Basement Waterproofing in Saint Louis, MO

Basement waterproofing contractors stop water from entering below-grade spaces and manage the water that collects around a foundation. They diagnose where moisture comes from and install systems such as interior drainage, sump pumps and exterior membranes.

Read more about Basement Waterproofing Show less

Common basement waterproofing services include:

  • Interior perimeter drainage systems
  • Sump pump installation, replacement and battery backups
  • Exterior foundation waterproofing membranes
  • Sealing cracks and wall penetrations
  • Window well and egress window drainage

Call a waterproofing contractor when your basement leaks after rain, you see damp walls, efflorescence or puddles, or your sump pump runs often or has failed. Yard runoff and grading problems are handled by drainage contractors.

Rather tell us about the job and have pros reach out? Find Pros

Top Professionals near Saint Louis, MO

Showing 1–6 of 6 professionals

Filtering by:
Basement Waterproofing ×
Atlas Foundation Solutions LLC
No reviews yet
Fenton, MO Basement Waterproofing

Atlas Foundation Solutions LLC is a locally owned waterproofing and foundation-repair contractor serving the St. Louis metro area from Fenton, MO. Atlas Foundation Solutions provides residential and commercial waterproofing, basement and crawl space solutions, foundation crack repair, epoxy injection, drainage systems, mudjacking, foundation piering, and sump pump services, and offers free estimates backed by more than 30 years of experience and an A+ BBB rating; the company focuses on protecting property from water damage through tailored, technically sound repairs and preventative measures.

View Profile
Certified Waterproofing Inc.
No reviews yet
St. Louis, MO Basement Waterproofing

Certified Waterproofing Inc. is a St. Louis–based waterproofing, foundation-repair, and tuckpointing contractor serving the region since 1888. Certified Waterproofing Inc. specializes in basement waterproofing, exterior drainage, foundation repair, tuckpointing and historic home masonry work, chimney and home repairs, and glass block window installation, and the company focuses on diagnosing problems accurately and delivering long-term, expert repairs for older and historic St. Louis homes; Certified Waterproofing Inc. maintains an A+ Better Business Bureau rating and operates from 8529 S Broadway in St. Louis with phone support and free consultations.

View Profile
Crawlspace Medic of St. Louis
No reviews yet
St. Louis, MO Basement Waterproofing

Crawlspace Medic is a nationwide crawl space and basement waterproofing and repair company that positions itself as "America's Most Trusted Crawl Space Company," offering free inspections and a full range of services including crawl space encapsulation, interior French drains, dehumidifiers, vapor barriers, sump pumps, mold remediation, structural repairs (dry rot, framing, masonry/post pier, termite and water damage), and basement waterproofing systems; Crawlspace Medic supports homeowners with photo inspection reports, financing through Regions (formerly EnerBankUSA), a realtor program, franchise opportunities, and multiple regional locations including St. Louis, MO, while emphasizing home health, honest pricing, and long-term solutions.

View Profile
Fred's Foundation Repair and Waterproofing
No reviews yet
St. Louis, MO Basement Waterproofing

Fred's Foundation Repair & Waterproofing is a locally owned, family-run foundation repair and basement waterproofing company serving St. Louis and South County that provides practical, affordable, and problem-specific solutions tailored to the region’s clay-rich soils and seasonal weather. Fred's Foundation Repair & Waterproofing offers free on-site consultations and a full range of services including basement waterproofing, interior drain tile and exterior waterproofing membranes, sump pump and French drain installation, crack repair and injection, crawl space encapsulation, concrete slab leveling, pier installations (helical and push piers), wall stabilization, and concrete underpinning, and the company emphasizes honest assessments, long-term fixes over cosmetic patches, hands-on workmanship, and transparent pricing.

View Profile
Quality Waterproofing - Foundation Repair
No reviews yet
Valley Park, MO Basement Waterproofing

Quality Waterproofing is a St. Louis–area waterproofing and foundation repair company based in Valley Park, MO, that protects homes and businesses from water and structural damage through comprehensive services including waterproofing, foundation repair, concrete raising, and garage floor coating. Quality Waterproofing emphasizes finding the root cause of problems, delivering long-lasting solutions backed by craftsmanship warranties, and combines decades of experience—over 70 years in business and 70,000+ jobs completed—with a high customer rating and extensive online reviews to provide reliable inspections, certified repair crews, and clear communication.

View Profile
Waterproof Solutions
No reviews yet
Fenton, MO Basement Waterproofing

Waterproof Solutions is a St. Louis–area foundation repair and waterproofing company based in Fenton, MO, that has been keeping homes dry for more than 20 years by focusing on long-term solutions rather than cosmetic patches. Waterproof Solutions offers free foundation repair estimates, on-site inspections, educational video walkthroughs, and tailored waterproofing and foundation-repair services grounded in local knowledge of St. Louis topography and common foundation types; the company is locally owned (new owner Steve Heinrichs), serves a roughly 50-mile radius around Fenton, and emphasizes honest assessments and doing the job right the first time.

View Profile

Find Pros

Need Basement Waterproofing?

Tell us what you need and connect with up to 3 service professionals.

Find Pros

Basement Waterproofing Questions and Answers

What does a basement waterproofing contractor do?

A basement waterproofing contractor finds where water is getting in and installs solutions such as interior drain tile and sump pumps, exterior waterproofing, crack sealing and window well drainage to keep the basement dry.

Why does my basement leak?

Common causes include water pressure in saturated soil, cracks or gaps in foundation walls, leaks where the wall meets the floor, poor grading, overflowing gutters and failing window wells. Identifying the source helps decide between interior and exterior solutions.

How do I choose a waterproofing contractor?

Get more than one opinion, ask each contractor to explain where water is entering and why their solution fits, and compare written warranties. Be cautious of recommendations that ignore simple fixes such as downspout extensions or grading.

What affects the cost of basement waterproofing?

Cost depends on the basement's size and finish, the method used, the length of drainage installed, sump pumps and backups, excavation for exterior work, and access around the house. Finished basements may need walls or flooring removed.

How should I prepare for basement waterproofing work?

Move stored items, furniture and finishes away from the basement walls where crews will work, and expect dust and noise during installation. Ask where discharge lines will run outside and whether an electrical outlet is available for a sump pump.