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Basement Waterproofing
Los Angeles

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Subterranean or basement waterproofing in Los Angeles is the essential practice of protecting underground structures, basements, and foundations from water infiltration and moisture damage. Foundation Repair LA Inc. uses specialized materials and techniques to safeguard your property against costly water damage and increase overall longevity and property value.

A solid foundation after basement waterproofing in Los Angeles

Protect Your Property
From Water Intrusion

Waterproofing is a construction technique designed to prevent water from infiltrating a structure, protecting it from damage caused by moisture, and preserving its integrity. It can include various methods, such as applying coatings, membranes, sealants, and drainage systems, depending on the specific needs and location of your property. Homes located on the hills of Los Angeles often suffer from water intrusion in the below-grade living space, garage, basement, and other subterranean structures, making waterproofing essential.

Water intrusion on a wall needing basement waterproofing in Los Angeles

Your Property May Need Waterproofing If:

  • You notice water seepage or dampness in your home, basement or garage
  • Mold or mildew is present on your property
  • Flooding or standing water occurs during heavy rains
  • Walls or ceilings show water stains or discoloration
  • Your property is in a flood-prone area
  • Your property is located on the hills of Los Angeles
  • Moisture-related issues are affecting your foundation’s integrity
  • You plan to construct or renovate a below-ground space such as below grade garage ADU conversion/li>

Why You Need Waterproofing in Los Angeles

Los Angeles experiences a Mediterranean climate characterized by hot, dry summers and occasional heavy rainfall during the winter months. This weather pattern can lead to sudden, intense downpours and flash floods. Furthermore, many hillside homes in Los Angeles are built into the grade, exposing them to the risk of soil erosion and water runoff during heavy rains. Basement waterproofing in Los Angeles is necessary to prevent water intrusion into the below-grade portions of the home, basement and garage and protect your property’s foundation and overall structural integrity.

Benefits of Waterproofing:

  • Prevents structural damage
  • Extends the lifespan of your property
  • Reduces the risk of mold and mildew
  • Improves overall indoor air quality
  • Preserves property value
  • Reduces maintenance costs
  • Ensures a dry and comfortable living space
solid foundation after basement waterproofing in Los Angeles

How Waterproofing Is Done

Our crew excavates the soil surrounding your rooms or structure, installing shoring where needed to protect existing structures and ensure trench safety. Next, we apply a specialized waterproof, liquid applied membrane, to the exterior walls. To ensure effective drainage and prevent water intrusion, we install a sub-drainage system, sometimes called a “burrito” or “French drain”. Next is the sheet drain system that enables water to move down to the subdrain system and relieve hydrostatic pressure. Finally, we carefully backfill and compact the excavated area with the soil, grading and swales (or v-ditches) are used to direct surface water away from the area. Please entrust this process to experienced professionals in basement waterproofing in Los Angeles, because even small oversights can allow water to breach your subterranean structures, necessitating expensive repairs down the line.

The Consequences Of Water Intrusion

Structural Damage

Water intrusion can wreak havoc on your property, leading to a cascade of structural issues. Persistent moisture can cause wood rot, corrosion of metal components, and deterioration of building materials. This deterioration weakens the overall structure, posing a significant safety risk. Cracks may form in walls and ceilings, and the added weight of absorbed water can strain the framework, potentially resulting in costly repairs or even collapse.

Weakening Foundation

Water infiltration can have dire consequences for your property’s foundation. In regions like Los Angeles, where homes are often perched on hillsides, compromised foundations can have severe consequences. Excess moisture can erode the soil beneath and around the foundation, leading to shifting, settling, and even foundation failure. This can cause uneven floors, sloping walls, and a host of structural problems that are not only expensive to address but also threaten the habitability and resale value of the property. Basement waterproofing in Los Angeles can prevent these costly issues.

Health Conditions

Water intrusion doesn’t just harm your property; it can also affect your health. Damp, humid environments create ideal conditions for mold and mildew growth. These allergenic substances can trigger respiratory issues, allergies, and other health problems, especially for individuals with sensitivities. Additionally, prolonged exposure to moisture can compromise indoor air quality, potentially leading to health concerns and respiratory problems.

Waterproofing FAQs


The most common cause of water leaks is poor drainage and inadequate waterproofing. Water can seep through foundation cracks, joints, or porous concrete, leading to moisture problems.

Can I waterproof my basement from the inside?

The short answer is no. There is no guaranteed waterproofing system that will last and that can be installed from the inside, or “negative” side of a wall. Basement waterproofing in Los Angeles is done from the exterior of the wall, or the “positive” side. It is also important to stop the water from passing through the wall to prevent deterioration of the concrete.

Does waterproofing increase property value?

Yes, a professionally installed waterproofing system can enhance property value by preventing water damage, ensuring a dry living space, and promoting structural integrity

logo for Foundation Repair LA who does foundation repair in Los Angeles

Schedule an Inspection

Foundation Repair LA Inc. invites you to take the proactive step of safeguarding your property from water intrusion. Our team brings decades of combined experience to every project. We’re proudly licensed by the Contractors State License Board with both C-8 and B licenses, ensuring the highest standards in waterproofing and foundation repair. Schedule an inspection today and request a personalized estimate — we provide the best waterproofing solutions tailored to your property’s requirements.

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