Below Grade Waterproofing

Serving Los Angeles Pacific Palisades And Malibu

Protecting Your Foundation with Below-Grade Waterproofing

Moisture infiltration can lead to structural damage, foundation weakening, and mold growth—especially in below-grade structures like basements, retaining walls, and underground parking garages. At Surfacing And Waterproofing, we specialize in high-performance below-grade waterproofing solutions designed to prevent water penetration and ensure long-term durability for both residential and commercial properties.

How Below-Grade Waterproofing Works

Below-grade waterproofing involves a combination of drainage solutions, waterproofing membranes, and sealants to create a watertight barrier that protects structures from hydrostatic pressure and moisture intrusion. Our approach ensures that water is redirected away from the foundation while maintaining the structure’s integrity.

Key Components of Our Below-Grade Waterproofing System:

Waterproofing Membranes – We use liquid-applied and sheet-applied membranes to seal below-grade surfaces against moisture infiltration.
Drainage Boards – Installed along foundation walls, these boards channel water away while providing additional protection.
Perimeter Drainage Systems – French drains, gravel layers, and sump pump installations help manage groundwater and prevent buildup.
Sealants & Vapor Barriers – We apply industrial-grade sealants and vapor barriers to protect against moisture seepage and condensation.

Our Below-Grade Waterproofing Process

Site Assessment – Our experts evaluate groundwater levels, soil conditions, and foundation vulnerabilities before selecting the best waterproofing approach.
Surface Preparation – Cleaning and prepping foundation walls to ensure optimal adhesion of waterproofing materials.
Application of Waterproofing Membranes – Liquid or sheet-applied membranes are installed to seal foundation walls and underground structures.
Drainage System Installation – Drainage boards, French drains, and sump pumps are integrated to direct water away from the foundation.
Final Inspection & Backfill – We conduct a thorough quality check before carefully backfilling to protect the waterproofing system.

Benefits of Professional Below-Grade Waterproofing

✔ Prevents Structural Deterioration – Stops water from weakening concrete and causing cracks.
✔ Reduces Hydrostatic Pressure – Proper drainage and waterproofing prevent excess water buildup around your foundation.
✔ Minimizes Risk of Mold & Mildew – Keeps below-grade spaces dry and prevents health hazards.
✔ Enhances Property Value – A well-protected foundation increases the lifespan and integrity of your building.

Serving Los Angeles, Pacific Palisades & Malibu

With years of expertise in below-grade waterproofing, we serve residential, commercial, and hillside properties across Los Angeles, Pacific Palisades, and Malibu. Whether you’re building a new structure or reinforcing an existing foundation, we offer customized waterproofing solutions tailored to your needs.

Request a Free Consultation

Protect your foundation and underground structures with expert below-grade waterproofing services from Surfacing And Waterproofing. Call (323) 508-4033 today to get started.