What Makes Fire-Resistant Gypsum Resistant to Fire?
Feb 27, 2026
Fire-resistant gypsum resists fire because its core material, calcium sulfate dihydrate (CaSO₄·2H₂O), releases chemically bound water as steam when exposed to heat. This endothermic reaction absorbs heat energy, delaying temperature rise, creating a vapor shield that slows flame penetration and protects structural integrity through reinforced glass fiber within the gypsum matrix. Calcium sulfate dihydrate contains […]
