Glass is not selected by color alone. Its coatings, thicknesses, cavities, heat treatment, interlayers, frit, and edge construction determine how much light and solar energy enter the building and how occupants experience the facade.
Read the key values together
Visible light transmission describes admitted daylight, while solar heat-gain coefficient indicates admitted solar energy. U-value describes heat transfer caused by temperature difference. None of these numbers should be selected without considering the others.
Manage glare and appearance
Large areas of bright sky can cause glare even when total daylight seems reasonable. Orientation, room depth, shading, glass reflectance, interior finishes, and screen positions influence visual comfort and the exterior appearance.
Confirm with samples and analysis
Compare full-size samples under relevant daylight, then use thermal, optical, safety, and structural calculations to confirm the build-up. Aesthetic approval alone does not demonstrate that the glass meets energy or comfort targets.
