Recent Blog Posts

A light gray square containing the text
By Hibu Websites May 20, 2026
This is a subtitle for your new post

Best Family-Owned Water Damage Restoration and Waterproofing Company in San Diego

Since 1989

Free, In-Person Estimates Within 24 Hours 

24/7 Emergency Services Available 

Same-Day Water Damage Restoration

Request Lorem Epsom

Hero Request Form

Complete Waterproofing Solutions For Every Structure

Medrano Co. has safeguarded San Diego properties from water damage since 1989, successfully completing over 10,000 waterproofing projects during our 37+ years in business. As a local, family-owned company, we understand the specific moisture challenges San Diego buildings encounter, from coastal humidity to seasonal rainstorms. Our full-service waterproofing solutions prevent structural damage and extend the lifespan of your residential, commercial, and industrial properties.

Our certified technicians offer free, in-person estimates within 24 hours of your call, giving immediate attention to your waterproofing needs. With round-the-clock emergency water restoration services, property owners always have support during water emergencies. Medrano Co. provides efficient, cost-effective waterproofing solutions and helps clients navigate insurance claims, creating a smooth process from initial assessment to completion. Contact us today for a free estimate.

Why Choose Us

A stylized figure climbs a set of three ascending steps toward a flag, representing success or reaching a goal.

10,000+ Successful Projects

A black icon of a stylized person with three stars positioned in an arc above their head.

37+ Years of Experience

A black logo featuring a stylized clock combined with a wrench, suggesting speed and mechanical service.

Fast Service at an Affordable Price

A black icon featuring a telephone handset next to a flashing emergency light, enclosed within a circular arrow.

24/7 Emergency Services

A black map pin icon featuring a white barn and silo silhouette inside, centered above a black oval.

Locally Owned

Stylized icon of two hands cupping a small group of people, symbolizing care, support, or community.

Family Owned

A white sofa and side table partially submerged in murky floodwater inside a room with water damage on the walls.

Waterproofing Services

Medrano Co. provides professional waterproofing services in San Diego backed by 37+ years of experience and over 10,000 completed projects. We deliver fast, reliable protection against water intrusion with free 24-hour estimates and 24/7 emergency support.

Water Damage Restoration

Water damage can spread quickly and cause serious structural issues if left untreated. Our expert team provides fast, effective water damage restoration to remove moisture, prevent mold, and restore your property safely.

Mold Remediation & Prevention

Water intrusion often causes mold growth. Our thorough remediation protocols safely remove existing mold while our prevention strategies address moisture sources to keep mold from returning.

Leak Detection Services

Our non-invasive leak detection technology finds hidden moisture sources without unnecessary damage. We use thermal imaging, moisture meters, and pressure testing to locate leaks accurately.

Emergency Disaster Services

When disaster strikes, Medrano Co. is ready with rapid emergency response services to protect your home or business. We act quickly to mitigate damage, secure the site, and begin the restoration process right away.

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.

Exterior Waterproofing Support

Our exterior waterproofing systems defend building envelopes against water infiltration. We apply specialized membranes, coatings, and drainage solutions that preserve structural integrity and prevent moisture-related damage.

Fire & Smoke Damage Restoration

Fire incidents typically involve water damage from firefighting. Our restoration services address both fire damage and resulting water issues, including soot cleanup, odor removal, and structural drying.

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.

Insurance Claims Support

Handling insurance claims for water damage can be difficult. Our team documents all damage completely and communicates directly with insurance companies to help secure claim approvals and fair settlements.

Interior Waterproofing Solutions

Our interior waterproofing solutions tackle moisture problems from inside structures. We install sump pump systems, interior drainage channels, and vapor barriers to control water that has already entered building envelopes.

Leak Detection Services

Our non-invasive leak detection technology finds hidden moisture sources without unnecessary damage. We use thermal imaging, moisture meters, and pressure testing to locate leaks accurately.

Expert Leak Repairs

After detection, our technicians apply targeted repair methods for all leak types. We fix plumbing issues, roof problems, and foundation cracks with suitable materials and techniques for lasting results.

Mold Remediation & Prevention

Water intrusion often causes mold growth. Our thorough remediation protocols safely remove existing mold while our prevention strategies address moisture sources to keep mold from returning.

Complete Specialty Coatings

Our advanced waterproofing coatings deliver invisible protection for various surfaces. These specialized formulas create water-repellent barriers on masonry, concrete, and other building materials without changing their appearance.

Storm Damage & Flood Recovery

San Diego's occasional severe weather can overwhelm normal drainage systems. Our flood recovery services include water removal, structural drying, sanitization, and restoration of damaged materials.

Water Damage Restoration

Water damage can spread quickly and cause serious structural issues if left untreated. Our expert team provides fast, effective water damage restoration to remove moisture, prevent mold, and restore your property safely.

Water Restoration Help

Our water restoration services focus on returning your property to its pre‑loss condition as efficiently as possible. Using advanced equipment and proven techniques, we remove water, dry affected areas, and repair the damage.

Waterproofing Inspection Pros

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

A black icon of three overlapping speech bubbles, representing group chat or messaging.

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.

Frequently Asked Questions

  • What does water damage restoration typically involve?

    Water damage restoration is a multi-step process designed to remove water, dry affected areas, and repair any structural or cosmetic damage caused by leaks, flooding, or excess moisture. It typically begins with a detailed assessment to determine the source of the issue and how far the damage has spread. From there, professionals use specialized equipment to extract standing water, followed by drying and dehumidification to address moisture that may not be visible.


    After the structure is dry, the process often continues with cleaning, sanitizing, and restoring affected materials. This may include drywall replacement, flooring repair, and addressing any lingering odors. Choosing the best water proofing and restoration San Diego, CA has to offer can help ensure the entire process is handled efficiently and that long-term issues like mold growth are minimized.

  • How quickly should water damage be addressed?

    Water damage should be addressed as soon as possible, ideally within the first 24 to 48 hours. The longer water sits, the more it can soak into building materials, weaken structural components, and create an environment where mold and bacteria can thrive. Even a small leak can lead to more extensive issues if it is not handled promptly.


    Quick action also helps reduce repair costs and limits disruption to your home or business. Working with the best water proofing and restoration San Diego, CA residents rely on allows for a faster response and helps ensure that mitigation begins before damage has time to spread.

  • What are the signs of hidden water damage?

    Hidden water damage is not always obvious, but there are several signs property owners can watch for. These can include musty odors, discoloration on walls or ceilings, peeling paint, warped flooring, or unexplained increases in humidity levels. In some cases, you may notice soft spots in drywall or bubbling surfaces that indicate moisture behind the scenes.


    Addressing these warning signs early can prevent more serious structural issues over time. A team known for providing the best water proofing and restoration San Diego, CA property owners depend on can perform detailed inspections and identify moisture sources that may not be visible at first glance.

  • What is the difference between water mitigation and restoration?

    Water mitigation and restoration are closely related but serve different purposes. Mitigation focuses on stopping the damage from getting worse by removing water, drying out affected areas, and stabilizing the environment. Restoration, on the other hand, involves repairing and rebuilding damaged structures to return the property to its original condition.


    Both steps are essential for a complete recovery after water damage. Hiring the best water proofing restoration in San Diego, CA ensures that mitigation and restoration are handled together, reducing the risk of future issues and helping restore the property more efficiently.

  • Can water damage lead to mold growth?

    Yes, water damage can quickly lead to mold growth, especially if moisture is not properly removed. We have found in our experience that mold can begin developing within 24 to 48 hours in damp conditions, and it often spreads in areas that are difficult to see, such as behind walls or under flooring. This can create both structural concerns and indoor air quality issues.


    Proper drying and moisture control are key to preventing mold from forming. Many property owners turn to the best water proofing restoration in San Diego, CA to ensure that moisture is fully addressed and that preventative measures are taken to reduce the risk of future mold problems.

  • What types of properties can benefit from waterproofing?

    Waterproofing is beneficial for a wide range of properties, including residential homes, commercial buildings, and multi-unit complexes. Any structure exposed to moisture, whether from rain, groundwater, or plumbing systems, can benefit from protective waterproofing solutions.


    Investing in waterproofing helps extend the life of building materials and reduces the likelihood of costly repairs down the line. Property owners looking for long-term protection often consider the best water proofing restoration in San Diego, CA to help safeguard their investment.

  • What causes water damage in homes and businesses?

    Water damage can result from a variety of sources, including burst pipes, roof leaks, faulty appliances, clogged gutters, and natural flooding. In some cases, gradual issues such as slow leaks or poor drainage systems can go unnoticed until significant damage has already occurred.


    Regular inspections and maintenance can reduce the likelihood of unexpected issues, and addressing small problems early can prevent them from escalating into larger restoration needs. Property owners looking to stay ahead of potential issues often turn to us for the best water proofing restoration in San Diego, CA. We offer both guidance and long-term protection.

  • How long does the restoration process usually take?

    The length of the restoration process can vary depending on the extent of the damage, the size of the affected area, and how quickly mitigation begins. Minor water damage may take only a few days to resolve, while more extensive damage could require several weeks for complete restoration. Drying alone can take several days.


    A well-organized restoration plan helps streamline the process and minimize disruptions. Working with experienced professionals ensures that each phase, from water extraction to final repairs, is handled efficiently and in the correct order.

  • Why is professional water damage restoration important?

    Professional water damage restoration provides a level of thoroughness and efficiency that is difficult to achieve with basic tools or temporary fixes. Specialized equipment allows for more effective water removal and drying, while experienced technicians can identify hidden issues that may otherwise be overlooked. This helps reduce the risk of ongoing damage or recurring problems.


    In addition, professional restoration helps ensure that repairs are completed safely and correctly. Having a knowledgeable team involved can make a difference.