About Down Under Waterproofing & Foundation Repair
Nearly 20 Years of Expert Service | Licensed, Insured & Bonded
Who We Are?
Why "Down Under"?
What Sets Us Apart?
In a crowded marketplace of contractors, Down Under Waterproofing stands out for our commitment to integrity, expertise, and customer satisfaction:
- NJ License #: 13VH0326760
- PA License #: PA175894
- Bonding #: 72695582
- Full liability and workers' compensation coverage
- Fully compliant with New Jersey bonding regulations for home improvement services
Industry-Leading Warranty
We stand behind our work with a Lifetime, Transferrable Warranty on all waterproofing services. This means your protection lasts as long as you own your home—and transfers to future owners if you sell.
Proven Track Record
We're proud to have earned a 4.9-star rating on Google and a 5.0-star rating on Angi's List, along with countless positive testimonials from homeowners and businesses who trust us with their most valuable asset—their home. We're proud to have earned a 4.9-star rating on Google and a 5.0-star rating on Angi's List, along with countless positive testimonials from homeowners and businesses who trust us with their most valuable asset—their home.
Our Expertise
Down Under Waterproofing & Foundation Repair delivers comprehensive structural repair and waterproofing solutions throughout New Jersey and Eastern Pennsylvania. From historic masonry restoration to advanced foundation stabilization, our team provides durable, long-term results designed to protect your property and preserve structural integrity.
Down Under Waterproofing & Foundation Repair delivers comprehensive structural repair and waterproofing solutions throughout New Jersey and Eastern Pennsylvania. From historic masonry restoration to advanced foundation stabilization, our team provides durable, long-term results designed to protect your property and preserve structural integrity.
Foundation Repair & Structural Stabilization
We repair and rebuild fieldstone, brick, and concrete foundations affected by settlement, cracking, and structural movement. Our team specializes in both modern structural reinforcement and historic foundation restoration, ensuring your property remains stable, secure, and structurally sound for years to come.
Underpinning & Full-Scale Structural Support
Our expert underpinning and stabilization services strengthen foundations that have settled or shifted. Using proven reinforcement methods, we restore structural integrity and prevent further movement in both residential and historic structures.
Carbon Fiber Wall Reinforcement
As certified installers, we use high-strength carbon fiber systems to reinforce bowing or compromised foundation walls without invasive reconstruction.
House Lifting & Foundation Wall Installation
We safely lift homes to install new block, brick, or reinforced concrete foundation walls. Our installations include proper rebar placement and structural reinforcement to ensure maximum strength and long-term durability.
Brick Repointing & Historic Masonry Restoration
Our brick repointing services restore deteriorated mortar joints in brick foundations and historic masonry, preventing water intrusion and structural deterioration while preserving architectural character.
Fieldstone & Stone Foundation Repair
We repair and restore fieldstone and rubble stone foundations, addressing mortar failure, structural weaknesses, and moisture intrusion while maintaining original craftsmanship and appearance.
Retaining Walls & Structural Masonry
We repair and rebuild retaining walls, stone walls, and masonry support systems to prevent soil erosion and restore stability to your property.
Waterproofing & Building Envelope Protection
Our complete waterproofing solutions protect your foundation from water intrusion and long-term damage. Services include French drain installation, sump pump systems, exterior waterproofing, and crawl space encapsulation to maintain a dry, protected structure.
Wood Sill Plate Replacement
We replace rotted or damaged sill plates to reinforce structural integrity and protect against moisture intrusion, pest damage, and long-term deterioration.
Structural Columns & Beam Reinforcement
We install heavy-duty support columns and structural posts to reinforce girders and floor systems, restoring stability to foundations that have weakened over time.
Masonry & Structural Concrete Work
Our masonry and structural concrete services include slabs, foundation walls, stonework, and concrete repairs that strengthen and protect your property’s foundation and building envelope.
Fully Licensed, Insured & Compliant
We are fully licensed and insured for all of our services. We take pride in following all local codes and specifications, working closely with town officials and engineers to ensure the job is done right.
Professional Credentials
- NJ License #: 13VH03267600
- PA License #: PA175894
- Bonding #: 72695582
- Full liability and workers' compensation coverage
- Licensed engineer (PE) oversight for all structural work
- Permits obtained for all structural repairs
New Jersey Bonding Compliance
At Down Under Waterproofing, we are fully compliant with New Jersey's bonding regulations for home improvement services. It's crucial to understand that if a company is not bonded, liability may fall on both the contractor and the homeowner. To ensure your peace of mind, we are fully bonded for all the work we perform.
Manufacturer Certifications
We are certified installers for industry-leading manufacturers including:
• Liberty Sump Pumps
• Tremco Drainage Board
• Rhino Carbon Fiber Systems
Why Homeowners & Businesses Choose Us
When you hire Down Under Waterproofing, you're partnering with a team of dedicated professionals who genuinely care about your home's protection. Here's what sets us apart:
Nearly 20 Years of Experience Since 2006, we've successfully completed thousands of waterproofing and foundation repair projects across New Jersey and Eastern Pennsylvania. Our longevity in the market is a testament to our quality and reliability.
- 4.9-star rating on Google with 100+ verified customer reviews
- 5.0-star rating on Angi's List with verified customer reviews
- Countless positive testimonials from satisfied homeowners and businesses
Proven Track Record
Operational Excellence
Expert Team
Our team is fully trained by trusted manufacturers and stays current with the latest waterproofing technologies and techniques through ongoing professional education.
Local Expertise
We understand the unique soil conditions, seasonal rainfall patterns, and foundation challenges specific to Central and Southern New Jersey and Eastern Pennsylvania. This local expertise allows us to recommend the most effective solutions for your specific situation.
Lifetime Warranty
Every waterproofing project includes a lifetime, transferrable warranty—the best protection you can get.
Protect Your Foundation Before Small Issues
Become Major Repairs
Don't wait until minor foundation or waterproofing problems become costly structural damage. Contact Down Under Waterproofing today for a free estimate and learn how we can protect your foundation, brick or fieldstone structure, and building envelope for the long term.
Why act now?
• Early detection prevents expensive repairs
• Our lifetime warranty protects your investment
• Free estimates with no obligation
• Licensed, insured, and fully compliant
• Nearly 20 years of proven expertise
Schedule Your Free Inspection & Estimate Today
Free estimate not valid for real estate transactions.
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Testimonials
Testimonials
"The estimate was for thousands of dollars less than other Waterproofers. There was one company who was less - he refused to do the job as the basement was small, and the home older so the basement will never be a finished basement. Down Under was easy to arrange financing through Chase. The worker arrived as scheduled. There was a problem with my sewer pipe and the company worked about my need to schedule a plumber and worked about his schedule. Then they returned to set up the washer and dryer after the cement cured. They job was completed as quickly as possible considering my sewer pipe situation."
Sam & Sandy
Testimonials
Testimonials
" Walt was a great guy. He came in and worked with us on the windows we wanted replaced. He also gave us good counsel when we were thinking about not doing the bathroom area. When the team finished he made sure they came back to reconnect the washer and dryer for me and stop up an open pipe to prevent water from sneaking in. The job took down our finished basement but there is no more odor when it rains! I check everytime."
Robert & Julie
Testimonials
Testimonials
I contracted Down Under Waterproofing to reinforce my foundation using carbon fiber. I researched, did my homework, and contacted two manufacturers, one being Fortress Stabilization. They sent Down Under Waterproofing's information. Walter represented the company, came to our house, gave us an estimate, had an engineer write up drawings, picked up the permit, and had the whole basement done in two days. The turn around time was two weeks between initial consultation and completion. It relieved us greatly because this was a real estate transaction.
D.F. Manasquan, NJ
