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Basement Waterproofing Services
French Drains, Sump Pumps & Battery Backup Systems
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.
Basement Crack Repair
A small crack in your basement can let in unwanted moisture and problems of all kind. With heavy rains, water may leak into your basement and flooding may occur.
Foundation & Crawl Space Repair
We diagnose a multitude of problems that can occur in basements, including cracks, movement, leaning, bulging or bowing.
Basement Egress Windows
Waterproofing One can easily add a basement egress window system to improve the look, safety, and provide an easy exit from your basement.

Drywall Services
The professionals at Waterproofing One have the expertise to take care of any residential drywall installation job.
“We have been a basement waterproofing company for over 20 years, proudly serving residents in the Delaware Valley region. We offer superior craftsmanship with fair pricing to all of those in need of basement waterproofing and related services.”
Joseph Soster
Verified 5 Star Contractor

Recently the issue has gotten worse and we reached out to several companies for estimates. Joe and Waterproofing One were extremely responsive, arriving and providing a quote almost immediately after we called. Their estimate was budget friendly and allowed us to address all of the parts that needed fixing, not just the drains, and Joe was very transparent, walking us through what everything entailed.
After signing the contract, a crew was out the following Monday and got straight to work. Throughout the process, they were considerate, communicative, and checked in regularly. They have also been very flexible and helpful as we address a secondary issue with the plumbing, working around that part of the basement and agreeing to come back and repair it later when the plumber is done.
Overall, we've been very happy with our experience with Waterproofing One. It's only been a few days, but so far, so dry, and it's been raining plenty.
Below is an Example of What Can Happen When Cracks in the Foundation Go Ignored
Click or tap on any of the images for a larger view.
Step Cracks in the Foundation.
These are a sign that your foundation is in need of immediate repair!
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WATERPROOFING ONE
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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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.

CUSTOMER TESTIMONIALS
Waterproofing One
4093 Hollow Rd
Phoenixville, PA 19460
Serving Pennsylvania, New Jersey and Delaware
Pa Lic#: Pa057647
NJ Lic#: 13VH09291700
DE Lic#: 17-92051-13-000