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 sellin

g 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.

06/15/2026

New Jersey homeowners — keep an eye on your basement, crawl space, and drainage areas after last night’s thunderstorms.
Heavy downpours can quickly reveal problems around a home, including water at the basement wall/floor joint, seepage through foundation cracks, sump pump issues, clogged discharge lines, overflowing window wells, and poor grading around the foundation.

Down Under Waterproofing & Foundation Repair helps homeowners with basement waterproofing, foundation repair, sump pumps, drainage solutions, crawl space repairs, and structural concerns throughout Central New Jersey.

After the rain, check for:
Water near basement walls
Damp or musty crawl spaces
New foundation cracks
Sump pump running constantly
Water pooling near the home
Window wells filling with water
If something does not look right, contact Down Under Waterproofing for an honest evaluation.
Serving Mercer, Monmouth, Middlesex, Somerset, Burlington, Ocean, Hunterdon, and surrounding NJ areas.


Another project underway in Crosswicks, NJ 👇We’re currently building a new 400 sq ft foundation and crawlspace for a hom...
04/26/2026

Another project underway in Crosswicks, NJ 👇

We’re currently building a new 400 sq ft foundation and crawlspace for a home addition, and things are moving along nicely.

So far we’ve:
✔️ Excavated the entire area
✔️ Poured reinforced concrete footings
✔️ Installed rebar tying into the existing structure
✔️ Built the new block foundation
✔️ Waterproofed both the interior and exterior

All work is fully permitted and inspected to meet local building codes — making sure this foundation is built to last.

We’ll be sharing final photos once everything is complete next week.

If you’re planning an addition or dealing with foundation or water issues in Crosswicks or surrounding NJ areas, feel free to reach out 👍

We’ve been seeing more of this lately in older homes—brick walls starting to bow outward.A lot of times it’s not just ag...
04/26/2026

We’ve been seeing more of this lately in older homes—brick walls starting to bow outward.

A lot of times it’s not just age. It usually comes down to moisture getting in over time and weakening the structure behind the wall.

We recently worked on a property where the floor dropped over 3 inches—and that movement started pushing the exterior wall outward.

If you’re noticing:

cracks in brick or mortar
walls that don’t look straight
doors or windows sticking

…it’s worth taking a closer look early.

We put together a more detailed breakdown of what causes this and how it’s repaired here:
https://www.duwaterproofing.com/blogs/post/bowing-brick-wall-repair-nj-philadelphia

04/17/2026

Another Philly home stabilized 🏠
Structural stars used to reinforce a bowing brick wall and prevent future damage.
If your walls are moving, it’s time to get it checked.
📞 908-812-5040

⭐️🏠 Another Successful Foundation Repair in Philadelphia! 🏠⭐️We just wrapped up a project in Philadelphia, where our tea...
04/17/2026

⭐️🏠 Another Successful Foundation Repair in Philadelphia! 🏠⭐️

We just wrapped up a project in Philadelphia, where our team reinforced a bowing brick wall using structural stars — restoring strength and stability while preserving the home’s original character.
This type of repair not only corrects structural movement but also helps prevent future damage — especially important for older Philly homes.

Our customer trusted us with their home, and here’s what they had to say:

💬 “Professional, reliable, and thorough — the team explained everything and delivered exactly what they promised.”

If you’re noticing bowing walls, cracks, or structural issues, don’t wait until it gets worse.

📞 Call today for a FREE estimate: 908-812-5040

🌐 duwaterproofing.com

🏠⚠️ Somerset County Homeowners — Don’t Ignore a Bowing WallWe recently reinforced a bowing brick wall using structural s...
04/17/2026

🏠⚠️ Somerset County Homeowners — Don’t Ignore a Bowing Wall

We recently reinforced a bowing brick wall using structural stars, restoring strength and preventing further structural damage.

With Somerset County’s shifting soil and seasonal weather, foundation issues like this are more common than you think — and they only get worse over time.
If you’re seeing cracks, bowing walls, or movement, it’s time to get it checked.

📞 Call today for a FREE estimate: 908-812-5040

🌐 duwaterproofing.com

04/17/2026

Somerset County homeowners — this is structural damage, not cosmetic.

Don’t wait until it gets worse.
📞 Call now: 908-812-5040

🌐 duwaterproofing.com

04/17/2026

Philadelphia homeowners — this is structural damage ⚠️
Bowing walls only get worse over time.
We fix it the right way.
📞 Call now: 908-812-5040

04/10/2026

Past Clients & Friends — we need your help!
If we’ve worked on your home and you were happy with the results, we’d truly appreciate a recommendation on Nextdoor or Google. Word of mouth from neighbors is how small, local businesses like ours continue to grow.
If you’re on Nextdoor, a quick recommendation goes a long way and helps other homeowners dealing with water or foundation issues find a contractor they can trust.
Thank you for supporting a local business — we’re grateful for every referral! 🙏

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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