🏗️ What Is Subterranean Waterproofing and Why It Matters in Los Angeles

By Shahab J. Shaolian · September 3, 2025

Excavated basement wall with below-grade waterproofing and drainage board

What Is Subterranean Waterproofing and Why It Matters in Los Angeles

In the heart of Los Angeles, where hillside homes, high water tables, and seismic activity collide, subterranean waterproofing isn’t just a construction detail — it’s a necessity. Whether you're building a new structure or renovating an existing one, protecting below-grade areas from water intrusion is critical to long-term durability, safety, and property value.

💧 What Is Subterranean Waterproofing?

Subterranean waterproofing refers to the application of protective systems to foundations, basements, retaining walls, and other below-ground structures to prevent water infiltration. This includes:

Waterproof membranes (sheet or liquid-applied)
Drainage systems (French drains, sump pumps)
Sealants and coatings for concrete surfaces
Protection boards and vapor barriers

These systems work together to shield your property from moisture, mold, and structural damage caused by hydrostatic pressure and groundwater seepage.

🌆 Why It Matters in Los Angeles

Los Angeles presents unique challenges that make subterranean waterproofing essential:

1. Seismic Activity

Cracks from earthquakes can compromise foundation integrity, allowing water to seep in. Waterproofing helps reinforce and seal vulnerable areas.

2. Hillside Construction

Many LA homes are built into slopes, increasing the risk of water runoff and soil saturation around foundations.

3. Seasonal Rainfall

While LA is known for its dry climate, intense winter rains can overwhelm poorly protected structures, leading to flooding and long-term damage.

4. High Property Value

Water damage can drastically reduce a property’s worth. Investing in waterproofing is a smart move for homeowners, developers, and property managers looking to protect their assets.

🛠️ How SKS Construction Protects Your Investment

At SKS Construction, we specialize in custom subterranean waterproofing solutions tailored to Los Angeles soil conditions and building codes. Our team uses industry-leading materials and techniques to ensure:

Long-lasting moisture protection
Compliance with local regulations
Seamless integration with new builds or retrofits
Peace of mind for homeowners and developers alike

Whether you're planning a basement conversion, building an ADU, or reinforcing an aging foundation, we’ve got the expertise to keep your structure dry and secure.

📣 Ready to Waterproof Your Property?

Don’t wait for water damage to strike. Protect your investment today with SKS Construction’s expert subterranean waterproofing services.

📍 Location: SKS Construction, Los Angeles, California, USA 📞 Phone: (818) 855-1181 📧 Email: info@sksconstruction.com 🌐 Website: sksconstruction.com

Contact us now to schedule a free consultation and discover how we can safeguard your property from the ground up.

Shahab J. Shaolian (MS, PE) is the Principal Engineer overseeing structural and architectural design at SKS Construction. He holds a bachelor’s degree in Civil Engineering from Cal-State Northridge and a master’s degree in Architectural Engineering from Cal-Poly San Luis Obispo. His experience includes seismic retrofit, multi-residential, mixed-use and commercial projects.

Talk to SKS Construction

Have a question about your property or project? Contact our team.

Call 818-855-1181 Email info@sksconstruction.com Visit sksconstruction.com