Choosing the right below-grade waterproofing system is a critical step in foundation construction. With hydrostatic pressure and complex site conditions throughout Los Angeles — especially in hillside areas like Pacific Palisades and coastal sites in Malibu — proper system selection prevents long-term moisture problems.
Why Below-Grade Waterproofing Is Essential for Los Angeles Construction Projects
Below-grade areas, like basements and retaining walls, are always exposed to soil moisture and groundwater. If not properly sealed, water can seep through cracks, cold joints, and wall penetrations, causing mold, corrosion, and even structural damage.
Understanding the Main Types of Below-Grade Waterproofing Systems
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- Fluid-Applied Membranes: Sprayed or rolled on. Seamless and flexible, great for irregular surfaces.
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- Sheet-Applied Membranes: Pre-fabricated sheets. High durability and consistent thickness.
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- Bentonite Systems: Clay-based sheets that swell with moisture. Ideal for confined backfill conditions.
Each system has unique strengths. The best choice depends on factors like foundation type, water exposure, and access.
Key Factors to Consider When Selecting a Foundation Waterproofing System
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- Soil and groundwater levels
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- Wall material (e.g., shotcrete vs. poured-in-place concrete)
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- Installation timeline and site access
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- Drainage integration
Choosing the Right System for Your Basement or Subgrade Structure
Choosing a below-grade waterproofing system shouldn’t be based on cost alone. Each site presents unique challenges that impact performance. A tailored approach ensures the long-term protection of your structure.
For guidance on your project in Los Angeles, Malibu, or Pacific Palisades, contact IHC Group for system recommendations and expert planning. Call (818) 540-5235
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