Prism Hardscapes · Buying Help
GFRC vs Concrete: What Prism Hardscapes Actually Makes
Prism fire features aren't "concrete" in the backyard-stonework sense — they're cast from glass-fiber reinforced concrete (GFRC), a high-strength architectural composite. GFRC is meaningfully lighter, holds freeze-thaw cycles, and carries the depth of color + surface variation that defines the Prism aesthetic. Here's what the material tradeoff means for installation, care, and expected life.
By Ash · Updated November 10, 2026
What you need
GFRC vs traditional concrete (for fire features)
- Weight
- GFRC: significantly lighter
- Freeze-thaw cycling
- GFRC: engineered for repeated cycles
- Surface finish
- GFRC: hand-applied patina process
- Color variation
- Expected and intentional
- Finish options
- 6 colors across Classic, Modern, Moderno series
Step by step
Understand what GFRC is
GFRC combines a cementitious base with glass fiber reinforcement. The glass fiber gives tensile strength that plain concrete lacks — meaning thinner wall sections (lower weight) can handle fire pit loads and thermal cycling. The material is standard in architectural facades for the same reason.
Know why weight matters for your install
A GFRC fire table at 60-80" scale might weigh 300-500 lbs where plain-concrete casting at the same size would run 700-1000+ lbs. That changes your install math: dollies, two-person lifts, deck-structure rating, and shipping fees all scale with weight.
Expect the hand-finished look
Prism's patina process is manual. The color depth, highlights, and surface texture vary piece to piece. A Classic Series fire bowl in Pewter will not match your neighbor's identical-SKU Pewter piece exactly — and that's the design brief, not a QC issue.
Pick a finish that matches your existing hardscape
Six color/finish options span three product families: Classic (traditional patina palette), Modern (cleaner tones), and Moderno (bold architectural looks). Order a sample through your dealer before committing to a $3k+ piece.
Common mistakes
- Expecting GFRC to feel like poured concrete. It won't. GFRC panels are thinner and slightly more resonant when tapped. That's correct.
Hands-on tips
- GFRC absorbs minimal water compared to sand-based concrete — but it's not waterproof. Cover when not in use (see the Care guide) for finish longevity.
- If you're installing on a wooden deck, confirm the deck load rating against the piece's shipping weight BEFORE delivery.
Questions people ask
Will my GFRC fire table crack in winter?
GFRC is engineered for freeze-thaw cycles. Cracks are rare but can happen with standing water that freezes inside the burner basin. Cover the unit (or drain the basin) through winter.
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