Estimators, project managers and site supervisors
Enviro-Rock for contractors
Enviro-Rock arrives in trailer loads from about 45 m³ up to 140 m³, or in 1.7 m³ (2.2 yd³) super sacks.[1] It goes down in 300 to 600 mm loose lifts under a static roller with no vibration, or 150 to 300 mm loose lifts under a plate compactor with more passes rather than more vibration, and is compacted 10 to 20%.[2][3]
Enviro-Rock at a glance
- Loose dry bulk density
- 200 kg/m³
- Angle of friction
- 39° at 65 kPa
- Thermal resistance
- R-2.4 per inch, dry
- Up to, per B-train load
- 140 m³
From the Enviro-Rock specification table and delivery trailer sheet. Sources on the product page.
Your priorities
What you need from a supplier
01
The right order quantity
Some agencies pay per in-place volume while the material ships loose, so the estimate converts one to the other.[4]
02
Trucks that fit the site
Load sizes, trailer types and delivery timing that match site access, staging space and the placement crew.
03
Rules the crew can follow
Lift thickness, equipment and compaction limits that are simple to check on site.
What you get
What Enviro-Rock provides
01
Trailer options
B-train end dump up to 140 m³ (about 183 yd³), shuffle floor up to 106 m³ (138 yd³), end-dump trailer up to 45 m³ (59 yd³), truck and pup up to 45.7 m³ (59.7 yd³), and 1.7 m³ super sacks at up to 102 m³ a load.[1]
02
The delivery estimator
Enter a destination and a compacted volume, and the delivery estimator returns the loose volume to order, the truckloads and an indicative delivery window by road distance.
03
Compaction equipment rules
Static double drum rollers with no vibration in 300 to 600 mm loose lifts, plate compactors in 150 to 300 mm loose lifts with more passes rather than more vibration, and no jumping jacks; compact 10 to 20%.[3][2] Wheeled machines stay off placed material.[5]
04
The layer stack
The installation guide shows non-woven geotextile between the fill and the proof-rolled ground below, and a geotextile or filter cloth layer between the fill and the crushed gravel above.[2]
05
Spreading and unloading
Wheeled machines stay off placed fill[5], so spread it with tracked equipment. Tell us about tipping space and overhead lines when you request a quote; a shuffle floor trailer unloads without raising its box.
Applications
Where you are likely to use it
Application
Soft ground embankments
Enviro-Rock foam glass aggregate fill for road embankments, grade raises and widenings over soft or compressible ground, accepted on BC's Recognized Products List.
Application
Retaining wall backfill
Free-draining foam glass aggregate backfill for MSE, cast-in-place and segmental retaining walls, where a lighter fill means less lateral earth pressure on the wall.
Application
Bridge approach fill
Lightweight, free-draining fill for bridge approach embankments and the backfill behind abutments and wing walls, to cut approach settlement and earth pressure on the structure.
Application
Under-slab insulation
One layer of foam glass aggregate under a slab on grade that insulates, drains, breaks capillary rise and gives soil gas a path to a radon system.
Application
Trench backfill
Lightweight, insulating trench backfill for utility lines, pipeline corridors and manholes, to cut the load on buried pipes and help protect lines from frost.
Application
Sports field fill
Lightweight, free-draining fill that brings sports fields, parks and playgrounds to grade over soft ground, used at Vancouver's Killarney Park and Burnaby's Jim Lorimer Park.
Questions
Common questions
How is Enviro-Rock placed and compacted?
Place it on non-woven geotextile in 300 to 600 mm loose lifts under a static roller with no vibration, or 150 to 300 mm loose lifts under a plate compactor with more passes rather than more vibration, and compact it 10 to 20%.[2][3] Do not use a jumping jack, and keep wheeled machines off placed material.[5]
Should I order loose or compacted volume?
Order loose volume, allowing for about a 20% reduction from loose thickness unless the design specifies otherwise.[5] Field tests summarized by FHWA measured about 8 to 17% lift volume reduction under a typical compaction specification, so confirm the factor with the engineer before ordering.[8]
How do I check compaction on site?
Measure how much each lift drops. Agency specifications check this by string line or survey, and New York State DOT targets about 80% of the original lift thickness.[9] Enviro-Rock's guide allows for about a 20% reduction in loose thickness.[5]
Will my equipment crush it?
Vibration and high-impact compaction break particles down. Use a static roller with no vibration, or a plate compactor with more passes rather than more vibration; keep wheeled machines off placed material and do not use jumping jacks.[2][5][3]
How fast can you deliver?
Delivery times depend on location and product availability.[6] The delivery estimator gives an indicative window from road distance, and your quote proposes a delivery schedule for your order.
How much does freight add to the price?
It depends on the haul. Illinois Tollway research found that shipping distance significantly affects the cost of foam glass aggregate: in its example, an 800-mile haul added about $34 to an in-place cubic yard costing $169.[10] Because Enviro-Rock is light, a B-train carries up to 140 m³ (about 183 yd³), so each load moves a large volume of fill.[1]
Sources
- [1] Enviro-Rock delivery trailer overview, Enviro-Corp Recycling
- [2] Enviro-Rock installation guide, Enviro-Corp Recycling
- [3] Enviro-Rock compaction equipment sheet, Enviro-Corp Recycling
- [4] Special Provision Section 203, Ultra-Lightweight Foamed Glass Aggregate, Maine DOT, 2025
- [5] Enviro-Rock installation, Enviro-Corp Recycling
- [6] Frequently asked questions, Enviro-Corp Recycling
- [7] Enviro-Rock cellular foam glass aggregate, Enviro-Corp Recycling
- [8] Alternative Backfills for Highway Applications: State of the Practice (FHWA-HRT-23-110), Federal Highway Administration, 2024
- [9] Item 203.03200017, Lightweight Foamed Glass Aggregate Fill, New York State DOT, 2023
- [10] Applications for Foamed Glass Lightweight Aggregate, final report, Illinois Tollway Research Program, Washington State University et al., 2025
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