PPGI vs Aluminum Composite Panel (ACP): Cost, Performance, and Application Comparison
Comparison of PPGI and ACP for building envelopes: cost per m², fire safety, durability, application suitability, and total installed cost analysis.
PPGI vs Aluminum Composite Panel (ACP): Cost, Performance, and Application Comparison
Comparison of PPGI and ACP for building envelopes: cost per m², fire safety, durability, application suitability, and total installed cost analysis.
For building envelopes and facades, PPGI and Aluminum Composite Panel (ACP) are the two most common material choices. They serve similar functions but have fundamentally different properties, costs, and safety implications. This comparison helps architects and builders make informed decisions.
📷 请上传文章主题配图 (建议800×500px)Material and Cost Comparison
| Property | PPGI (0.5mm HDP) | ACP (4mm PE core) | ACP (4mm FR core) |
|---|---|---|---|
| Material cost/m² | $6-10 | $15-25 | $25-45 |
| Installed cost/m² | $15-25 | $40-60 | $55-80 |
| Weight | 4-5 kg/m² | 5-6 kg/m² | 6-7 kg/m² |
| Fire rating | A1 (non-combustible) | B2-B3 (combustible!) | A2/B1 (fire-retardant) |
| Flatness | Moderate (shows oil-canning) | Excellent (very flat) | Excellent (very flat) |
| Formability | Roll-forming, bending | Routing, folding, cassette | Routing, folding, cassette |
📷 请上传Material and Cost Comparison相关配图📷 请上传Material and Cost Comparison细节图Fire Safety: The Critical Difference
This is the most important consideration and is increasingly driving PPGI specification over ACP:
- PE-core ACP is combustible. The polyethylene core melts at 130°C and ignites at 340°C. Multiple high-rise facade fires worldwide (Grenfell Tower 2017 being the most tragic) have been directly attributed to PE-core ACP. Banned for buildings >18m tall in most developed countries.
- FR-core ACP uses mineral-filled core that resists fire propagation. Rated A2 or B1 depending on formulation. Acceptable for most building code requirements but costs 2× PE-core.
- PPGI is inherently non-combustible (A1 rating) because it is 100% steel with only a thin organic paint film. The paint may char in a fire, but the steel does not burn or contribute to fire spread. PPGI is unconditionally code-compliant for ALL building heights.
Application Selection
- Choose PPGI when: Fire safety is critical (all high-rise) • Budget is important • Large surface areas (warehouses, factories) • Exposed to physical damage (trolley impact, stone throw) • Curved profiles needed • Complete non-combustibility required
- Choose ACP when: Exceptional flatness required (premium architectural facades) • Complex cassette and folding details • Small surface areas where cost difference is manageable • FR-core specified for fire compliance
- The trend: Post-Grenfell fire safety regulations are driving a global shift from ACP back to PPGI/PPGL for building facades. PPGI curtain wall systems (steel cassette panels) are now available as direct ACP replacements with A1 fire rating.
📷 请上传Application Selection相关配图📷 请上传Application Selection细节图📌 Key Takeaways
- PE-core ACP is combustible and banned for buildings >18m in most developed countries
- PPGI is inherently non-combustible (A1) — unconditionally code-compliant all building heights
- PPGI installed cost is 40-60% of ACP installed cost for equivalent coverage
- Post-Grenfell fire regulations are driving global shift from ACP back to PPGI/PPGL
Conclusion
The choice between PPGI and ACP often comes down to flatness requirements vs fire safety and cost. As fire regulations tighten globally and PPGI cassette systems improve in flatness, PPGI is gaining share in applications once dominated exclusively by ACP.
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