Seacoast Window & Door

Terms to know for energy-savings

SOLAR HEAT GAIN COEFFICIENT- measures the amount of solar radiation entering the building. Lower is better. 

U-FACTOR - represents the amount of heat transfer. Lower is better. 

VISIBLE LIGHT TRANSMITTANCE- indicates the amount of outside light reaching the interior as calculated using center of glass. Higher percentages mean more outside light reaches the interior. 

ULTRAVIOLET (UV BLOCK)- Percentages indicate amount of UV transmittance blocked from the interior using a 3/4" glazing unit.