Fenestration Performance: 7
glass only center to skylight glass only center
ASHRAE Chapter 15 fenestration U-factors (W/m²·K) for windows, skylights, curtain walls, and doors by glazing configuration and frame type. Covers single through quadruple glazing with air, argon, and krypton fill, low-e coatings at various emissivities, and all major frame materials. Source: ASHRAE Handbook Fundamentals 2021 Tables 4 and 6.
| glazing id | frame type | gap fill | gap mm (mm) | glazing category | glazing type | num panes (dimensionless) | u factor Wm2K (W/(m2·K)) |
|---|---|---|---|---|---|---|---|
| 7 | glass only center | argon | 13 | Double Glazing | 13 mm argon space | 2 | 2.56 |
| 7 | glass only edge | argon | 13 | Double Glazing | 13 mm argon space | 2 | 3.24 |
| 7 | operable alum no break | argon | 13 | Double Glazing | 13 mm argon space | 2 | 4.16 |
| 7 | operable alum thermal break | argon | 13 | Double Glazing | 13 mm argon space | 2 | 3.18 |
| 7 | operable insul fiberglass vinyl | argon | 13 | Double Glazing | 13 mm argon space | 2 | 2.46 |
| 7 | operable reinf vinyl alum clad | argon | 13 | Double Glazing | 13 mm argon space | 2 | 2.84 |
| 7 | operable wood vinyl | argon | 13 | Double Glazing | 13 mm argon space | 2 | 2.74 |
| 7 | skylight alum no break | argon | 13 | Double Glazing | 13 mm argon space | 2 | 5.96 |
| 7 | skylight alum thermal break | argon | 13 | Double Glazing | 13 mm argon space | 2 | 5.19 |
| 7 | skylight glass only center | argon | 13 | Double Glazing | 13 mm argon space | 2 | 3.01 |
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