Waterproofing & Crawl Space Repair in Knoxville, TN
Crawl spaces under every kind of Knoxville house
Knoxville covers a lot of ground, and the crawl spaces under it cover a lot of history. Older houses near the river still stand on block piers laid generations ago. Newer subdivisions on the edges of the city have poured footings and a thin sheet of plastic that went down the week the house was framed. Waterproofit TN works under both. We're a short drive down Norris Freeway from our base in Powell, so a Knoxville estimate is free and carries no travel charge. One trip covers the whole space: drainage, the sump, piers and girders, vents, the vapor barrier, and whether sealing it up makes sense for your house.
Knox County. We cover ZIP codes 37902, 37909, 37912, 37914, 37915, 37916, 37917, 37918, 37919, 37920, 37921, 37922, 37923, 37924, 37931, 37932 and 37938.
- Free estimate
- No travel charge
- Licensed & insured
- Workmanship warranty
Ground conditions
Knoxville sits in the Valley and Ridge, on limestone bedrock full of sinkholes, springs and solution channels.
The rock under Knoxville is Valley and Ridge limestone. Over a very long time it dissolves along seams and leaves channels, springs and the odd sinkhole. Rain that soaks in beside your foundation can ride one of those seams and come up somewhere you'd never guess, so the puddle under the kitchen may have started at a downspout on the far wall. It's also why a crawl space that stayed dry for years can take water after one hard spring storm. Most Knoxville calls start with a musty smell, standing water after rain, or an inspector's note about a pier or the plastic.
Sudden water intrusion
Solution channels in limestone can deliver storm water to a foundation with almost no warning.
Sinkholes and localized settling
Voids in soluble bedrock let soil migrate downward, dropping piers and footings unevenly.
Shallow bedrock
Thin soil over rock limits how deep a drain line can go and changes where the water can be sent.
Services
What we do in Knoxville
Waterproofing in Knoxville
Stop water getting in, and move the water that is already there back out.
See waterproofing in knoxvilleCrawl Space Repair in Knoxville
Steel supports on proper footings, sealed foundation vents and an access door that closes: the parts of a crawl space that fail first.
See crawl space repair in knoxvilleCrawl Space Encapsulation
Seal the ground off, then keep the air under there dry for good.
See crawl space encapsulation
What we get called for
Twelve signs we see in Knoxville crawl spaces
Pick whichever sounds like your house. Each one links to the repair that usually solves it.
- 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
How a Knoxville job runs
- 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 Knoxville 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.
Knoxville questions
What homeowners ask us
My house is on the south side of Knoxville, across the river from you. Is that too far for a free estimate?
No, all of Knoxville is in our regular area. The estimate is free, there's no travel charge, and we book them Monday to Friday between 9am and 5pm.
Our Knoxville crawl space stayed dry for ten years and then flooded after one spring storm. How does that happen?
Knoxville sits on limestone that's full of seams and channels, and water follows them. A heavy storm can fill a channel that rarely carries anything and push water into a crawl space that has never seen it. We trace where it's actually coming from before we suggest a drain, a sump or simple gutter work.
I'm selling my Knoxville house and the buyer's inspector wrote up moisture in the crawl space. Can you look before closing?
Yes. We'll go under the house, tell you plainly what's causing the moisture, and put a written price on the fix that you can share with the buyer. If the honest answer is a gutter or grading problem, we'll say so.
We're buying an older Knoxville home and two of the block piers have wood shims jammed on top. Should that scare us off?
Shims are common under older Knoxville houses and they usually mean a pier settled or the girder sagged. We can replace a failed pier with an adjustable steel jack on a proper footing and bring the girder up gradually. If the ground under it is wet, that has to be handled too or the new support settles the same way.
Neighbors in Knoxville keep talking about encapsulation. Is that something every house needs?
No. Encapsulation means a reinforced liner on the ground and walls, sealed seams, closed vents and a dehumidifier holding the space around 50 to 55 percent. It works well once water is under control, so we look at drainage first and tell you if a new vapor barrier alone would do the job.
There's a musty smell in our Knoxville living room that gets worse every summer. Could it be coming from under the house?
Very often, yes. Warm summer air comes in through open vents, hits the cooler crawl space and leaves moisture on the wood and insulation, and that air drifts up into the house. We don't do mold remediation, but we can fix the moisture that feeds the smell.
Water is pouring into my Knoxville crawl space right now. How quickly can someone come?
We work Monday to Friday, 9am to 5pm, and we don't run an after-hours service. Call 865-503-5483 and tell us water is actively coming in, and we'll fit you in as early as we can.
If I text photos of my Knoxville crawl space, can you give me a price?
Photos help us prepare, but we don't quote over the phone. The on-site estimate takes about an hour and you get a written price before any work starts. First-time customers get 10% off and financing is available.
My Knoxville address is inside city limits. Does the work need a permit from the city?
Most crawl space work doesn't touch anything that needs one, but it depends on the job. For addresses inside the city, permits run through the City of Knoxville, and we'll talk through it at the estimate.
Our Knoxville house has a dead sump pump, a sagging girder and torn plastic. Can one company handle all of it?
Yes, that's exactly our kind of job. We do drains, sumps, steel support jacks, vents, access doors, vapor barriers and encapsulation. We don't do foundation walls, basements, framing replacement or mold remediation, and we'll tell you who to call for those.
Typical prices for every service are in the crawl space cost guide, and more answers are on the FAQ page.
Nearby
We also cover these towns
Our trucks are in Knox County and the counties around it most weeks, so these towns are already on the route. All of Knox County.
Get it looked at while it's small
Damp ground under the house today is damaged framing and bad air upstairs in five years. The estimate in Knoxville costs nothing and takes about an hour.