U-STUCCO™ is the world’s first fireproof insulated stucco, engineered to withstand over 3,000°F for 2+ hours. Proven in wildfire burn tests and hydrocarbon jet fire tests, it delivers unmatched Class A1 fireproofing without toxic emissions. U-STUCCO™ fortifies wood, EPS, and ICF assemblies while adding insulation,, water resistance, and mold protection. Ideal for wildfire zones.