Foam Glass Gravel
Foamed glass aggregate made from 100% recycled glass — drainage, insulation, and lightweight fill in one subslab material.
Shipping: Quoted after checkout
What it does
Glavel Foam Glass Gravel is a lightweight, foamed glass aggregate made from 100% recycled glass. It replaces foam-board insulation, crushed-stone fill, and free-draining gravel in one material that delivers drainage, insulation, and compressive strength.
When to use it
- Subslab insulation under foundations
- Lightweight fill for ground improvements
- Green-roof drainage and lightweight fill
- Frost-protected shallow foundations
Key benefits
- R-1.7 per inch — stable in damp conditions (closed-cell, doesn't absorb water)
- 115–125 psi compressive strength when properly compacted
- Extremely low embodied carbon
- Non-combustible, formaldehyde-free, non-leaching
- Resistant to rot, pests, and frost heave
Format
Loose foamed-glass aggregate, delivered in bulk for spreading and compaction.
Material Health & Certifications
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