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Contact Down Under Waterproofing Today for a Free Inspection

Servicing New Jersey and 

Eastern Pennsylvania

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Why Contact Down Under Waterproofing?

When you reach out to Down Under Waterproofing, you’re connecting with experienced foundation and waterproofing specialists serving homeowners and businesses across New Jersey and Pennsylvania. Whether you're dealing with a wet basement, foundation cracks, crawl space moisture, or drainage issues, our team provides fast response times and professional evaluations.


We offer:

  • Free foundation and waterproofing inspections
  • Honest recommendations with no high-pressure sales
  • Residential and commercial services
  • Licensed, bonded and insured professionals
  • Lifetime Warrantied Waterproofing Solutions


Customer support is very important to us and we take great pride in providing the best service possible to new, existing, and future customers. Down Under Waterproofing & Foundation Repair welcomes your feedback, questions, and input.

If you have a question, please feel free to contact us by any of the methods described below.

If you would like an appointment, an estimate, schedule an inspection, or request a quote on a project, please give us a call at +1(908) 812-5040 or use our Schedule Inspection or Appointment Request Form.

Areas We Serve

We proudly provide basement waterproofing and foundation repair services throughout:

New Jersey Counties:

  • Somerset County

  • Morris County

  • Monmouth County

  • Mercer County

  • Hunterdon County

  • Passaic County

  • Ocean County

Pennsylvania Counties:

  • Montgomery County

  • Bucks County


If you’re unsure whether we service your area, contact us today — our team is happy to help.

What to Expect After You Contact Us

  1. Quick Response – Our team will reach out promptly to discuss your concerns.

  2. On-Site Inspection – We assess foundation walls, basement moisture, drainage systems, crawl spaces, and structural integrity.

  3. Clear Plan of Action – You receive a detailed explanation and written estimate.

  4. Professional Service – Efficient installation with minimal disruption.


Common Reasons Customers Contact Us

  • Wet basement or standing water
  • Foundation cracks or bowing walls
  • Crawl space moisture or mold concerns
  • Sump pump installation or replacement
  • Exterior drainage problems
  • Foundation settlement or underpinning needs
Contact Down Under Waterproofing – Free Estimates in NJ & PA