Maryland, Northeast

Top Waterproofing Contractors in Maryland

Waterproofing contractors protect buildings from water intrusion through basement sealing, foundation coatings, drainage systems, and moisture barriers. US waterproofing work must comply with ICC building codes for below-grade moisture protection and local stormwater management requirements.

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500+

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How to Hire a Waterproofing Contractor in Maryland

01

Post Your Job

Describe your waterproofing project in Maryland — takes under 2 minutes. Add photos, budget, and timeline.

02

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Top Waterproofing Contractors in Maryland

Verified professionals ready to bid on your project

L
PRO Verified

Liberty Construction Co.

Baltimore
4.6(18)32 jobsSince 2019
Basement Waterproofing
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E
PRO Verified

Eagle Build Services

Annapolis
4.5(41)73 jobsSince 2020
Foundation Sealing
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A
Verified

All-American Contractors

Rockville
4.5(64)114 jobsSince 2021
French Drains
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S
Verified

Summit Home Solutions

Frederick
4.7(87)155 jobsSince 2022
Sump Pump Installation
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P
Verified

Patriot Pro Builders

Baltimore
4.7(110)196 jobsSince 2023
Exterior Membrane Systems
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Pinnacle Construction

Annapolis
4.9(133)237 jobsSince 2019
Mold Prevention
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Waterproofing Services Available in Maryland

Basement Waterproofing
Foundation Sealing
French Drains
Sump Pump Installation
Exterior Membrane Systems
Mold Prevention
Average Rate in Maryland: $45–120 / hr — rates may vary based on job complexity and location within the state.

Waterproofing Contractors by City in Maryland

Find waterproofing contractors in specific cities across Maryland.

Frequently Asked Questions

How much does basement waterproofing cost in Maryland?

Basement waterproofing in Maryland costs $5–15/sqft depending on the method. Interior sealants are the most affordable at $1,500–4,000, while exterior excavation and membrane systems run $8,000–25,000 for a full perimeter.

What are signs I need waterproofing in Maryland?

Watch for damp or musty smells in your basement, visible water stains on walls, efflorescence (white mineral deposits), cracks in foundation walls, pooling water after rain, and mold growth. In Maryland, seasonal weather patterns can worsen these issues.

Do waterproofing contractors in Maryland need a license?

Most jurisdictions in Maryland require waterproofing contractors to hold a general contractor or specialty license. They should also carry liability insurance and offer warranties on their work — typically 10–25 years for foundation waterproofing.

How do I find a waterproofing contractor in Maryland?

Compare verified waterproofing contractors on Biddaro in Maryland. Check their warranty terms, read customer reviews, verify licensing, and get at least 3 quotes before committing to a project.

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