Basement wall system
Basement wall system in Louisville, KY
A liner over the basement walls, sealed at the top, that sends any water coming through the block down into a perimeter drain and out through a sealed sump. The wall can be wet; the room stays dry.

Signs you need it
What a wet basement wall looks like
White powder on the block
Efflorescence is minerals left behind by water moving through the wall. It means the wall is wet inside.
Damp or dark stains low on the wall
Staining on block is the wall telling you it has been wet on the inside.
Paint that bubbles and peels
Waterproof paint holds until the pressure behind it is greater than the bond, then it lets go.
Cracks that weep
Poured walls crack as they cure and settle. Under pressure, the crack becomes a pipe.

What we do
The wall is covered, the water is collected, the sump carries it out
A basement wall system is the wall part of our interior basement waterproofing. The walls are covered with a liner, sealed at the top and fitted around pipes, posts and fixed equipment. Water that comes through the block runs down behind the liner into perforated drain tile set in washed gravel at the footing, and the drain carries it to a sealed sump basin and pump that sends it outside.
A liner on its own, with nowhere for the water to go, is not the job. That is why the wall system is always tied into the perimeter drain. When the whole room gets the treatment, walls, drain, sump and a sealed floor, we call it basement encapsulation. Where the wall itself is failing, exterior foundation waterproofing fixes it from the outside.
- Wall liner sealed at the top, fitted around utilities
- Perimeter drain tile at the footing behind it
- Sealed sump basin, pump and proper discharge
- Lifetime transferable warranty on our work
On our YouTube channel
From a Watertight job
A short clip from the crew, posted on our YouTube channel.
How the job goes
Part of a two to three day basement job

Inspect
We find where the water comes through, check the grading and downspouts outside, and photograph every wall.

Open the floor edge
The perimeter is cut open so the drain can sit at the footing, below the bottom of the liner.

Drain and liner
Drain tile and gravel go in, the liner goes up the walls and is sealed at the top, the sump is set.

Close and finish
New concrete over the channel, the discharge run outside, the site cleaned.
Before and after
One Louisville wall, before and after
Before and after from the same job. Drag the line.


On the job
From the crew's own photos
Real Watertight jobs. Nothing staged, nothing stock.








What it costs
Price your basement wall system in a minute
A few questions give a planning range from the same calculator as the cost guide. See every line, or book a free inspection with your numbers attached.

Why Watertight
A liner is only as good as the drain behind it
We install the wall system and the drainage together, with our own crew, and photograph every stage, so you can see the liner is tied into the drain before the floor is closed.
- Liner fitted around pipes, posts and fixed equipment
- Sump pump with sealed lid; battery backup available
- We beat any reputable company's price on the same scope
a week agoZach and his team did an amazing job. Came out fast to give me a quote. Once I was ready he was able to work with me and take on a few hurdles that wasn’t expected. My crawl space looks amazing! I feel much better being in my house knowing mold has been…
a week agoI can’t say enough how much I recommend this company. The whole time everyone was helpful and willing to answer any question we had. The work took less than two days. We had other estimates for our crawl space, with lower grade materials. WaterTight saved…
2 weeks agoSeriously couldn’t be more pleased with our results. The team came in, worked so hard, got the job done so efficiently and were super polite and helpful. I will continue to recommend to my clients in real estate as we see our fair share of bad crawlspaces…
Questions
Basement wall system: what people ask
Still have a question? Call the office, Monday to Saturday, 9:00 AM to 5:00 PM.
How much does a basement wall system cost?
It is priced by the length of wall that gets liner and the drainage that goes with it. Every job is priced in writing after a free inspection, and the cost guide has typical Louisville ranges and a calculator for planning.
Can I just seal the walls with paint instead?
Waterproof paint holds back water until the pressure behind it is greater than the bond, then it peels. It treats the symptom. A liner tied into a drain relieves the pressure, which treats the cause.
Does the liner work without a drain?
No. The liner only sends the water down. The perimeter drain and the sealed sump are what carry it out of the basement, so they go in with the wall system.
What is the difference between a wall system and basement encapsulation?
The wall system is the liner and the drain behind it. Basement encapsulation is the whole room: lined walls, drain, sump and a sealed floor.
Is the warranty transferable?
Yes. The lifetime warranty on our work transfers to the next owner when you sell. The warranty page explains how it works.
Do you do this outside Louisville?
Yes. We are based in Louisville and work across Jefferson County, the surrounding Kentucky counties and southern Indiana. The service areas page lists every town we cover.
Projects
Real jobs, before and after
Each pair is one Watertight job, photographed before and after. Nothing staged, nothing stock.

A basement corner, mid-job and finished
A corner caught mid-job with a saw and a hammer on the floor, finished in white liner over a dark floor.
Read the story
Torn plastic replaced with a sealed liner
Torn, bunched plastic over bare dirt, replaced with one continuous liner turned up the wall.
Read the story
A cluttered crawl space, cleared and lined
A flexible duct lying on old sheeting and debris, then lifted clear over a clean liner across the floor.
Read the storyWhere we do this work
Basement wall system across Louisville and Kentuckiana
Every area has its own page on the houses and ground in that part of town.
Free estimate
Basement wall system: get a written price
Tell us what you are seeing. A technician calls back during business hours and books a time to look. No cost, no obligation.
- Photos and a plain explanation of the cause
- Written scope and price
- Our own crew, not a subcontractor
- We beat any reputable company's price on the same scope


