Best Waterproofing Companies in Philadelphia, PA
Philadelphia, Pennsylvania

Best Waterproofing Companies in Philadelphia, PA

Find trusted waterproofing professionals serving Philadelphia. All contractors are independently researched and certified.

Only companies with a Certified Best Pick® badge meet our strict satisfaction & licensing requirements and are eligible for the Best Pick Guarantee.

5
Recommended Pros
2k+
Verified Reviews
Locally FocusedResearch-VerifiedFree Service

5 Contractors

Only companies with a Certified Best Pick® badge meet our strict satisfaction & licensing requirements and are eligible for the Best Pick Guarantee.

Groundworks - Philadelphia
Certified Best Pick

Groundworks - Philadelphia

Certified Pro

Groundworks has over 25 years of experience. If your basement or crawl space has moisture, humidity, or mold issues, we can provide a solution. With local experts and nationally backed warranties available, we are the most trusted and reputable contractor for your basement and crawl space repairs.

13th year as a Best Pick Licensed Insured Workers' Comp
Jamison Home Services, LLC
Certified Best Pick

Jamison Home Services, LLC

Certified Pro

Jamison is an authorized GrateProducts contractor, which includes exclusive access to innovative products, training, and support from the manufacturer. We offer a patented, closed-basement drainage system installed by certified technicians. A healthy basement or crawl space means a healthy home for you and your family. Jamison Basement Waterproofing offers foundation repair and basement and crawl space waterproofing services for residential and commercial customers.

9th year as a Best Pick Licensed Insured Workers' Comp
Basement Waterproofing Specialists
Certified Best Pick

Basement Waterproofing Specialists

Certified Pro

At Basement Waterproofing Specialists, our family's foremost objective is to provide you with award-winning basement waterproofing, foundation repair, mold removal, crawl space waterproofing and encapsulation, and exterior and interior drainage services that create a safe and healthy environment for you and your family. Basement Waterproofing Specialists offers basement and crawlspace waterproofing; drainage systems; mold and mildew inspection and remediation; basement exterior entrance installation; stone, block, cement, and brick foundation structural repair and replacement; basement window and window well repair; and free estimates.

5th year as a Best Pick Licensed Insured Workers' Comp
Quality 1st Basement Systems
Certified Best Pick

Quality 1st Basement Systems

Certified Pro

Our mission is to be relentless in the pursuit of constant improvement for our team and customers. We take pride in the exceptional customer experience we provide each homeowner we meet with. We offer superior products and transferable warranties to every homeowner looking for peace of mind when it comes to their home. Quality 1st Basement Systems provides basement waterproofing, foundation and crawl space repair, and concrete lifting and leveling services.

4th year as a Best Pick Licensed Insured Workers' Comp
Worthington Basement Health Systems
Certified Best Pick

Worthington Basement Health Systems

Certified Pro

At Worthington Basement Heath Systems we take education very seriously, so our mission is to create pathways to improve lives through basement health education. We are a third-generation company whose top priority is your family's well-being! WBHS specializes in basement health and waterproofing services.

3rd year as a Best Pick Licensed Insured Workers' Comp

Recent Project Requests in Philadelphia

Real homeowners looking for waterproofing in your area

Ottsville

"Basement waterproofing"

Feb 20, 2026
Philadelphia

"Browsing"

Sep 6, 2025
Berwyn

"Basement has a sump pump that takes care of most of the basement. The mechanical room has water coming up through the fl..."

Sep 21, 2024
Exton

"Replace basement casement window."

Apr 2, 2024
North Wales, PA

"Inspection of sump pump and back up battery."

Jan 7, 2024
Pottstown

"External leak in corner of rec room wall likely from foundation."

Sep 17, 2023
Chester Springs

"Looking for a quote on waterproofing a basement, with the intent to finish it later down the line."

Jul 16, 2023
King of Prussia

"Looks like there is a water leakage from outside seeping under the laminate flooring in our ground level basement. Would..."

Dec 27, 2022
Swarthmore

"Under the very heaviest rains, if the water level around our house rises significantly, water flows through an opening i..."

Sep 23, 2022
Ardmore

"We're moving into a new place and in the basement the parging is peeling. It needs to be removed and repainted, and the..."

Sep 20, 2022
Certification Standards

How Philadelphia Waterproofing Companies Earn Best Pick Certification

Only waterproofing companies that meet our strict standards earn Best Pick status.

Customer Satisfaction

Waterproofing companies must maintain a 4.0+ rating and an 80% recommendation rate.

Licensing & Insurance

Current state contractor license verification and general liability insurance for waterproofing work

Business Stability

Minimum 1 year in business with established local presence

Verified State Standing

Maintain active business registration and in good standing with the state

Operational Excellence

Consistent waterproofing service quality across all projects

Annual Re-Certification

Must re-qualify every year through new research

Frequently Asked Questions

Common questions about Certified Best Pick® waterproofing companies in Philadelphia, PA

Best Pick Certified Waterproofing companies in Philadelphia, PA have earned their status through independent consumer research—not paid placement. To qualify, a company must meet strict standards:

  • High customer satisfaction: 4.0+ Google rating (25+ reviews) OR 80%+ recommendation rate from surveyed customers
  • Verified credentials: Active state licenses, general liability insurance, and workers' comp (where required)
  • Financial stability: Clean credit history and active Secretary of State standing
  • Local track record: Minimum 1 year serving the Philadelphia, PA area

Certification is re-verified annually, ensuring continued performance.

No. Waterproofing companies cannot buy Best Pick Certification, improved ratings, or better placement. Our research team independently evaluates companies based on customer satisfaction, licensing, insurance, and business stability—before any business relationship exists.

Companies that earn certification pay a participation fee after qualifying, which covers the cost of ongoing research and publication. This fee has no influence on whether a company qualifies or how they appear in our directory.

The Best Pick Guarantee provides financial protection—up to $2,500 in labor costs—if a Certified Best Pick Waterproofing company fails to deliver on their commitments.

To be eligible:

  • Contact the company through Best Pick Reports or BestPickReports.com
  • Register for the guarantee (free)
  • Submit any claim within 45 days of the final date of service
  • Allow the company the opportunity to resolve the issue first

This guarantee applies only to Certified Best Pick companies, not Standard Pros. Full terms are available on our guarantee page.

Signs include water pooling in your basement after rain, musty or moldy odors, white chalky deposits on foundation walls, damp or sweating walls, rust on metal fixtures, and peeling paint. Also watch for cracks in foundation walls, water stains on floors or walls, and increased humidity levels indoors.
Waterproofers install drainage systems that channel water away from structures, inject sealants into foundation cracks to seal out leaks, install waterproof membranes and dehumidifiers, and provide crawl space encapsulation services. The encapsulation process includes installing a waterproofing system, vapor barrier, and adding insulation.