Carpenter Ant Infestation
Carpenter ants are attracted to moist or decaying wood, which is often found around homes with drainage or foundation-related moisture issues.
Carpenter Ant Infestation is one of the clearest signs Central Texas homeowners notice when a foundation is on the move. In Central Texas, the cause is usually one of two things: expansive Blackland clay swelling and shrinking under the home with every wet-dry cycle, or the moisture and drainage conditions that come with it. The specific pattern and location of what you're seeing is what tells us which one it is.
Watch for these signs it's more than cosmetic
Sawdust-like material near baseboards or framing
A common sign of tunneling activity in nearby wood.
Visible ants, especially large black ones, near the foundation or crawl space
Activity concentrated near the foundation often points to a moisture source nearby.
A musty smell suggesting damp wood nearby
Odor alongside ant activity strengthens the case for an underlying moisture issue.
What causes this problem?
Not every instance is foundation-related, but in Central Texas, it usually is. Here's what we rule in or out on inspection.
Moisture-softened wood
Carpenter ants tunnel through wood that's already damp or beginning to decay, not sound, dry lumber.
Poor drainage
Water pooling near the foundation keeps nearby wood damp enough to attract activity.
Crawl space humidity
Persistent dampness in a crawl space creates the moist wood conditions carpenter ants look for.
Check your address for soil and flood risk factors
See the USDA soil data and FEMA flood zone for your exact Austin area parcel. No email required.
How QFR addresses this
Why Central Texas foundations move
Austin's expansive Blackland clay shrinks in dry summers and swells after rain, cycling in volume with every wet-dry season. Homes built directly on this clay across Travis, Williamson, and Hays counties face ongoing movement pressure, and that movement shows up in different places depending on the home. We diagnose the pattern before we recommend anything.
"Carpenter ants don't create moisture problems, they move in once one is already there."
The difference is in the diagnosis
Get several quotes and you'll see a wide range of prices. The gap isn't luck, it's whether the contractor finds the actual cause and stands behind the work.
Frequently asked questions
What attracts carpenter ants to homes?
Moist or decaying wood, often tied to drainage issues near the foundation.
Are carpenter ants a sign of wood rot?
Often, yes, they're drawn to the same moisture conditions that cause rot.
Other signs to watch for
Get your free estimate
Tell us what you're seeing. An Austin specialist will reach out to schedule your on-site inspection, usually within one business day.
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