Tacoma gets a lot of rain, and that makes wood in Tacoma homes a target for anything that eats or nests in it. Termites in western Washington are different from the ones in Texas or Florida: colonies are smaller, they are tied to moisture, and the species most likely to be found are dampwood termites. Still, an inspection can save you from a costly surprise, and it helps separate termites from carpenter ants and fungal rot.
Which termites live here
Pacific dampwood termites are the largest termites in North America. They colonize very wet, decaying wood, such as fallen logs, stumps, rotting fascia or buried timbers. Swarmers are large and brownish with long wings, and they typically appear in late summer and fall. Western subterranean termites are rare in the Puget Sound lowlands but have been found in some locations, usually where wood touches soil. Drywood termites are not a normal feature of the region. Because dampwood termites need wet wood, they are less likely to attack sound, dry framing, so fixing moisture is the crucial step.
Why Tacoma wood is at risk
The city's steep hillsides funnel runoff toward foundations. Older houses in the Stadium District, North End and Hilltop often have wood sills close to the ground, porch posts embedded in soil and original wooden window frames. Poorly sealed deck ledgers and leaking gutters wet the wall base for months. Crawl spaces with torn vapor barriers hold humidity, and moss on roofs retains moisture against shingles and fascia. Tall evergreens and shaded yards keep ground damp even in the dry months, and landscape timbers or old stumps next to a house are classic nesting spots.
How to read the evidence
- Large winged insects emerging in late summer, especially near lights.
- Smooth, clean galleries in damp wood, with pellets packed in small chambers.
- Soft, darkened wood that crumbles, which often means rot even if no insects are present.
- Mud-like material in galleries suggests subterranean species.
- Frass piles under a beam point more to carpenter ants than to termites.
What inspection and treatment look like
An inspector checks the crawl space, basement sill plates, deck connections, fascia, window sills and attic, probing wood and using a moisture meter. For dampwood termites, the most effective measure is eliminating moisture and removing or replacing damaged wood, sometimes accompanied by a localized treatment. Subterranean colonies require soil treatment or baits. Carpenter ants, if that is the culprit, get a different approach with baits and nest treatment. If rot is the main issue, a carpenter or contractor does the repair. A reputable provider will tell you which problem you actually have instead of selling treatment you do not need.
Protecting a damp-climate home
- Keep gutters and downspouts clear and discharge water well away from the foundation.
- Maintain at least six inches of clearance between soil and wood siding.
- Replace any rotted trim, sills and deck boards.
- Ventilate crawl spaces and repair vapor barriers.
- Remove stumps, firewood stacks and scrap lumber near the house.
Reach a Tacoma provider
If you have found damaged wood or winged insects, call (844) 725-1661. PestMinistry is a referral service, not a termite company; we connect you with an independent licensed provider serving the Tacoma area who can inspect and explain what is happening.
Are termites a big problem in Tacoma?
Less so than in warmer parts of the country, but moisture-damaged wood can still attract them.
How do I distinguish dampwood termites from ants?
Termites have straight bodies and antennae; ants have a pinched waist and elbowed antennae.
Does roof moss mean termite risk?
Moss indicates persistent moisture, which can lead to wood decay and attract pests.
Do I need a termite bond?
Often not for this region, though an inspection before buying a home is a smart idea.