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Guardian ExtraClear™
EN 572-9:2005
Basic soda lime silicate glass intended to be used in buildings and construction works values as of September 2006
02mm03mm04mm05mm06mm08mm10mm12mm15mm
Resistance to fire test NPDNPDNPDNPDNPDNPDNPDNPDNPD
Reaction to fire A1A1A1A1A1A1A1A1A1
External fire performance NPDNPDNPDNPDNPDNPDNPDNPDNPD
Bullet resistance (EN 1063) NPDNPDNPDNPDNPDNPDNPDNPDNPD
Explosion resistance NPDNPDNPDNPDNPDNPDNPDNPDNPD
Burglar resistance (EN 356) NPDNPDNPDNPDNPDNPDNPDNPDNPD
Pendulum body impact resistance (EN 12600) NPDNPDNPDNPDNPDNPDNPDNPDNPD
Resistance against sudden temperature changes and temperature differentialsK404040404040404040
Wind, snow, permanent and imposed load resistancemm234568101215
Direct airborne sound insulation (EN 12758)dBNPD28 (-1;-4)29 (-2;-3)30 (-1;-2)31 (-2;-3)32 (-2;-3)33 (-2;-3)34 (0;-2)36 (-1;-3)
Thermal properties          
Thermal transmittance (U-value)W/(m².K)5.85.85.85.75.75.65.65.5NPD
Radiation properties          
Light transmission τV (EN 410) 0.910.910.910.900.900.900.890.880.88
Light reflection ρV (EN 410) 0.080.080.080.080.080.080.080.080.08
Solar energy transmission τE (EN 410) 0.890.880.870.860.840.830.800.780.74
Solar energy reflection ρE (EN 410) 0.080.080.080.080.080.080.080.080.07
NPD = No Performance Determined