Comprehensive code compliance guide explaining EN 13501-1 Euroclasses, difference between reaction to fire and fire resistance (REI 30-120), and industrial firewall criteria.
Fire safety regulations and insurer standards (FM Global) mandate stringent reaction-to-fire and fire-resistance ratings for industrial envelopes.
1. Decoding Euroclass B-s1, d0
B: Very limited fire contribution. s1: Lowest smoke production. d0: Zero flaming droplets. This combination represents the gold standard for insurer compliance.
Comprehensive Engineering Comparison Matrix
| Facility Type | Required Fire Class | Core Recommendation | Fire Resistance |
|---|---|---|---|
| Substations & Power Facilities | A1 Non-combustible | Rock Wool Core | REI 120 min |
| Chemical & Flammables Storage | A1 Non-combustible | Rock Wool Core | REI 90 – 120 min |
| Logistics & Warehousing | B-s1, d0 (FM approved) | PIR Core | 30 – 60 min |
Specify Rock Wool REI 120 for boundary firewalls; specify PIR B-s1, d0 for thermal efficiency across industrial roofs.
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Frequently Asked Questions
Does PIR foam melt in a fire? ▼
No. PIR chars rather than melting, preventing flaming droplets.