Glass Considerations

Is "Clear" glass really clear? Iron content gives glass a slightly green appearance. Low Iron glass (Starphire™ is one brand name) is a more ultra clear option and Low E coatings will affect the color appearance and reflectivity. This photo shows Clear, Low Iron, and Grey where you may see various combinations in a laminated and insulated makeup.

When specifying glass there are so many factors to weigh
- Visible Light Transmission
- Solar Heat Gain
- Color Appearance Interior AND Exterior
- Exterior and Interior Reflectance
- U-Value
- Distortion
- Thickness (frame depth)
- Weight (how heavy are the sliding doors?)
- Cost
- Thermal Stress Risk
- Availability of custom options from window manufacturers