Ever watched water creep into your basement like it’s paying rent? You’re not alone. Every year, thousands of homeowners deal with leaks, mold, and musty smells that seem to come out of nowhere. The solution? Hiring a pro waterproofing company that actually knows what they’re doing.

So if you’re searching for the best waterproofing companies in the USA, this list is your gold mine. We’ve done the dirty work (minus the actual digging) and handpicked five companies based on service quality, customer reviews, experience, and real results. And yes we’re starting with the one company that’s changing the game in New Jersey and beyond.

One Light Contractors (New Jersey)

Website: https://njbrickpointing.com
Headquarters: Newark, NJ
Service Area: New Jersey, parts of New York
Founded: 2005
Specialties: Basement waterproofing, foundation sealing, crawlspace waterproofing, brick pointing

Let’s not beat around the soggy bush One Light Contractors is a local legend in New Jersey. Homeowners call them when it’s flooding, cracking, leaking, or when their basement smells like a forgotten swimming pool. With nearly two decades of experience, this crew has seen everything from water gushing through 100-year-old walls to foundations that looked like Swiss cheese.

They’re known for tackling problems fast and doing it right the first time. The team specializes in foundation waterproofing, crawl space sealing, basement tanking, and brick repointing which is handy for older buildings that look beautiful but leak like a colander.

What really sets One Light apart is how they treat clients. No pushy upsells. No vague advice. They give straight answers, fair prices, and actual long-term solutions. Oh, and if you’re worried about mold? Their waterproofing systems make sure it stays far, far away.

Why customers love them:

• Quick turnaround, even during the rainy season
• Waterproofing jobs come with warranties
• They show up on time (which shouldn’t be rare, but it is)
• Clean job sites you won’t find a single muddy bootprint

Minor downside? They’re so in-demand that you might need to book a week or two in advance. But hey, that’s what happens when you’re great at what you do.

If you live in New Jersey and your foundation’s weeping, call One Light before your basement turns into a koi pond.

Read Also: Best General Contractors in New Jersey

EverDry Waterproofing

Website: everdry.com
Headquarters: Toledo, OH
Service Area: Midwest, Northeast, Southeast
Founded: 1978
Specialties: Interior and exterior basement waterproofing, foundation repair, mold control

EverDry has been sealing basements for over 45 years. That’s almost half a century of trench digging, wall coating, and sump pump installation. They’re one of the largest waterproofing companies in the country, with local franchises scattered across multiple states.

Their dual-stage waterproofing system is what they’re known for. It handles water from both outside and inside your foundation. That means fewer callbacks and fewer soggy carpets in the basement.

Plus, they offer free inspections and not the kind where someone shows up, pokes at your walls, and hands you a quote. Their inspections are detailed, often using moisture meters and infrared scanning. It’s basically a CSI episode, but for basements.

Highlights:

• Available in over 20 states
• Patented systems like “Everdry Multi-Step”
• Lifetime transferrable warranties
• Strong financing options for big repairs

One funny thing? People love their customer service team almost as much as their waterproofing. Friendly, helpful, and weirdly good at explaining sump pump physics to non-engineers.

Basement Systems Inc.

Website: basementsystems.com
Headquarters: Seymour, CT
Service Area: Nationwide (with local dealers)
Founded: 1987
Specialties: Crawl space repair, sump pumps, basement waterproofing, vapor barriers

If you’ve Googled “basement waterproofing,” chances are you’ve seen these folks. Basement Systems has a huge network of contractors across the U.S. all trained under the same umbrella. Think of them like the Starbucks of waterproofing, except instead of coffee, you get dry basements.

Their strength lies in their systems: WaterGuard®, CleanSpace®, and TripleSafe® are some of the industry’s most trusted products. These aren’t gimmicks they’re tested, branded solutions with actual engineering behind them.

They’re especially good for homes with crawl spaces, which can be tricky and gross. If your crawl space has standing water and smells like a wet dog, Basement Systems can make it smell like nothing which is the dream.

Perks:

• Certified dealer network
• Long warranties
• 100,000+ happy customers
• Great educational resources on their site

Just know that prices vary a lot depending on the dealer, so ask around and compare before signing.

Olshan Foundation Solutions

Website: olshanfoundation.com
Headquarters: Houston, TX
Service Area: Southern and Midwestern states
Founded: 1933
Specialties: Foundation repair, drainage, slab solutions, waterproofing

Olshan’s been around so long that they probably waterproofed Noah’s Ark. Kidding. Sort of. With 90+ years in the business, they’ve earned a strong reputation, especially in areas where clay soil and heavy rain tag-team to wreck foundations.

Their Water Lock Plus™ system is designed for deep, aggressive water problems especially in slab foundations or older homes with poor drainage. They also offer hydraulic lifting and soil stabilization, so it’s not just waterproofing it’s full-blown structural rescue.

Good stuff:

• In-house engineers
• Flexible financing
• Strong warranties
• Free inspections

Texas folks swear by them. And if your garage or patio is tilting like the Leaning Tower of Pisa, Olshan’s probably who you should call.

AquaGuard Foundation Solutions

Website: aquaguard.net
Headquarters: Marietta, GA
Service Area: Georgia and surrounding states
Founded: 1995
Specialties: Basement waterproofing, concrete leveling, crawl space encapsulation

AquaGuard focuses on southern homes, especially in humid climates where water damage happens slowly… then all at once. Their team handles everything from wall cracks to standing water in crawl spaces, and they’re really well-rated for their clear explanations and no-pressure sales tactics.

They’re also known for being clean and respectful one reviewer said they left their basement cleaner than when they came in. Which is impressive considering they’d just ripped out old flooring and installed drainage pipes.

Why they stand out:

• 4.9 stars across thousands of reviews
• Use of advanced materials like FlexiSpan® and DrainShield™
• Professional, uniformed teams (no mystery vans)
• They also offer concrete lifting with PolyLevel®

If you’re in the South and you’re seeing water lines on your basement walls AquaGuard is worth calling.

What to Expect from a Top Waterproofing Company?

The best companies don’t just show up, slap on some sealant, and bounce. They inspect, explain, fix, and follow up. They bring moisture meters, thermal cameras, and know what to do when your wall looks like it’s crying.

Expect:

• Honest quotes (not horror movie price tags)
• Clearly written contracts
• Warranties you can actually read
• Crews who clean up after themselves

And if a company can’t tell you the difference between interior and exterior drain systems? Walk away. Fast.

FAQ: Best Waterproofing Companies in the USA

What’s the average cost of basement waterproofing in the USA?

Usually between $2,500 and $10,000 depending on the size, water damage, and solution required. Small cracks cost less, full systems cost more.

Can I waterproof my basement myself?

You can try, but DIY waterproofing is like putting duct tape on a submarine. It’s better to let pros handle it.

Which is better: interior or exterior waterproofing?

Interior is cheaper and faster. Exterior is more permanent but costs more. Good companies explain which one suits your home.

How long does waterproofing last?

A good system should last 20 to 50 years, especially if backed by a lifetime warranty.

Is One Light Contractors legit?

Very much. They’ve got the reputation, the experience, and the reviews to prove it.

If your basement smells like a wet sock or your crawlspace feels like a swamp, don’t wait. Call a pro. These five companies are trusted, proven, and ready to help you keep your home dry and your foundation standing tall.

Need help choosing one in your area? Just ask. We’ve got more where this came from.