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BENEFITS & PROPERTIES

Closed-Cell Structure

Sealed internal cells. Open drainage pathways.

Enviro-Rock is formed with a cellular glass structure containing sealed air pockets within each particle. These closed internal cells help limit water penetration into the particle, while the open spaces between aggregate pieces allow water to move freely through the placed material.


Moisture Resistant
Closed Cells limit water penetration into the 
particle interior.


Closed Internal Cells
Sealed air pockets within the glass structure.


Sealed Cell Structure

Individual cells remain isolated rather than forming continuous pathways through the particle.

Why Closed-Cell Structure Matters


Enviro-Rock contains a network of sealed air pockets formed within the glass during manufacturing. Unlike an open-cell material, these internal pores are not intended to act as interconnected pathways for water through the particle.

At the same time, Enviro-Rock particles create substantial open void space when placed together. Water can therefore drain through the spaces between the particles while the closed-cell structure helps limit water penetration into the particles themselves.

This combination is important in below-grade and civil applications where drainage, moisture resistance, low weight, thermal performance, and long-term material stability may all be required from the same fill layer.


Where Closed- Cell Structure Makes a Difference

Retaining Wall Backfill

Provides a moisture-resistant aggregate structure for backfill exposed to changing groundwater and site moisture conditions.

Foundations & Sub-Slab

Closed-cell particles help limit internal moisture uptake in below-grade assemblies exposed to ground moisture.

Roadways & Embankments

Closed-cell particles help maintain material performance where fill may experience repeated moisture exposure.

TESTING & PERFORMANCE
Supporting Technical Data ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​​ ​View Technical Data →​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​Request Test Results →  ​
Review Enviro-Rock water absorption testing and material data related
to its closed-cell foam-glass structure.

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Explore Related Properties

Drainage & Permeability →  ​ ​ ​ ​ ​ ​ ​ ​                   ​ ​ ​Frost Resistance →  ​ ​ ​​​ ​ ​ ​ ​Thermal Insulation →