Should i install solar screens over 366 glass window?

Andersen 366 glass is a high-performance low-e glazing with a Solar Heat Gain Coefficient (SHGC) of approximately 0.22 to 0.27 depending on the configuration, meaning it already blocks a substantial portion of incoming solar heat on its own. Adding exterior solar screens over 366 glass will reduce solar gain further and may help with glare reduction, but it also noticeably reduces visible light transmission — often by 30 to 50 percent — and changes the exterior appearance of the windows. Whether additional solar screens are worthwhile depends on the specific orientation of the windows, your local climate, and the degree of heat or glare discomfort you are experiencing. South- and west-facing windows in hot climates may still benefit from solar screens even over 366 glass, particularly during afternoon peak heat hours. East-facing windows that get morning light but not afternoon sun may not need them at all. Evaluating your specific exposures room by room typically gives the best cost-benefit outcome rather than adding screens to the entire house uniformly.