Thermal Performance

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thermal performanceWith a wide range of insulation packages, from 0.29 to 0.05 U (1.65 to 0.28 W/m2k), Kalwall’s exceptional thermal performance options are unmatched in the fenestration industry. Kalwall’s ability to tailor visible light transmission (VLT), thermal insulation values and solar heat gain control properties allow specifiers to customize properties based on light level targets, climate zones and building type, as well as building orientation and microclimatic considerations. No other fenestration product performs better at reducing HVAC heating and cooling loads while harvesting daylight and managing solar gain. Both the Kalwall panel and the Clamp-tite™ fastening system can be specified as either standard or thermally-broken (TB) to eliminate thermal bridging while providing unmatched condensation resistance factors (CRF) of 80 CRF or better. Kalwall provides the highest insulating, light-transmitting products on the market today including Kalwall+Lumira® aerogel for uncompromised performance – even in the most extreme climates.

 


 

kalwall-igu-thermal-chart

 

Performance Data: 2-3/4” (70mm) Panel

FRP Face Sheet Combinations Visible Light Transmission (VLT) % 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
Crystal White 35% 20% 12% 8% 20% 0.52 0.28 0.17 0.13 0.25
White White 20% 15% 8% 5% 14% 0.38 0.23 0.15 0.11 0.18
Crystal Crystal 50% 30% 15% 10% N/A 0.65 0.33 0.18 0.13 N/A
Aqua White 29% 17% 6% 4% 15% 0.45 0.24 0.14 0.1 0.21
Rose White 30% 18% 6% 4% 16% 0.46 0.24 0.15 0.1 0.21
Ice Blue White 35% 20% 8% 6% 21% 0.54 0.28 0.17 0.12 0.26
Greenish Blue Crystal 25% 14% 5% 3% 14% 0.5 0.23 0.14 0.1 0.19

 

Performance Data: 4” (100mm) Panel

FRP Face Sheet Combinations Visible Light Transmission (VLT) % Solar Heat Gain Coefficient @ 0
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 35% 14% 7% N/A 0.52 0.09 0.04 N/A
White White 20% 12% 5% N/A 0.38 0.06 0.04 N/A
Crystal Crystal 50% 17% 8% N/A 0.65 0.10 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

U-values shown in bold denote thermally-broken grid core panels.
Approximate Visible light transmission (VLT) values by ASTM E-972. VLT values 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.
Shading Coefficient (SC) is equal to 1.15 times the Solar Heat Gain Coefficient (SHGC).