Fire Media Selection Guide
How Much Fire Media Do You Need for Your Fire Pit?
Choosing the correct amount of fire glass, lava rock, or lava stones ensures proper burner coverage, clean flame appearance, and optimal performance. Use the sizing tables below to determine how much media your fire pit, fire bowl, or burner pan requires.
MEDIA DEPTH GUIDELINES
Fire Glass: 1.5" – 2"
Lava Rock: 2" – 3"
Lava Stones: 1 layer above rock base
Combination Installs: Lava rock base + ½"–1" of fire glass on top
These depths create ideal flame presentation and help prevent overheating of burners and components.
PRISM HARDSCAPES FIRE BOWLS – APPROXIMATE MEDIA REQUIREMENTS
| Prism Model | Fire Glass | Lava Rock | Notes |
|---|---|---|---|
| Moderno 1 | 20–25 lbs | 20–25 lbs | Shallow interior |
| Moderno 2 | 25–35 lbs | 25–35 lbs | Medium interior depth |
| Moderno 3 | 30–40 lbs | 30–40 lbs | Wide burner area |
| Moderno 4 | 35–45 lbs | 35–45 lbs | Largest Moderno bowl |
| Pentola 1 | 15–20 lbs | 15–20 lbs | Small, deep bowl |
| Pentola 2 | 20–25 lbs | 20–25 lbs | Medium depth |
| Pentola 3 | 25–30 lbs | 25–30 lbs | Large, deeper bowl |
PRISM HARDSCAPES FIRE TABLES – APPROXIMATE MEDIA REQUIREMENTS
| Prism Model | Fire Glass | Lava Rock | Notes |
|---|---|---|---|
| Tavola 1 | 25–35 lbs | 25–35 lbs | Compact rectangular table |
| Tavola 2 | 30–40 lbs | 30–40 lbs | Narrow, elongated fire area |
| Tavola 3 | 30–45 lbs | 30–45 lbs | Longest fire table model |
FIREGEAR KALEA BAY SERIES
| Model | Fire Glass | Lava Rock | Lava Stones |
|---|---|---|---|
| 36" Kalea Bay | 15 lbs | – | – |
| 48" Kalea Bay | 20 lbs | – | – |
| 60" Kalea Bay | 25 lbs | – | – |
| 72" Kalea Bay | 25 lbs | – | – |
FIREGEAR SANCTUARY 1 & 76 MODELS
| Model | Fire Glass | Lava Rock | Lava Stones |
|---|---|---|---|
| Sanctuary 1 | 30 lbs | 40 lbs | 45 lbs |
| Sanctuary 76 | 40 lbs | 50 lbs | 55 lbs |
FIREGEAR SANCTUARY 2 & 3 MODELS
| Model | Fire Glass | Lava Rock | Lava Stones |
|---|---|---|---|
| Sanctuary 2 | 120 lbs | 30 lbs | 35 lbs |
| Sanctuary 3 | 70 lbs | 15 lbs | 20 lbs |
ROUND FIRE PITS – GENERAL MEDIA SIZING
| Diameter (ID) | Lava Rock | Fire Glass | Lava Stones* |
|---|---|---|---|
| 16" | 10 lbs | 30 lbs | 10 lbs |
| 20" | 15 lbs | 40 lbs | 15 lbs |
| 25" | 25 lbs | 50 lbs | 25 lbs |
| 29" | 35 lbs | 70 lbs | 35 lbs |
| 34" | 45 lbs | 90 lbs | 45 lbs |
*Lava stones should be placed above a lava rock base layer.
SQUARE FIRE PITS – GENERAL MEDIA SIZING
| Side Length (ID) | Lava Rock | Fire Glass | Lava Stones* |
|---|---|---|---|
| 20" | 10 lbs | 30 lbs | 10 lbs |
| 26" | 15 lbs | 50 lbs | 15 lbs |
| 30" | 20 lbs | 70 lbs | 20 lbs |
| 33" | 30 lbs | 90 lbs | 30 lbs |
*Lava stones should be placed above a lava rock base layer.
STAINLESS STEEL DROP-IN FIRE PANS
| Pan Size | Lava Rock | Fire Glass | Lava Stones |
|---|---|---|---|
| 24" × 12" | 10 lbs | 20 lbs | 20 lbs |
| 36" × 14" | 20 lbs | 30 lbs | 30 lbs |
| 48" × 16" | 30 lbs | 50 lbs | 50 lbs |
| 60" × 16" | 50 lbs | 70 lbs | 70 lbs |
| 72" × 16" | 70 lbs | 90 lbs | 90 lbs |
FLAT & T-FLAT FIRE PANS
| Pan Size | Lava Rock | Fire Glass | Lava Stones |
|---|---|---|---|
| 24" × 24" | 30 lbs | 60 lbs | 60 lbs |
| 36" × 36" | 50 lbs | 100 lbs | 100 lbs |
| 48" × 48" | 70 lbs | 150 lbs | 150 lbs |
MEDIA INSTALLATION TIPS
Lava Rock Only:
Use enough to fully cover the burner while maintaining airflow. Avoid excessive depth.
Lava Rock Under Fire Glass:
Add lava rock until the burner is just covered, then place ½"–1" of fire glass on top for a polished finish.
Lava Stones Over Lava Rock:
Build a lava rock base layer above the burner, then set stones decoratively across the top layer.