Basement & Crawl Space Waterproofing in Atlanta, GA
Stop the Water, Dry the Space and Protect the House Above It.
Basement waterproofing, French drains, sump pumps and crawl space encapsulation across metro Atlanta, starting with where the water is coming from and backed by a free, detailed estimate.
Basement Waterproofing in Metro Atlanta
Basement waterproofing keeps groundwater and rain out of your basement or crawl space by sealing the foundation, draining water away from it and controlling moisture inside. A dry foundation protects the framing from rot, keeps mold from taking hold and makes the space usable for storage or living. JMJ Construction Group waterproofs basements and crawl spaces across metro Atlanta.
Water in a basement almost always has a path, whether it's a clogged gutter, soil that slopes toward the house or pressure from wet ground pushing through the walls. We trace that path before recommending a fix, so you pay for what solves the problem. Once the space is dry, we can also finish it with our basement finishing services.
Our Recent Waterproofing Work
See the Work Behind Our Name
Browse finished kitchens, bathrooms, decks, exterior renovations and new homes built by our team, with the scope of each project and photos of the results.
Signs of a Moisture Problem
Water damage builds slowly. These signs mean it's time for a closer look.
- Puddles or damp spots on the basement floor after rain
- White, chalky deposits on concrete or block walls
- A musty smell in the basement or rising from the floors
- Mold, wet insulation or sagging vapor barrier in the crawl space
- Peeling paint or bubbling on lower walls
Basement and Crawl Space Waterproofing Close to Home
JMJ Construction Group is based in Marietta, where heavy rain and clay soil push a lot of water toward foundations. We look at grading, gutters and drainage along with the basement or crawl space itself, so the fix addresses where the water is coming from.
We waterproof basements and crawl spaces in Brookhaven, Alpharetta and Tucker and nearby cities.
Waterproofing Questions, Answered
How much does basement waterproofing cost?
It depends on the cause and the fix. Regrading and extending downspouts costs far less than an interior drain system or exterior excavation. The size of the basement, the foundation type and access around the house all play a part. We inspect first and give you a free, itemized estimate.
Is crawl space encapsulation worth it?
In humid climates like Georgia's, it often is. Sealing the crawl space and controlling humidity helps protect the floor framing from moisture and mold, reduces musty smells and can make floors above feel less damp. Whether it's right for your home depends on the crawl space's condition, which we'll check first.
What's the difference between a vapor barrier and encapsulation?
A vapor barrier is a plastic sheet laid over the crawl space soil to slow moisture coming up from the ground. Encapsulation goes further: a heavier liner covers the floor and walls and is sealed at the seams, the vents are closed, and humidity is controlled with a dehumidifier or conditioned air.
Do I need a sump pump?
If water collects under or around your basement or crawl space and can't drain away by gravity, a sump pump gives it somewhere to go. It's usually paired with an interior drain. If the problem is surface water from gutters or grading, fixing those may be enough.
Are you licensed and insured?
Yes. JMJ Construction Group holds Georgia GC license GCI000260 and carries liability coverage through Next Insurance, with proof available before work begins.
Do you offer free estimates?
Always. We'll inspect the basement or crawl space, explain what's causing the moisture and provide a detailed written estimate at no cost and no obligation.
