Waterproofing Contractors in Baltimore, Maryland
Basement waterproofing and foundation moisture control..
Baltimore is Maryland's largest city with historic rowhouses driving massive roofing, masonry, and renovation contractor demand.
Water intrusion through basement walls and floors is one of the most common and damaging residential problems. Waterproofing contractors address this through interior drainage systems (French drains and sump pumps), exterior excavation and membrane application, crack injection, and vapor barriers. The right approach depends on the source — hydrostatic pressure from a high water table requires different solutions than surface water from poor grading or gutter discharge. A thorough assessment before quoting ensures the solution addresses the root cause rather than just the symptoms.
58
Listed contractors
$3k–$15k
Typical cost
What to look for when hiring a waterproofing contractor
- ✓Ask the contractor to diagnose the water source before proposing a solution.
- ✓Get a transferable lifetime warranty in writing — this matters at resale.
- ✓Confirm the bid includes all components: drainage, sump pump, vapor barrier, and any exterior work.
- ✓Ask about their experience with your foundation type (poured concrete, block, stone).
Waterproofing contractors in Baltimore(58 listed)
How much does waterproofing cost in Baltimore?
Interior French drain + sump pump: $3,000–$8,000. Exterior waterproofing: $8,000–$15,000+. Crack injection: $300–$800 per crack. Full perimeter systems cost more.
Waterproofing contractors in Baltimore — FAQ
How many waterproofing contractors are in Baltimore?
EdgeLocal lists 58 licensed waterproofing contractors in Baltimore, Maryland. All listings are sourced from state licensing registries.
What is the average rating for waterproofing contractors in Baltimore?
Waterproofing contractors in Baltimore are listed on EdgeLocal with ratings sourced from Google Business profiles. Use the directory to compare rated contractors near you.
Do waterproofing contractors in Baltimore need to be licensed?
Yes. Maryland requires waterproofing contractors to hold a valid state license. Always verify a contractor's license is current and in good standing before signing any contract or allowing work to begin.
How do I find a reliable waterproofing contractor in Baltimore?
Start by verifying the contractor holds a valid Maryland license. Check their Google rating and read reviews. Get at least three written estimates. Confirm they carry general liability and workers' compensation insurance. Ask for references from recent Baltimore jobs.