MOISTURE BARRIER

Protecting Against Unwanted Moisture

DeepRoot Moisture Barriers are durable HDPE geomembranes designed to block lateral water movement in soil, protecting hardscapes, foundations, and landscapes from moisture-related damage. By stopping subsurface water migration, these barriers help prevent soil heaving, erosion, and the destabilization of pavements and structural elements.

With multiple depths, thicknesses, and roll lengths available, Moisture Barriers provide flexible, reliable performance for both landscape and infrastructure applications.

Why Moisture Management Matters

Subsurface water movement can undermine the stability of pavements, retaining walls, foundations, and planted areas. This moisture migration becomes especially problematic in clays or expansive soils, irrigated landscape zones, sloped planting beds, and sites with poor drainage. DeepRoot Moisture Barriers create a stable, controllable environment by:

• Blocking horizontal water movement through soil
• Helping maintain consistent soil moisture levels
• Reducing the risk of hardscape settlement or heave
• Protecting adjacent structures and landscapes

The result is improved performance and longevity of surrounding built elements.

Key Features

Impermeable HDPE Barrier

Provides effective moisture control for foundations, pavements, and landscapes.

Extended Installation Flexibility

Roll lengths up to 300 feet allow long and seamless runs on-site.

Simple Field Handling

Can be cut to any measured length using a utility knife; vertical and horizontal joining available with sealant tape.

Multiple Depths & Thicknesses

Adaptable to site conditions ranging from shallow moisture control to deep protection zones.

Sustainable Material

Made from 100% post-consumer recycled HDPE and fully recyclable.

Manufactured in the USA.

Applications

• Protection of pavements, sidewalks, and hardscapes
• Foundation and retaining wall moisture defense
• Clay and expansive soil stabilization
• Golf green liners and irrigated landscapes
• Drainage and erosion control zones

Project Case Studies

DeepRoot Moisture Barrier has been used in a range of landscape applications where controlling underground water movement and maintaining separation between adjacent soil zones are important. These two California projects demonstrate how the same flexible barrier can address very different site conditions.

Ruby Hill Golf Club (Pleasanton, California)

At the Jack Nicklaus-designed Ruby Hill Golf Club, maintaining healthy, high-performance greens required careful control of the conditions below ground. Moisture Barrier was installed along the outside of the green to help separate soils, manage moisture, and protect the carefully maintained growing environment.

• Soil separation: Keeps the engineered greens mix separated from the surrounding native soil.
• Root and grass control: Limits unwanted root and turf encroachment into adjacent soil zones.
• Moisture management: Helps maintain the moisture equilibrium required for an intensively irrigated golf green.

McCarthy Center (Milpitas, California)

At the McCarthy Center, a large corporate office park in Silicon Valley, irrigation created the potential for underground water to migrate from planted areas toward adjacent hardscape. A 36-inch-deep barrier was installed along the curbing to interrupt that movement and protect the pavement structure.

• Controls water migration: Separates irrigated planting areas from neighboring hardscape.
• Protects the sub-base: Helps prevent excess moisture from contributing to erosion beneath paved surfaces.
• Supports long-term pavement performance: Reduces conditions that can lead to potholes and surface degradation.