Crawl Space Waterproofing
If there's actual water under your house — standing water, mud, a tide line on the piers, pooling every time it rains — you don't have a humidity problem. You have a water problem, and the two get fixed differently. We waterproof crawl spaces across metro Atlanta: we follow the water to where it's getting in, move it out, and keep it out, so the space stays dry instead of going wet again with the next storm. We're Crawl Daddy. We go under the house, find the source, and tell you straight what it takes to stop it.
Waterproofing, the straight version
Here's the straight answer almost everyone gets stuck on. Waterproofing is for active water — water that pools, runs, or stands under your house — and the fix is drainage: an interior drain, a sump pump, and grading. Encapsulation is for moisture — damp air, humidity, that musty smell — and the fix is sealing: a vapor barrier, closed vents, a dehumidifier.
Here's the rule that matters: if you have active water, you waterproof first. Sealing a wet crawl space in plastic just traps the water against your foundation and makes things worse. Once the water's controlled and the space is dry, encapsulation is the finishing step that keeps it that way. Plenty of crawl spaces need both, in that order — and we'll tell you honestly which one yours needs right now instead of selling you the one with the bigger ticket.
You can see it, not just smell it. The tells: standing water or puddles after rain, a water line or mud on the piers and vapor barrier, a sump pump that runs constantly or has quit, and water running in from a wall or footing during a storm. If it's wet enough to see, that's water — and that's this page.
Damp air, condensation, and a musty smell with no visible water are a different animal — that's a moisture problem, and the fix is encapsulation, not drainage. When the water has sat long enough to rot joists or sag the floor above it, that crosses into crawl space repair. We sort out which of these you're actually dealing with before we quote a thing.
You give the water a path out and a place to go. We dig in an interior drain along the footing that catches water as it enters, route it to a sump basin, and a sump pump carries it up and away from the house. Outside, we correct grading and downspouts so less of it ever reaches the crawl space.
That's the whole logic of a waterproofed crawl space — collect, pump out, and reduce the supply. It's a system working together, which is why a shop vac and a fresh roll of plastic never hold up past the next hard rain. The itemized pieces of that system are below in what we install.
It comes down to our soil. Atlanta sits on red clay, which holds water and drains slowly. After a hard rain the clay around your foundation saturates and builds pressure, pushing water through any gap, crack, or low spot into the crawl space. With nowhere to go, it pools under the house and sits there for days.
Older homes feel it worst. A lot of places around Decatur, Kirkwood, Grant Park, and out through Marietta went up decades ago with no interior drainage and grading that's since settled toward the house. They were never set up for what our clay does after a storm. We've spent enough time under Atlanta-area homes to know where your neighborhood's water tends to come from — and the fix is drainage that gives it an exit, paired with grading so less of it ever arrives.
It depends on how much water you've got and where it's coming from, so we won't pin a one-size number on a job we haven't seen. A seasonal damp spot needing a short run of drain is a different scope from a crawl space that floods every storm. The things that move the number:
| What affects the price | Why it moves the number |
|---|---|
| Linear feet of interior drain | More perimeter to protect means more drain to install. |
| Sump pump — new vs. replacement | A full basin and pump is more than swapping a failed unit. |
| Exterior grading and downspout work | Correcting the outside source adds scope beyond the drain. |
| Severity and source of the water | A wet corner vs. a crawl space that floods are different jobs. |
| Access | A tight, low crawl space is slower and harder to work in. |
The free inspection is where you get a real figure. We go under, find where the water's actually coming from, and put the scope and the price in writing before you commit to anything. If it's a bigger project, we offer interest-free financing so you can spread it out, and every repair we make carries a 2-year warranty. If sealing comes after — encapsulation runs about $5 to $7 per square foot once the space is dry — we'll scope that with you too, in the right order.
How It Works
We keep the process simple and transparent so you know exactly what to expect before anyone starts work.
We evaluate the crawlspace or basement and document what we find with photos and moisture readings.
We review moisture levels, drainage, and structural integrity to understand the full picture.
You receive a practical proposal tailored to your property. No jargon, no pressure, no surprises.
Our team performs the work and walks you through the result so you see exactly what was done and why.
What We Install
Waterproofing is a system, not a single product. Here's each piece and what it's actually for.
A drain set at the footing line catches water before it can pool, paired with drainage matting where it helps route water to the drain. This is what collects everything that makes it under the house and carries it to one place instead of letting it spread across the dirt.
A properly sized sump basin and pump move the collected water up and out, away from the foundation, instead of letting it sit. We install dependable systems and replace failing or undersized ones before the storm you actually need them in — a pump that quits mid-flood is worse than no pump at all.
A lot of crawl space water starts as a yard problem — downspouts dumping at the foundation, or grade that slopes toward the house. We correct what we can outside so the drainage inside isn't fighting a losing battle against water that never should have reached the footing.
Drainage manages the water; sealing keeps the space dry long-term. Once the crawl space is staying dry, encapsulation — a vapor barrier, sealed vents, and a sized dehumidifier — is the finishing step. We handle the water first and never seal over a problem to make a sale.
Real Atlanta crawl spaces we've dried out
Homeowner Proof
Extremely happy and grateful for the service I received. They came out the same day I called for an estimate and provided it right away. I loved the entire experience, and would definitely recommend them and use them again.
Frequently Asked
Don’t Wait Until It’s Major
Schedule a crawlspace or basement evaluation and understand what needs attention — no pressure, no obligation.
Free & No Obligation
Tell us what’s happening under the house. We’ll follow up within one business day.