Daylight to Solar Gain Ratio (LSG: Light-to-Solar Gain Ratio)

© 2026 ALL RIGHTS RESERVED

FAQ

  1. FAQ
  2. Flammability Classes of Building Materials
  3. Importance of Glass Selection in Buildings
  4. Heat Transmittance Coefficient (U value : W/m2 K)
  5. Coefficient of Thermal Conductivity (W/mK)
  6. Monthly Heating Energy Requirement (QI,month)
  7. Annual Heating Energy Requirement (QI,year)
  8. Specific Heat Loss of the Building (H)
  9. Monthly Average Outside Temperature (Tdış)
  10. Monthly Average Internal Temperature (T internal)
  11. Internal Heat Gain of the Building (φI)
  12. Solar Gains (φg)
  13. Heat Gain Utilisation Factor (η)
  14. Gross Volume of the Building (V gross)
  15. Total Area of Heat Losing Surfaces of the Building (Atop)
  16. Atop / V Gross Ratio
  17. Thermal Permeability Resistance (m2 K/W)
  18. Relative Humidity
  19. Density ( kg/m3 )
  20. Condensation, perspiration
  21. Vapour Diffusion Resistance Coefficient
  22. Temperature Resistance (ºC)
  23. Mechanical Strength (kPa)
  24. Water Absorption
  25. Dimensional Stability
  26. Vapour Diffusion Resistance Coefficient
  27. Daylight Transmittance: (VT or Tvis, visible transmittance)
  28. Daylight Reflection (exterior)
  29. Solar Heat Total Transmittance (SHGC: Solar Heat Gain Coefficient)
  30. Daylight to Solar Gain Ratio (LSG: Light-to-Solar Gain Ratio)
  31. Shading Coefficient (SC: Shading Coefficient)
Daylight to Solar Gain Ratio (LSG: Light-to-Solar Gain Ratio)

Daylight to Solar Gain Ratio (LSG: Light-to-Solar Gain Ratio)

In the past, glazing that reduced heat gain also reduced daylight gain. But today, while reducing the solar gain coefficient, it is possible not to cause a decrease in daylight gain at the same rate. It is meaningful to mention the Daylight Gain / Solar Gain ratio in terms of this feature.

,
FAQ
FAQ
FAQ

The FAQ page is prepared to answer frequently aske...