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Single Burning Item reaction-to-fire test running in a modern fire laboratory — a right-angled corner specimen of two pale wall boards stands on a steel trolley inside a metal-lined test chamber, a triangular sand-box burner at the foot of the corner throws a tall orange flame up both faces, a stainless steel collection hood and exhaust duct hang overhead, and a technician in a white lab coat watches from beside an instrumentation rack

Fire Testing

Euroclass A to F: How Europe Rates Reaction to Fire

A Euroclass such as B-s1,d0 comes from the SBI test. Here is what each letter measures, and why a component class never proves a facade will hold.

July 31, 2026 · 21 min read