Pennsylvania & New Jersey's

Complete Basement Waterproofing Experts


A Different Kind of Waterproofing


We will evaluate your home thoroughly, and give you an estimate. Our focus is not to pressure a sale, but to provide a safe, dry environment for you and your family to live in.


We are a family owned and operated business. We have years of experience working in PA nd NJ, so you can have confidence in our ability to take care of YOUR family.


We are proud to use products like the Unipar Sump Basin that are Made in America through our partnership with our sister company, Unipar.


When you select a waterproofing company for your project, it’s the skill level and experience of the people who perform the work that makes the difference between a mediocre job and a job that exceeds all your expectations. When you hire Cornerstone Waterproofing, you are hiring the very best in the industry.


Call us at 877-675-1210 for a Free Inspection from a certified waterproofing expert.

Basement Health Services

  • Waterproofing
  • Moisture Control
  • Wet Basement Repair
  • Sump Pump and Battery Backup Systems
  • Basement Finishing
  • Structural Repair
  • Egress Windows
  • Bilco Doors

Reviews from our neighbors in Pennsylvania & New Jersey

Jennifer Sakowitz
Jennifer Sakowitz
August 24, 2021.
Cannot say enough good things about Rob and cornerstone! They came to our house the day after I called, had the estimate sent over that night, and called the following day to schedule our work for the next week. The level of communication was unmatched. And more importantly, we just made it through a hurricane without a drop of water in the basement! Everyone told us we needed a French drain but we put it off after hearing so many horror stories. Wish we had called Rob sooner because the whole process, start to finish, was a breeze! Can’t say a bad thing about our experience.
June 1, 2021.
Dan was absolutely amazing. Inspected the issue in our basement, provided a quote, and repaired the crack in a timely and professional way. No more leaks! Thank you so much!
Mark Jablonski
Mark Jablonski
June 1, 2021.
Great company and they did an awesome job on our basement! I would highly recommend Cornerstone Waterproofing. Robert and his team were true professionals and their customer service went well above and beyond. They've answered my calls and emails really quickly, which we truly appreciate. A+!!
Adam Fedorko
Adam Fedorko
April 27, 2021.
Rob and his guys did an amazing job on the French drains and left the property cleaner than it was when they arrived. We had heavy rains less than 48 hours after the job was complete and there wasn’t a bit of moisture in the basement. I highly recommend Cornerstone Waterproofing for your waterproofing needs!
April 5, 2021.
After getting multiple references, we chose Cornerstone. Dan and his crew were kind, always on time and extremely hard workers. They were able to quickly identify the moisture issue and explained what needed to be done to correct the situation. Our basement has never been mor comfortable. I highly recommend.
Jennifer Samsel
Jennifer Samsel
March 31, 2021.
Dan and his team are truly top notch.  We met with Dan to discuss our problem and had a written proposal with 48 hours. He is responsive,  answers any questions and is very personable. Dan and his team were time, clean, professional, respectful of your home while working. You would never know they were here besides the now completed drainage/water management system we now have.  As a homeowner you want to protect your investment and that means hiring the right person for the job.  Cornerstone Waterproofing is the company to call for all your Waterproofing needs.
Debra Nami
Debra Nami
March 21, 2021.
Dan Venet is an experienced contractor with exceptional character and work ethic. He and his team do high quality work at a fair and reasonable price. Dan takes personal responsibility to ensure the job is done right which is not easy to find these days. I’ve hired Cornerstone for a number of projects at my home and have been very satisfied. It’s an absolute pleasure doing business with him. I can’t recommend Cornerstone Waterproofing enough. I can say with confidence…. You will not be disappointed.
Shannon Coleman
Shannon Coleman
March 19, 2021.
Daniel was awesome!! Very knowledgeable, friendly and honest!!! HIGHLY RECOMMENDED!
Andrea Spano
Andrea Spano
March 16, 2021.
Dan did a fantastic and thorough job. I'm very pleased with the work and his professionalism and thoroughness. I would recommend Cornerstone Waterproofing to all my friends. He explained every step of the way and is also very neat and considerate. Andrea S.

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