Waterproofing Services

San Diego, CA Area

Free, In-Person Estimates Within 24 Hours 

24/7 Emergency Services Available 

Same-Day Water Damage Restoration

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Professional Waterproofing Solutions

Medrano Co. has been protecting San Diego properties from water intrusion since 1989, bringing over 37 years of specialized experience in professional waterproofing services. As a family-owned company, we have completed more than 10,000 waterproofing projects across the region, earning a strong reputation for reliable, long-lasting protection against moisture damage. We provide comprehensive waterproofing solutions designed to prevent water intrusion, reduce the risk of mold growth, protect structural integrity, and extend the life of your property. Every project is handled with precision, using proven techniques and high-quality materials to ensure lasting results in Southern California’s unique climate.

As a local San Diego company, we deliver fast and dependable service, including free in-person estimates within 24 hours. Our team is available 24/7 for emergency situations, with same-day service available when urgent waterproofing needs arise. We understand that water issues can be stressful and costly, which is why we also assist with insurance claims and provide practical, cost-effective solutions tailored to your property. Whether you're dealing with active water intrusion or looking to proactively protect your home or business, Medrano Co. delivers trusted waterproofing backed by decades of experience. Contact us today to schedule your free consultation and discover how our professional waterproofing services can safeguard your property.

Why Choose Us

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10,000+ Successful Projects

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37+ Years of Experience

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Fast Service at an Affordable Price

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24/7 Emergency Services

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Locally Owned

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Family Owned

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Deck Waterproofing Assistance

San Diego's outdoor spaces need protection from moisture damage. Our deck waterproofing systems use advanced elastomeric membranes and specialized coatings that block water intrusion while preserving visual appeal.

Below-Grade Waterproofing Systems

Our below-grade waterproofing systems shield foundations, basements, and underground structures from groundwater infiltration. We install multi-layered membrane barriers and drainage solutions that prevent hydrostatic pressure buildup and protect against foundation deterioration.

French Drainage Service

Our French drain installations guide groundwater away from foundations and problem areas. These underground drainage systems stop water buildup and pressure that causes basement flooding and foundation damage.

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Waterproofing Inspection

A professional waterproofing inspection helps identify leaks, weak points, and potential water intrusion before major damage occurs. We provide thorough evaluations and recommend cost‑effective solutions to keep your property protected.

Recent Projects

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Here's what our satisfied customers are saying...

At Medrano Co., we take pride in providing exceptional waterproofing services to our customers. We would be grateful if you could share your thoughts about our waterproofing services with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of Medrano Co. and let others know what you think.