Visible Light Transmission vs Solar Heat Gain?

Visible Light Transmission vs Solar Heat Gain? Summer vs Winter U-Value, Exterior & Interior Visible Reflectance? SN68 vs SB70 vs LoE 366 or other Low E coatings? High performance glass has so many variables that affect the aesthetics, energy performance, comfort, and cost, how do you choose?

- Vitro, Cardinal, Guardian, St Gobain, Viracon - Glass manufacturers vs fabricators, what differentiates them?

- Coatings vs "tint" - "Tint" is essentially the apparent color of the glass lites themselves with Clear and Gray being the most typical but there are so many more choices available.

- Low E coatings are applied to the surface of the glass lites and are the most complicated variable because every manufacturer has multiple options that affect your energy performance, amount of daylight, the color of your interior daylighting, how reflective it is from inside and out, and the cost.

- Insulated Laminated vs non-insulated laminated? Do you need insulated glass to meet your performance targets? What is the added cost vs balancing other aspects of your insulation and HVAC system?

- NFRC vs real world energy performance? NFRC labels do not reflect the size of the windows and doors used in your project so may be very misleading.

I help architects, builders, and owners select, specify, and detail luxury residential hurricane glazing systems without manufacturer or dealer biases. I also give classes in all aspects of hurricane windows and doors on glass aesthetics and energy performance, manufacturer product overviews, detailed installation planning and best practices, and understanding hurricane product approvals.

Previous
Previous

Doors designed to FAIL?

Next
Next

Pocket Sliding Door Layout