Menu
Below grade areas — such as basements, parking garages, storage rooms, elevator pits, and utility spaces — face constant exposure to groundwater and soil moisture. Without proper waterproofing, this moisture will inevitably find its way through concrete walls and slabs, leading to leaks, mold growth, structural deterioration, and costly interior damage. The pressure from surrounding soil (known as hydrostatic pressure) forces water through even the smallest cracks and pores. At LA Waterproofer, we provide comprehensive below grade waterproofing solutions designed to create a permanent barrier against water intrusion. Whether you’re building new construction or upgrading an existing property, we design and install proven systems that protect your structure from moisture — keeping interior spaces dry, healthy, and safe for decades to come.
Waterproofing below grade areas requires far more than just surface treatment — it demands a multi-layered approach that addresses both water resistance and drainage. LA Waterproofer uses only premium-grade, industry-tested materials specifically designed for below grade applications. Our systems include self-adhering sheet membranes, fluid-applied waterproof coatings, crystalline waterproofing, bentonite panels, and drainage composites — all engineered to withstand hydrostatic pressure, soil shifts, thermal movement, and long-term environmental exposure. We also carefully manage drainage to prevent water buildup around foundations. Our team performs thorough surface prep, crack repair, and substrate treatment to ensure full adhesion and integrity of your waterproofing system. The result is a seamless, flexible barrier that guards your building from moisture — even in the most challenging below grade conditions.
Every building — and every below grade space — has unique challenges when it comes to waterproofing. Soil conditions, water tables, foundation types, construction materials, and building design all play a role in determining the best waterproofing solution. At LA Waterproofer, we never take a one-size-fits-all approach. Whether you’re protecting the basement of a luxury home in Malibu, an underground garage in Los Angeles, a multi-level commercial podium, or a large-scale residential development, we tailor our waterproofing systems to your exact needs. We work closely with architects, engineers, builders, and property owners to develop code-compliant, high-performance systems that match your project’s budget, design goals, and long-term maintenance plan. From single-family homes to large commercial structures, we provide expert guidance and superior workmanship on every below grade waterproofing project.
For more than 38 years, LA Waterproofer has been Southern California’s trusted expert in below grade waterproofing. We understand the critical importance of protecting your building from the ground up — and we bring unmatched expertise to every project we take on. Our licensed and insured team follows strict industry standards and manufacturer guidelines, performing every step of the process with precision and care. We never cut corners — because when it comes to below grade waterproofing, long-term performance depends on expert craftsmanship and attention to detail. Whether you are building new construction, performing major renovations, or addressing existing water intrusion problems, you can rely on LA Waterproofer to deliver results that stand the test of time. Our reputation for quality, reliability, and honest service is why so many contractors, property managers, and homeowners trust us to protect their most valuable assets.
