Waterproofing & Crawl Space Repair in Knoxville, TN
Crawl space waterproofing, encapsulation and repair
Standing water, damp ground, musty air and floors that have started to give. Fixed at the source by our own crews, working out of Knoxville across 6 East Tennessee counties.
- Free on-site estimates
- Licensed & Insured
- Workmanship Warranty
- Locally owned
- Licensed & insured
- Workmanship warranty
- Free on-site estimates
What we do
Three systems, one crawl space
Water gets in, moisture stays in, and eventually the framing pays for it. Each of these handles one part of that chain. Most houses need two of the three, and the estimate tells you which.
Waterproofing
Stop water getting in, and move the water that is already there back out.
- Interior French Drains
- Exterior French Drains
- Sump Pump Installation
- Sump Pump Repair
- Water Diverters
- Grading & Downspouts
Crawl Space Encapsulation
Seal the ground off, then keep the air under there dry for good.
- Full Encapsulation
- Vapor & Moisture Barriers
- Dehumidifiers
- Crawl Space Insulation
- Humidity Control
- Air Quality
Crawl Space Repair
Steel supports on proper footings, sealed foundation vents and an access door that closes: the parts of a crawl space that fail first.
Explore crawl space repair
30-second self-check
What is your house trying to tell you?
Pick whichever you notice most. Each one goes straight to the repair that usually solves it under an East Tennessee home.
- Standing water in the crawl space after rain
- A sump pump running constantly, or not at all
- Damp block walls or white mineral staining
- Water running in from one wall or corner
- A musty smell that never quite leaves
- Open or broken foundation vents on a damp crawl space
- Condensation on ductwork or pipes
- Torn or missing vapor barrier on the ground
- Insulation sagging or falling off the joists
- Water running in at the crawl space access after rain
- Soil that never dries out under the house
- Humidity upstairs you can't get rid of
How it works
Four steps, no surprises
- 01
You call, we schedule
A real person at our Powell office answers, Monday to Friday, 9 to 5. You get a callback the same day you ring.
- 02
Free on-site estimate
An estimator walks the property, inside and out: crawl space, grading, gutters, the lot itself. Expect an hour, and expect to be shown what he is looking at.
- 03
A written price, explained
Scope, method and cost in writing before anyone starts. No pressure to sign on the spot, and no quotes over the phone.
- 04
Our crew does the work
We clean up behind us, and we stay in constant communication with you until the job is done.
Why homeowners choose us
A specialist beats a generalist under a house
Plenty of contractors will do crawl space work between other jobs. It is the only thing we do. Our crews are under East Tennessee houses every working day, and they know what the ground does here.
Our own crews on every job
The people who quote the job are the people who do it, and we stay in constant communication with you until it is done.
A written price before anyone starts
Scope, method and cost in writing. No pressure to sign on the spot, and no quotes over the phone.
Local, and staying that way
Locally owned, 5 years in East Tennessee, working out of 9109 Norris Fwy in Knoxville.
Workmanship warranty
Our work carries a workmanship warranty, and the materials we install carry the manufacturer’s own coverage. The exact terms depend on the scope of your project, and they are written on your estimate before you sign anything.
What it costs
Typical East Tennessee price ranges
Most crawl space jobs around Knoxville land inside these typical ranges. Where yours falls depends on the size of the crawl space and what is actually causing the water, which is what the free estimate is for.
| Service | Typical range |
|---|---|
| Full crawl space encapsulation | $5,000–$12,000 |
| Vapor barrier only | $1,500–$4,500 |
| Crawl space dehumidifier | $1,000–$2,500 |
| Crawl space insulation | $1,000–$3,500 |
| Interior French drain | $25–$35 / linear ft |
| Exterior French drain | $3,000–$6,500 |
| Sump pump installation | $800–$2,000 |
| Sump pump repair | $300–$600 |
| Underground downspout line | $200–$2,000 per downspout |
| Regrading around the house | $1,000–$3,300 |
| Crawl space support jacks | $1,000–$1,600 each |
| Sealing foundation vents | $150–$450 |
Where we work
6 counties, 50 towns
Anderson, Blount, Campbell, Knox, Sevier, Union, with 58 ZIP codes in all. There is no travel charge anywhere in that area, and the estimate is free whether you are ten minutes from the office or an hour out.
See every town we coverOur base: 9109 Norris Fwy, Powell, TN 37849
Common questions
Before you call
Who should I hire for waterproofing in Knoxville, TN?
Waterproofit TN is a locally owned crawl space specialist on Norris Freeway in Powell, licensed and insured, and our own crews handle waterproofing for Knoxville homes. We trace where the water gets in first, because on Knoxville limestone it often surfaces far from where it entered, then fix it with grading, downspout lines, French drains or a sump pump. The on-site estimate is free with no travel charge, and the work carries a workmanship warranty.
Who should I hire for crawl space repair in Knoxville, TN?
Waterproofit TN repairs crawl spaces across Knoxville with our own licensed and insured crew, after about five years of work under East Tennessee houses. We replace settled or shimmed piers with adjustable steel support jacks on proper footings, repair foundation vents, fit insulated access doors and put down new vapor barrier. You get a written price after a free on-site estimate, and first-time customers get 10% off.
We've got family coming in a few weeks. How long will the work take?
Most jobs run one to three days. A straightforward sump pump or a barrier can be a single day; a full encapsulation with drainage and structural repairs takes longer. You get the expected timeline in writing with the estimate.
Who fixes a wet crawl space in Knoxville, TN?
Waterproofit TN fixes wet crawl spaces all over Knoxville, starting with a free on-site look at the gutters, the grading and the crawl space itself. Depending on what we find, the fix is an interior or exterior French drain, a sump pump, new downspout lines, or a sealed liner with a dehumidifier once the water is handled. Every price is in writing before work starts, and financing is available.
Who do I call when my crawl space floods in Knoxville, TN?
Call Waterproofit TN at 865-503-5483, tell us water is coming into your Knoxville crawl space now, and we will fit you in as early as we can. Our own crew goes after the source of the water with French drains and sump pumps sized to it, with the price in writing after a free on-site estimate. While you wait, move anything stored on the dirt and keep the downspouts pointed away from the house.
I've never had anyone look under my house before. Where do I even start?
Start with a phone call to 865-503-5483 and tell us what you've noticed, like a smell, soft floors or water after rain. We'll set up a free on-site estimate, crawl under the house and show you what we find. You get a written price before any work is agreed.
Something's off under my floors but I can't tell if it's water, sagging or humidity. Who should I call first?
You can call us for all three, since crawl spaces are our whole business. At the estimate we look at the water, the supports and the air together, because they usually feed each other. Then we tell you which problem to fix first and which ones can wait.
I'm worried a contractor will crawl under there and find a long list of things to sell me. How do you handle that?
We point out what we see and tell you plainly what matters now and what can wait. Sometimes the honest answer is cleaning gutters or fixing the grading, and we'll say so. Everything we recommend goes on a written estimate you can take your time with.
My schedule's tight during the week. When can someone actually come look at the crawl space?
Estimates are booked Monday to Friday, 9am to 5pm. Call and we'll find a slot that works, and you can tell us if you need someone home or just want a call when we're done. A visit usually takes about an hour.
I just bought an older house and I'm told crawl spaces around here all have problems. Is that true?
Plenty of East Tennessee crawl spaces are damp, especially over the limestone ground around Knoxville where water moves through seams in the rock. That doesn't mean yours needs big work. A free look will tell you where it actually stands.
More on the full FAQ page.
Get it looked at while it is small
Damp ground under the house today is damaged framing and bad air upstairs in five years. The estimate costs nothing and takes about an hour.


