Down Under Waterproofing

Down Under Waterproofing At Down Under, we specialize in keeping your home safe, dry, and secure. Estimates are provided to homeowners FREE OF CHARGE.

With over 20 years of experience serving New Jersey and Eastern Pennsylvania, our expert team provides top-notch waterproofing and foundation repair services. If you are serious about solving your basement waterproofing or foundation repair problems, or finishing your basement, then you should get a risk-free in-home consultation with one of our experts. We will not employ any high pressure selling tactics or entice you with coupons or other hollow offers. We will simply provide you with an honest inspection and evaluation of your problem and reasonable solutions. We will not send salesman but rather all estimates will be performed by licensed professionals and include, when appropriate, drawings and input from structural engineers.

From the Studs to Stunning! 🔨✨Check out this bathroom transformation our team recently completed in Princeton Junction, ...
10/19/2026

From the Studs to Stunning! 🔨✨

Check out this bathroom transformation our team recently completed in Princeton Junction, NJ!

What started as an open space with exposed framing and plumbing is now a beautifully finished bathroom featuring:

✅ A spacious, glass-enclosed shower

✅ Marble-look tile throughout the shower and floor

✅ A clean, bright, updated design

✅ Beautiful finishing details

At Down Under Waterproofing, our experience goes beyond waterproofing and foundation repair. We also take pride in renovation and restoration projects that help homeowners improve their living spaces.

Another completed project and another transformation we're proud to share!

📍 Princeton Junction, NJ
Click here for a free estimate: https://go.duwaterproofing.com/free-estimate

🌐 www.duwaterproofing.com







A recent project in Columbia, NJ: our crew removed an existing chimney and patched the areas where it connected to the b...
09/25/2026

A recent project in Columbia, NJ: our crew removed an existing chimney and patched the areas where it connected to the basement.

The homeowner shared a wonderful five-star review, highlighting Walt’s guidance, Max’s scheduling, and the crew’s careful cleanup. Thank you, Michele, for trusting Down Under Waterproofing with this part of your project!

Another contractor will complete the remaining finish work shown in these photos.

09/25/2026

Chimney removal and foundation wall repairs in Columbia, NJ 🏠🔨

Our crew removed the existing chimney and repaired and sealed the foundation openings where it connected to the basement. Another contractor will complete the remaining finish work.

⭐⭐⭐⭐⭐ “Their customer service is second to none!”

Thank you, Michele, for your five-star review and kind words about Walt, Max, and our crew. We appreciate your trust in Down Under Waterproofing!

Have a foundation or waterproofing concern?
📞 908-812-5040 | Free homeowner estimates
🌐 duwaterproofing.com

Another five-star review from Columbia, NJ! ⭐⭐⭐⭐⭐Our crew removed the existing chimney and repaired and sealed the found...
09/25/2026

Another five-star review from Columbia, NJ! ⭐⭐⭐⭐⭐

Our crew removed the existing chimney and repaired and sealed the foundation openings where it connected to the basement. The home is now ready for another contractor to complete the remaining finish work.

Thank you, Michele, for your kind words about Walt, Max, and our crew—from scheduling to cleanup. We appreciate your trust in Down Under Waterproofing and your recommendation!

🌧️ All This Rain in New Jersey? Now Is a Good Time to Check Your Basement.After periods of heavy rain, groundwater level...
09/15/2026

🌧️ All This Rain in New Jersey? Now Is a Good Time to Check Your Basement.

After periods of heavy rain, groundwater levels can rise quickly—and that’s often when homeowners first notice basement seepage, water along the floor/wall joint, foundation cracks, or sump pumps running more frequently.

If you're seeing signs of water, don't wait for the next storm to find out whether the problem is getting worse.

Down Under Waterproofing provides long-term solutions including:

💧 Basement waterproofing
🏠 Full-perimeter French drain systems
⚙️ Sump pump installation
🧱 Foundation crack repair
💦 Crawl space waterproofing & encapsulation
🌧️ Exterior drainage solutions

We’ll evaluate where the water is coming from and recommend the solution that makes sense for your home—without unnecessary upselling or scare tactics.

📞 908-812-5040
🌐 duwaterproofing.com

👉 Request a free homeowner estimate:
https://hubs.ly/Q04vgbjW0

Serving homeowners throughout Central New Jersey and surrounding areas.

09/01/2026

💧 Basement Waterproofing Project — Hamilton Township, NJ

This home was dealing with a high water table along with settlement cracks in the poured-concrete foundation.

Our crew completed a full basement waterproofing system that included:
• Full-perimeter interior French drain
• Two sump pumps
• Clean-stone drainage system below the slab
• Wall drainage membrane tied into the French drain
• Foundation settlement crack repairs
• Exterior discharge and drywell

The new system is designed to collect groundwater around the foundation and direct it to the sump pumps before it can enter the basement.

Another Hamilton Township basement protected for the long term. ✅

💧 Have water in your basement or foundation concerns?
Request your free estimate here: https://hubs.ly/Q04vgbjW0

Down Under Waterproofing
Serving New Jersey & Eastern Pennsylvania

🌧️ Did today’s storms find a weak spot in your home?After heavy rain like we experienced today, homeowners may start not...
08/21/2026

🌧️ Did today’s storms find a weak spot in your home?

After heavy rain like we experienced today, homeowners may start noticing water along basement floors, damp foundation walls, leaking cracks, crawl space moisture, or sump pumps working overtime.

Even if the water stops when the rain does, the important question is why it entered in the first place.

At Down Under Waterproofing & Foundation Repair, we don’t believe in recommending work you don’t need. We evaluate the source of the problem first and then determine the appropriate solution for your home.

We can help with:

• Basement Waterproofing
• Foundation Repair
• French drains and sump pumps
• Crawl space waterproofing and encapsulation
• Exterior drainage solutions

If today’s storm revealed a water problem, give us a call.

📞 908-812-5040
🌐 duwaterproofing.com

Serving New Jersey and Eastern Pennsylvania.



Have a water, foundation, crawl space or drainage problem? Request a free homeowner estimate from Down Under Waterproofing. https://hubs.ly/Q04vgbjW0

08/14/2026

Hamilton, NJ crawl space transformation.

Down Under Waterproofing completed this crawl space waterproofing and encapsulation project in Hamilton, NJ. This project included removal of the damaged old v***r barrier, cleanout and prep, drainage, proper grading, clean stone, and full encapsulation.

Have moisture, musty odors, water, or failing plastic in your crawl space?

Call Down Under Waterproofing today: 908-812-5040

Have a water, foundation, crawl space or drainage problem? Request a free homeowner estimate from Down Under Waterproofing. https://hubs.ly/Q04vgbjW0

Another crawl space waterproofing and encapsulation project completed in Hamilton, NJ.This crawl space had moisture, a d...
08/13/2026

Another crawl space waterproofing and encapsulation project completed in Hamilton, NJ.

This crawl space had moisture, a damaged old v***r barrier, wet soil conditions, and areas that needed proper preparation before encapsulation. Our team removed the failing material, cleaned and prepared the space, installed drainage, added clean stone, completed proper grading, and finished the crawl space with a full encapsulation system.

A proper crawl space waterproofing and encapsulation system can help create a cleaner, drier, and more protected space under the home.

your crawl space has moisture, musty smells, standing water, or failing plastic, it may be time to have it evaluated.

Call Down Under Waterproofing today to schedule an honest crawl space evaluation: 908-812-5040

Down Under Waterproofing & Foundation Repair
Serving New Jersey and Eastern PA

Have a water, foundation, crawl space or drainage problem? Request a free homeowner estimate from Down Under Waterproofing. https://hubs.ly/Q04vgbjW0

Recent storms have already left many New Jersey homeowners dealing with wet basements, foundation seepage, damp crawl sp...
08/06/2026

Recent storms have already left many New Jersey homeowners dealing with wet basements, foundation seepage, damp crawl spaces, and overwhelmed drainage systems—and more rain may be on the way.

Even after the visible water is gone, check your basement or crawl space for damp walls or floors, water stains, musty odors, foundation cracks, or a sump pump that is running more than usual.

If your home took on water, do not wait for the next storm to determine where it is coming from. Down Under Waterproofing provides honest evaluations and practical solutions for Basement Waterproofing, Foundation Repair, French drains, sump pump systems, crawl space encapsulation, and exterior drainage issues.

Every property is different, and the right solution starts with identifying the actual source of the water.

📞 908-812-5040
🌐 duwaterproofing.com

Address

274 Andover Place
Robbinsville, NJ
08691

Opening Hours

Monday 7am - 7pm
Tuesday 7am - 7pm
Wednesday 7am - 7pm
Thursday 7am - 7pm
Friday 7am - 7pm
Saturday 7am - 7pm
Sunday 7am - 7pm

Telephone

+19088125040

Website

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