Basement Mold Removal in Knoxville, TN
Knoxville Superior Mold Remediation does basement mold removal in Knoxville for finished and unfinished basements. We cut out moldy drywall, carpet pad and insulation, clean and treat block walls and framing, dry the room, and put in interior basement waterproofing when water keeps finding its way through the wall or the floor. Find the water first. Otherwise you pay for the same cleanup twice.
We do basement mold remediation in Knoxville and nearby towns including Alcoa, Clinton, Maryville, Powell and Oak Ridge. The basement corner nearest the downspout is where we find it most. When the water came from a burst pipe or a flood, our water damage mold remediation starts with drying.
Types of Basement Mold Remediation We Do
Basement mold depends on two things: whether the room is finished, and where the water gets in. We've seen both ends of it.
Finished Basement Mold Removal
In a finished basement, mold hides behind drywall, under carpet and in the bottom plate of the walls. We take readings first and open only where they're high, then cut the drywall back to clean board. On a Fountain City job last year that meant 8 feet of wall and the carpet pad, not the whole room.
Mold on Block Foundation Walls
Concrete block wicks water out of the clay like a sponge. You see a white powder, called efflorescence, and dark mold on the paint or on boxes stored against it. We clean the block and treat it, then deal with the water, because the block will keep wicking.
Basement Carpet and Floor Mold
Carpet pad soaks water up like a sponge, and once it's moldy there's no cleaning it. We pull it, clean the slab under it and dry the concrete before any new flooring goes down. We've lifted carpet that looked fine on top and was black underneath.
Mold After a Basement Flood
After a flood or a sump pump that quit, the EPA says to dry everything within 24 to 48 hours. That clock is real. We extract the water, dry the basement with dehumidifiers and moisture mapping, and remove anything that already started to grow mold.
Interior Basement Waterproofing
An interior French drain is a gutter under the basement floor: a perforated pipe in a trench along the floor edge. With weep holes drilled in the bottom of block walls, it carries water to a sump pump before it reaches the room. We install these as part of about 150 mold jobs a year when the wall keeps leaking.
Basement Humidity Control
Some basements never leak. They're just damp, especially in August. A dehumidifier set to keep humidity under 60 percent, as the EPA recommends, is often the whole fix once the cleanup is done. We'll tell you when that's all you need.
Why Knoxville Homeowners Choose Us for Basement Mold
- Moisture readings on every wall before anything gets cut
- Containment so basement dust stays in the basement
- Mold removal and the drain from the same small crew
- HEPA air scrubbers, then a post-remediation evaluation
- We show you the gutter or grade problem outside too
- Free inspection and a written quote first
Towns we cover from Knoxville
Containment on every job
Plastic walls, HEPA air scrubbers, a final check
How Much Does Basement Mold Removal Cost in Knoxville?
Basement mold removal usually costs $1,500 to $6,000 for part of a basement and up to $15,000 for a whole basement, according to HomeGuide's 2026 guide. One corner costs at least $500. Interior basement waterproofing is priced separately, at $6,000 to $12,000 on average.
| Item | Typical price | Source |
|---|---|---|
| Basement mold removal, partial | $1,500 to $6,000 | HomeGuide, 2026 |
| Basement mold removal, whole | $6,000 to $15,000 | HomeGuide, 2026 |
| Drywall removal and replacement area | add $500 to $2,000 | MoldGuide Knoxville, 2026 |
| Interior basement waterproofing | $6,000 to $12,000 | HomeGuide, 2026 |
| Sump pump installation | $600 to $2,500 | HomeGuide, 2026 |
| Basement dehumidifier, installed | $1,100 to $2,800 | HomeGuide, 2026 |
Those are published ranges, so you can tell a fair price from a silly one. Your written quote comes after we take readings, and it lists every wall section we plan to open. We've been doing basements in Knoxville for 30 years, and the number on paper is the number you pay unless we find something new behind the drywall, and then we call you first.
Why Knoxville Basements Get Mold
Knoxville gets just under 52 inches of rain a year, and most of the area sits on clay that holds that water against the foundation. Water pushes through block walls and the joint where the wall meets the floor. We've watched a single clogged gutter flood one basement corner in one storm. Downspouts matter more than people think.
How We Remove Basement Mold
- Find the water: moisture readings and a look at gutters and grading outside.
- Contain: plastic walls and a HEPA air scrubber.
- Remove: moldy drywall, carpet pad and insulation.
- Clean and treat: block walls and framing.
- Dry: dehumidifiers until readings are back to normal.
- Stop the water: an interior drain, a sump pump or a dehumidifier, as needed.
Basement Mold FAQ
Why does my basement smell musty?
A musty smell in the basement means something is staying damp, often behind drywall, under carpet or in cardboard boxes against the wall. Sometimes it's just high humidity. We map the moisture to find out which. Keeping humidity under 60 percent and fixing leaks usually ends the smell within a few weeks.
Can you remove mold from basement block walls?
Yes. Concrete block isn't food for mold, but the dirt, paint and stored boxes on it are. We clean the block and treat it, then deal with the water coming through, because a block wall that stays wet grows it right back. We've cleaned the same wall twice for people who skipped the second step.
Do I need waterproofing after basement mold removal?
Only if water is still getting in. If the mold came from one burst pipe, removal and drying is enough, and we'll say so. If the wall gets wet every time it rains, an interior drain or better gutters and grading keep you from paying for the same cleanup twice.
How long does basement mold removal take?
Most basement mold jobs take us two to three days, drying included. An interior drain adds two to four days. Finished basements take longer because walls have to be opened, and the rebuild afterward is your contractor's job, not ours.
Will insurance cover mold in my basement?
Insurance usually covers basement mold only if it came from a sudden covered event like a burst pipe. Mold from groundwater or flooding usually isn't covered without separate flood coverage. Your adjuster decides. We provide photos and readings for the claim.
Smell It but Can't Find It? Start With a Free Inspection.
Tell us where you see it or smell it and roughly how old the house is. We find the water first, then give you a written quote.
Or call (865) 321-4111