In order to transmit visible light, Kalwall has developed translucent thermal insulation (TI) options, including Cabot’s Lumira® aerogel. Achieve U-factors between 0.53 – 0.05 as well as VLT% between 3%-50% and solar heat gain coefficients (SHGC) as low as .04. No matter the application, Kalwall has the right thermal insulation packages for even the most extreme environments.
U-values shown in bold denote thermally-broken grid core panels.
Visible light transmission (VLT) – NFRC 202, ASTM E-972 (approximate) as noted. VLT percentages over 30% are not recommended for most Kalwall applications.
Panel U-values include panel grid-core by NFRC 100 or 102. NFRC certified system U-values vary depending on framing. Project-specific Information available by request.
Shading Coefficient (SC) is equal to 1.15 times the Solar Heat Gain Coefficient (SHGC). *By calculation only (not by NFRC 201). By calculation only (not by NFRC 202)
| Face Sheets Combinations | VLT% by NFRC 202 | SHGC by NFRC 201 | |||||
| Exterior FRP | Interior FRP | 0.28 U | U.16 U | 0.14 U | 0.28 U | U.16 U | 0.14 U |
| Crystal | Crystal | 29% | 16% | 15% | 0.34 | 0.23 | 0.22 |
| Crystal | White | 21% | 13% | 8% | 0.30 | 0.19 | 0.12 |
| White | Crystal | 20% | 14% | 8% | 0.24 | 0.17 | 0.10 |
| White | White | 15% | 12% | 6% | 0.20 | 0.16 | 0.10 |
| Cumulus | Crystal | 32% | 21% | 11% | 0.35 | 0.24 | 0.14 |
| Cumulus | White | 22% | 15% | 8% | 0.31 | 0.15 | 0.13 |
| Cirrus | Crystal | 21% | 13% | 7% | 0.29 | 0.19 | 0.12 |
| Cirrus | White | 14% | 9% | 5% | 0.25 | 0.18 | 0.13 |
| Nimbus | Crystal | 16% | 9% | 5% | 0.26 | 0.16 | 0.12 |
| Nimbus | White | 10% | 7% | 4% | 0.24 | 0.16 | 0.11 |
| Stratus | Crystal | 7% | 4% | 2% | 0.17 | 0.14 | 0.10 |
| Stratus | White | 4% | 3% | 2% | 0.18 | 0.13 | 0.09 |
*All NFRC 100 U-Factors above are thermally-broken (TB) for the 175CW series
| FRP Face Sheet Combinations | Visible Light Transmission (VLT) % by NFRC 202 | Solar Heat Gain Coefficient @ 0° by NFRC 201 | |||||||||
| Exterior FRP | Interior FRP | 0.53 U | 0.29 | 0.23 U | 0.22 | 0.14 U | 0.18 | 0.10 U | 0.05 U | 0.53 U | 0.29 | 0.23 U | 0.22 | 0.14 U | 0.18 | 0.10 U | 0.05 U |
| Crystal | White | 37% | 26% | 13% | 7% | 20% | 0.44 | 0.30 | 0.15 | 0.09 | 0.27 |
| White | White | 23% | 16% | 9% | 4% | 14% | 0.30 | 0.22 | 0.11 | 0.08 | 0.20 |
| Crystal | Crystal | 58% | 35% | 14% | 9% | N/A | 0.60 | 0.39 | 0.15 | 0.10 | N/A |
| FRP Face Sheet Combinations | Visible Light Transmission (VLT) % by ASTM E-972 | Solar Heat Gain Coefficient @ 0° * | |||||||||
| Exterior FRP | Interior FRP | 0.53 U | 0.29 | 0.23 U | 0.22 | 0.14 U | 0.18 | 0.10 U | 0.05 U | 0.53 U | 0.29 | 0.23 U | 0.22 | 0.14 U | 0.18 | 0.10 U | 0.05 U |
| Aqua | White | 29% | 17% | 6% | 4% | 15% | 0.45 | 0.24 | 0.14 | 0.10 | 0.21 |
| Rose | White | 30% | 18% | 6% | 4% | 16% | 0.46 | 0.24 | 0.15 | 0.10 | 0.21 |
| Ice Blue | White | 35% | 20% | 8% | 6% | 21% | 0.54 | 0.28 | 0.17 | 0.12 | 0.26 |
| Greenish Blue | White | 25% | 14% | 5% | 3% | 14% | 0.50 | 0.23 | 0.14 | 0.10 | 0.19 |
| FRP Face Sheet Combinations | Visible Light Transmission (VLT) % by NFRC 202 | Solar Heat Gain Coefficient @ 0° by NFRC 201 | |||||||
| Exterior FRP | Interior FRP | 0.55 U | 0.15 U | 0.08 U | 0.05 U | 0.55 U | 0.15 U | 0.08 U | 0.05 U |
| Crystal | White | 37% | 13% | 5% | N/A | 0.52 | 0.09 | 0.04 | N/A |
| White | White | 23% | 11% | 4%+ | N/A | 0.38 | 0.06 | 0.04* | N/A |
| Crystal | Crystal | 58% | 17% | 6% | N/A | 0.65 | 0.11 | 0.07 | N/A |
| Air Gap Only | Fiberglass ‘Batts’ | Lumira® Aerogel |
U-value SI conversion: 1.0 W/m²K = 0.176 Btu/hr/ft²/°F
