Find trusted waterproofing professionals serving Long Island. 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.
Only companies with a Certified Best Pick® badge meet our strict satisfaction & licensing requirements and are eligible for the Best Pick Guarantee.
All Things Basementy! Our Vision: A world of healthy, safe, and efficient homes. Our Mission: To be the contractor of choice by giving consistently great service to our customers and each other. Our Values: Integrity, Leadership, Growth, Innovation, Education.
Real homeowners looking for waterproofing in your area
"Want to turn a closet into open shelving with draws. Stain a wood wall Paint a stairwell Just pricing out estima..."
"My name is Tami Mitchell. I am looking to have my mother's carpets and the kitchen floor steamed. It would be her master..."
"I have overhead lights out in two rooms The corresponding breaker did not trip When I turned the breaker on and off..."
"We need to have a shower handle replaced in the upstairs shower. In addition, the cold water has not been working in thi..."
"Water is backing into our sink and washing machine in the basement. The water that is coming up is foul smelling and bla..."
"I would like to redo my laundry room in the basement. I would like sheetrock and new floors."
"Reface front of house with vinyl cedar shakes Put white molding around windows I believe it’s called aluminum."
"gas heating and cooling annual contracts"
"I’m interested in getting an estimate for a few electrical repairs and updates needed around my home. Replace a ceiling..."
"I would like to have a window replacement installed. I already have the new window ready to go."
Every Best Pick company in Long Island is independently researched and certified annually. We analyze thousands of customer reviews, verify licensing and insurance, and confirm each company meets our strict qualification standards.
We conduct extensive satisfaction surveys and analyze thousands of customer experiences annually.
Verified by
Independent Research
Companies earn Best Pick certification through performance alone. Only businesses with 80%+ recommendation rates qualify.
Best Pick status isn't permanent. Every certified company must re-qualify annually.
Licensed
Insured
Verified
We stand behind our certified companies with a financial guarantee up to $2,500.
Protected
Financial guarantee included
Only waterproofing companies that meet our strict standards earn Best Pick status.
Waterproofing companies must maintain a 4.0+ rating and an 80% recommendation rate.
Current state contractor license verification and general liability insurance for waterproofing work
Minimum 1 year in business with established local presence
Maintain active business registration and in good standing with the state
Consistent waterproofing service quality across all projects
Must re-qualify every year through new research
Common questions about Certified Best Pick® waterproofing companies in Long Island
Best Pick Certified Waterproofing companies in Long Island have earned their status through independent consumer research—not paid placement. To qualify, a company must meet strict standards:
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:
This guarantee applies only to Certified Best Pick companies, not Standard Pros. Full terms are available on our guarantee page.
