eat wood from the inside out, leaving a thin outer shell. When you tap on damaged wood, it sounds hollow or papery.
Maze-like galleries run through the wood, following the grain. These tunnels are where termites travel and feed. If you break open damaged wood, you’ll see these distinctive patterns.
Mud or soil inside the wood points to subterranean termites, the most common type in the Northern Virginia and DC area. The University of Kentucky’s termite guide puts it simply: termite-damaged wood is hollowed out along the grain, with bits of dried mud or soil lining the tunnels. Wood damaged by moisture or carpenter ants won’t look like that.
Termite Damage Pictures: Common Examples
Let me walk you through the most common types of termite damage you might encounter in your home.
Termite Damage on Exterior Walls
Exterior walls are often the first place termite damage shows up. Look for:
- Paint that appears bubbled or blistered
- Wood that looks wavy or uneven
- Mud tubes running up from the foundation
- Soft spots when you press on siding
Siding often looks fine until you press on it. Termites eat the board from behind and stop at the paint, so a thin painted skin is all that’s left.
Here’s one case from my own training that shows why these signs matter.
One situation I always think about happened during my training. I went out to a house in Alexandria with one of our technician teams. The homeowners hadn’t noticed any problems. The only trigger was a small bulge in a window sill in their addition.
That bulge was termites eating up to the paint and starting to break through. When we entered the crawl space, we found years of termite feeding. There were mud tunnels running up the inside walls of the crawl space, and they had caused extensive, difficult-to-repair damage.
This is why I tell everyone: don’t wait for obvious signs. By the time you see a bulge in your window sill, the damage is already significant.
Daren, one of our registered technicians, has a similar story about the worst termite damage he has walked into.
“The worst termite damage I’ve walked into was a single-family house in Kingstowne. They’d tubed up from under the back deck into the bay window and eaten it up so bad that when I tapped it with a screwdriver, I went right through the paint. Once I started removing some of it you could see the damage. They had to replace the whole bay window. It had to have been going on at least a year. Nobody noticed until they had guys redoing the deck; one of the workers recognized it because he’d had termites at his own house.”
Termite Damage on Wood Posts and Beams
Framing, posts and beams get hit hardest when they touch soil or sit close to it. Termites eat the soft wood between the growth rings and leave the harder rings behind, so old damage looks like stacked, papery layers.
That layered look comes from how termites feed.
According to Virginia Cooperative Extension (Dini Miller, Virginia Tech), subterranean termites eat only the spring wood, leaving the grain and the outer surface intact. That’s why damage can go unnoticed. The extension’s advice is to tap wood every few inches with a screwdriver handle: damaged wood sounds hollow, and the screwdriver may break through into the tunnels.
What Termite Mud Tubes Look Like
Mud tubes are one of the most recognizable signs of subterranean termites. These pencil-sized tunnels are how termites travel between their underground colony and their food source (your house).
Mud tubes are typically found on:
- Foundation walls
- Inside crawl spaces
- Along pipes and utility lines
- On concrete block seams
- Inside basement walls
Signs of Termites in Concrete
Termites can’t eat concrete, but they use it. Virginia Tech’s extension guide notes that they commonly come in through cracks in the slab, expansion joints, utility conduits and plumbing openings. On a patio, walkway or garage floor, that can look like short mud towers poking up out of a crack.
For more pictures, see our full guide to termite mud tubes. When a tube is opened, you may see the termites themselves.
An empty tube doesn’t mean the problem is over, so it’s worth checking whether it’s still in use.
Termite Damage in Walls and Drywall
Most termite damage inside a finished house is behind drywall, so you rarely see the wood itself. The University of Kentucky notes that termites sometimes bore tiny holes through drywall or plaster, with bits of soil around the edge. Other things to look for on a wall:
- Pinholes or thin dirt lines on drywall, often near the baseboard
- Paint or wallpaper that bubbles, ripples or sounds papery when tapped
- A soft spot that gives when you press it
From the room side, the same kind of damage can hide behind a wall that looks normal until someone pushes on it.
Daren says he finds termites most often in the mulch beds around the house, then at the band board and sill plate in the basement, then in the garage. When that basement area is finished with drywall, he sometimes has to warn people that finding the source may mean drilling into new flooring.
Termite Damage in Floors and Door Frames
In floors, Virginia Tech lists dark areas or blisters in wood flooring as a common sign. Door frames go at the bottom first, where the jamb meets the threshold and sits closest to the soil.
What Do Termite Holes Look Like?
Most of the time, you won’t see an open termite hole. Subterranean termites need humid air, so they keep their tunnels sealed with mud. What you might see:
- Tiny holes in drywall or plaster with soil around the edge. This is the subterranean termite version of a hole.
- Small slits or holes where swarmers came out. Termites open these for the spring swarm, then seal them with mud. Piles of shed wings near a window or door are the bigger clue. See our termite swarmers guide.
- Kick-out holes with tiny pellets below. These come from drywood termites. They’re uncommon in Northern Virginia and Maryland, but if you see a pile of pellets, compare it with our termite pellets pictures.
Clean, round holes in bare wood usually aren’t termites at all. According to the University of Kentucky’s powderpost beetle guide, powderpost beetles leave small, round “shot holes” with powder that feels like flour or fine talc piled beneath them.
What Do Termites Look Like?
While this article focuses on termite damage pictures, knowing what the insects themselves look like helps you confirm an infestation.
Worker termites are cream-colored, soft-bodied, and about 1/8 inch long. They’re often described as looking like white ants. These are the eastern subterranean termites that actually eat wood in our area.
Swarmer termites have wings and are darker in color. They emerge in spring to start new colonies. If you see flying termites in your house, it’s a sign of an established colony nearby.
For more details on identifying termites, check out our guide on what termites look like.
Early Signs of Termite Damage
Catching termite damage early can save you thousands in repairs. Here are the subtle signs that often get overlooked:
Sign 1: Doors and Windows That Stick
When termites eat through wood framing, it causes the structure to shift slightly. This makes doors and windows suddenly hard to open or close. Many homeowners blame humidity changes, but persistent sticking should be investigated.
Sign 2: Bubbling Paint or Blistered Floors
Termites carry soil and moisture into the wood they’re eating. Paint over that wood can bubble or peel as if there were a leak, and wood floors can show dark spots or blisters, which Virginia Tech lists as a common sign.
Sign 3: Small Pinholes in Drywall
Tiny holes in drywall or plaster with specks of soil around the edge are a subterranean termite sign. Look low on the wall, near baseboards and around window and door frames.
Sign 4: Hollow-Sounding Wood
Tap on wood surfaces around your home, especially baseboards, window frames, and door frames. Healthy wood makes a solid sound. Damaged wood sounds hollow or papery.
Termite Damage vs. Other Wood Damage
A lot of “termite damage” turns out to be something else. Here’s how the four usual suspects compare:
| Feature | Termites | Carpenter ants | Powderpost beetles | Wood rot |
|---|---|---|---|---|
| Tunnels | Layers along the grain | Smooth, clean, empty | Tiny, packed with powder | None; wood breaks down |
| What’s left behind | Dried mud and soil | Coarse sawdust with insect parts | Flour-like powder | Fungus, stains |
| Holes on the surface | Rare; sealed with mud | Slit-like openings | Small round “shot holes” | None |
| Feel | Hollow, papery | Hollow | Crumbly near holes | Soft, spongy or cracked |
Termite Damage vs. Wood Rot
Rot is the look-alike we see most. Daren puts it plainly: “A lot of what gets called termite damage is actually wood rot. That’s a lot of the calls we get.” We don’t treat wood rot. It needs a contractor to find the moisture source, usually a leak. Rot also invites termites, and it’s counted as a wood-destroying condition on an inspection report.
Compare the termite pictures above with this one. Rot has no tunnels and no mud. You get stains, cracking, soft wood and, in bad cases, fungus you can see.
For more side-by-side photos, see termite damage vs. wood rot.
Termite Damage vs. Carpenter Ant Damage
Daren’s rule of thumb: “Carpenter ants leave smooth galleries with nothing in them, because they excavate the frass and carry it out. Termite damage will have mud tube in it, and if it’s old damage, there’s still dried-up mud left in there.” If you’re finding piles of coarse sawdust and big black ants, read our carpenter ant page and carpenter ants vs. termites.
Where to Look for Termite Damage
Based on my years of experience, here are the places where termite damage most commonly shows up in DC area homes:
Crawl spaces - The number one location. Dark, damp, and close to soil. Perfect for termites.
Basement walls and floor joists - Especially where wood contacts concrete.
Exterior door frames - Particularly at the bottom where they meet the threshold.
Window sills - A common entry point, as I mentioned in my Alexandria story.
Wooden decks and porches - Ground contact makes these prime targets.
Garage frames - Often overlooked during inspections.
How Bad Can Termite Damage Get?
Bad enough to replace framing, sills or a whole window, as in Daren’s Kingstowne job. The problem is time. Nobody can tell you from a photo how long termites have been in a wall, and they work where you can’t see.
The University of Kentucky notes that subterranean termite colonies can contain many thousands of termites foraging in many directions, and that infestations can go undetected for years behind walls, floor coverings and insulation. Virginia Tech adds that most people don’t find out until damage shows or the termites swarm.
If you’re pricing out repairs, our termite damage repair guide walks through what’s usually involved.
What to Do If You Find Termite Damage
If these termite damage pictures look familiar, here’s what I recommend:
- Don’t panic, but don’t ignore it either
- Document what you’ve found with photos
- Avoid disturbing the area - this helps professionals assess the situation
- Contact a licensed pest control company for a professional inspection
A proper termite inspection will determine the extent of damage and the best treatment approach. For active infestations, we typically recommend either the Sentricon baiting system for ongoing protection or targeted liquid treatments with products like Termidor for severe cases.
Preventing Future Termite Damage
The best approach to termite damage is preventing it in the first place. Here are my top recommendations:
Reduce wood-to-soil contact - Keep mulch, firewood, and debris away from your foundation.
Control moisture - Fix leaky pipes, ensure proper drainage, and ventilate crawl spaces.
Schedule annual inspections - Professional eyes catch problems you might miss.
Consider proactive treatment - Baiting systems like Sentricon work year-round to eliminate colonies before they cause damage.
For more prevention tips, check out our termite prevention guide.
Get Professional Help
If you’ve seen termite damage that looks like the pictures in this guide, it’s time to call a professional. At Better Termite & Pest Control, we’ve been helping homeowners in Virginia, Maryland, and DC protect their homes for over 58 years. Our team has 300+ years of combined experience, and we’re Certified Sentricon Specialists.
Whether you need an inspection, treatment, or just want to ask questions, we’re here to help. Call us at 703-683-2000 or email us at info@bettertermite.com. We’ll give you honest answers about what you’re dealing with and your best options.
