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    Basement Waterproofing Services

    French Drains, Sump Pumps & Battery Backup Systems

    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

    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

    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

    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

    Drywall Services

    The professionals at Waterproofing One have the expertise to take care of any residential drywall installation job.


    Mold Inspection & Remediation

    Mold thrives in the dark and damp conditions commonly found in wet basements.  After suffering water intrusion in your home, you may be at risk for mold exposure. Waterproofing One provides mold inspection and remediation services to help detect and remove any traces of mold within your home. 

    Through these services, our inspectors will determine where mold is present and the reason for its growth. Mold can sometimes be difficult to detect, hidden deep within walls, ceilings, and floors. We will conduct tests to uncover any visually-obscured mold growing within the foundations of your home. Our mold remediation services and safe and efficient, performed by experienced professionals who ensure a thorough removal of mold from your property. 

    Contact Us Today Regarding Mold Remediation Services

    Mold Inspection & Remediation Services

    Request a Quote:

    Mold Remediation & Inspection Request

    “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

    4.8 Stars – 491 Reviews from 5 Sources

    Free - Breathe Easy Home Inspection

    We’re Ready To Help You Breathe Easier This Fall And Winter!

    Call Now For a Free Home Inspection!



    Breathe Easy Inspection List


    Mold & Radon

    Downspout Drainage

    Lawn Grading

    Basement Mold Test

    Foundation Inspection

    Crawlspace Inspection

    Get Started

    crawlspace inspection services
    Mold Remediation Services
    Foundation Inspection Services

    Get an Instant Quote

    Free Consultation & Estimates

      Choose service(s):

      Basement WaterproofingFoundation RepairFrench DrainExterior WaterproofingLawn Drainage/GradingSump PumpBasement Egress WindowsWall/Floor CoatingsGutter CleaningGutter GuardsPaver Cleaning & SealingRoofing
      Tell me about discount packages available for the multiple services selected above

      See our reviews from all across the web on Favorite Contractors:

      4.8 Stars – 491 Reviews from 5 Sources

      Hydrostatic Water Pressure Wall Collapse

      Hydrostatic Water Pressure Wall Collapse
      Wall Collapse from Hydrostatic Water Pressure
      Wall Collapse caused by Hydrostatic Water Pressure
      Close-up of a collapsed wall caused by hydrostatic pressure

      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

      Horizontal Cracks in the Foundation.
      An immediate indicator of a failing foundation.

      Step cracks in the foundation walls

      Step Cracks in the Foundation.
      These are a sign that your foundation is in need of immediate repair!

      Collapsing foundation walls

      Collapsed Foundation Wall (Picture 1)

      Foundation walls collapsing. Basement foundation repair &  waterproofing company

      Collapsed Foundation Wall (Picture 2)

      Basement foundation failure & flooding

      The resulting disaster from a collapsed wall and flooded basement. Don’t let this happen to your home’s basement!

      Here’s an example of a new sump pump and our basement waterproofing service.

      Connect with Us on Social Media!

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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.

      Need Financing Plans?

      Why Waterproof a West Goshen, PA Basement?

      The best way to maintain or increase your West Goshen property value is to improve your home through repair, expansion, and remodeling. Basement waterproofing is one of the ways you can help keep your West Goshen 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


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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

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