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Basement Waterproofing

Nothing is more frustrating than dealing with a wet basement. It can damage walls and flooring and ruin irreplaceable things like photo albums and family heirlooms. But knowing the causes of wet basements and how to prevent water damage can help avoid this frustration.

Foundation Repair

Many basements have structural problems. The repair of these defects takes a professional to recognize and diagnose the multitudes of problems that can occur in basements. Foundation failures can include cracks, movement, leaning, bulging or bowing.

Exterior Waterproofing

An exterior drain system does not allow any moisture inside a basement or crawl space. As apposed to an interior drain system, an exterior waterproofing system diverts all water before it is able to come in contact with your foundation.

Basement Remodeling

Tired of your dreary damp basement? Think you should be using all that space for more than storage or laundry? You’re correct! Turn your basement into a beautiful finished living space.

Hydrostatic Water Pressure Wall Collapse


Waterproofing One can easily add a basement egress window system to improve the look, safety, and provide an easy exit from your basement.

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is the premiere specialty contracting and basement waterproofing company under Soster General Contractor, LLC, for basement waterproofing and foundation repair in the Greater Philadelphia PA, Montgomery County PA, Chester County PA, Berks County PA, Bucks County PA, and Delaware County PA areas. Our headquarters is located in Phoenixville, PA.

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Nothing is more frustrating than dealing with a wet basement. It can damage walls and flooring and ruin irreplaceable things like photo albums and family heirlooms.

We are a dynamic regional specialty contractor providing the most reliable contractor source available in the field of exterior building maintenance…

Many basements have structural problems. The repair of these defects takes a professional to recognize and diagnose the multitudes of problems that can occur…

There are basically two ways to waterproof a house or building. The first and most common way is from the inside using a French Drain…

When water finds its way into the basement of a structure, the owner needs to remove it because it could lead to mold infestation and weaken the basement foundation walls.

Having a crawl space can have its advantages and disadvantages. They serve as a good place to run utilities and a good storage space. Although without…

Why Waterproof a Basement?

The best way to maintain or increase your property value is to improve your home through repair, expansion, and remodeling. Basement waterproofing is one of the ways you can help keep your property value high while saving your foundation from potential disastrous situations brought on by rain. If water seeps into your basement, that is a bad sign. Basement leaks can mean your foundation is in need of repair to keep the walls from cracking or growing mold which can be deadly to your family.
There are two ways to waterproof your basement, using either an Interior or Exterior Hydro-Static Pressure Relief System.

Interior Waterproofing System

An interior drain system is the cheaper route, but can still allow some water to come in.


Waterproof a Basement or Foundation

They made sure the carpets were protected, they put plastic up around the job so dust did not go through the house, very professional and did a great job.

Catherine D. / Aston, PA

Install or Replace Foundation Drains

Professional and competent

Neha P. / Philadelphia, PA

Thanks for your excellent work.  I know you are a man of your word and will finish the EZ Breath installation once the sheetrock is done. I did not see the need to hold the $100 as you suggested. I look forward to hearing from you soon about the estimate for re-finishing the sheetrock, and the estimate for laying down the vinyl flooring. Thanks again!

Behzad Pavri

Joe Soster and his crew installed a basement waterproofing system and a sump pump in my home. The quality of work was simply awesome; the crew respected our home, worked hard, and produced a great final product. The price was very reasonable. I am very satisfied!

Mark Moore

Thank you and your crew for working on the various parts of my house. You’ve helped me out in more ways than you could know, taking away much of the burden. I’m appreciative of the fact that you billed my only for the men’s time on the last day.

Susan May
128 Reviews

Reviews From and more

Mike Jansen
August 18, 2019
Great company. Hard workers. Dedicated to doing it right.
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Wendell Smaslorn
August 18, 2019
I’d use WaterproofingOne for my mom’s basement, too. They said three days to fix my issues, but only took two. Cleaned up and now no water problems like I had for 4 years before. Thanks WaterproofingOne.
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William Davis
July 16, 2019
I accidentally left my outside faucet on for several hours and discovered some water in the basement the next day. After several weeks I decided I should check with an expert on basements in order to insure I hadn’t created a bigger problem, but primarily for peace of mind. ...
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Maria Fegely
June 06, 2019
Waterproofing One is a company I highly recommend. I was impressed from my first call to set up the inspection, the inspector who came out to quote the job, to all who worked the job. Everyone was courteous, on time, worked hard, and cleaned up after themselves. The work was com ...
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Sue S
May 30, 2019
Waterproofing One definitely stands behind their work. We had a problem with water in the basement and the team came out to assess the problem. They put in a new drain and repaired the foundation crack. Unfortunately, the original fix didn't work and they had to return a secon ...
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Lisa Petry
May 11, 2019
Thanks for coming to the rescue so fast after a freak flood in our basement. We are selling our home & wanted to ensure this situation will never happen to the next owners- it’s better than when we lived there for 26 years! They told us what we needed, working in the rai ...
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(800) 508-4144

Waterproofing One

4093 Hollow Rd
Phoenixville, PA 19460

Serving Pennsylvania, New Jersey and Delaware

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Pa Lic#: Pa057647
NJ Lic#: 13VH09291700
DE Lic#: 17-92051-13-000