Mold & Wood Rot Remediation in Columbia, TN
Treat what has already grown on the framing, and cut out what is too far gone, before the space is closed up.
Sustained humidity is enough on its own. Wood under a crawl space in this climate will grow something without ever seeing liquid water, and once a joist has stayed above roughly twenty percent moisture content for long enough, the question stops being cosmetic. Remediation cleans or treats the affected framing and removes material that has lost structural value.
Doing this without fixing the moisture is paying twice for the same work. The growth returns because nothing about the conditions changed, which is why it belongs inside a moisture plan rather than sold as a standalone visit. If someone offers to treat your joists and says nothing about where the water is coming from, that is the tell.
Typical cost: $1,800 - $7,000 depending on affected area and how much framing has to come out

When crawl space mold and rot treatment is the right call
- White, gray, green or black bloom on joists, girders or the subfloor
- A musty smell in the rooms above that gets stronger near floor vents
- Wood that gives under a screwdriver at the ends of joists or at the sill
- A home inspection report flagging fungal growth in the crawl space
Other services
Common questions
Is the black growth on my joists dangerous?
Nobody can identify a species from a photo or from its color, and for the purpose of deciding what to do it does not matter. If identification matters for a sale or a health question, pay for a sample. If it is growing, the space is too wet, and that is the finding that drives the work.
Can it just be sprayed and sealed over?
Sealing over live growth does not kill it. Treatment comes first, and the moisture that fed it has to be gone, or the liner simply gives it a darker place to keep going.
When does framing have to be replaced rather than treated?
When it has lost strength. Surface growth on sound wood is treatable. Rot that a probe sinks into, especially at joist ends and the sill plate, is a repair, not a cleaning.
Get a quote on your crawl space
Call and tell us what is going on with your crawl space and where the property is. You will get a straight answer on what it actually needs, from a licensed contractor working Rutherford County.
Call (629) 258-8347