What are the U-factors for your ACRYLITE® acrylic sheet products?

Thermal Conductivity

The U-factor, or overall heat transmission coefficient, is the amount of heat which will pass through one square foot of a specific thickness of material per hour. U factors depend on specific conditions and differ for summer and winter.

U-Factors Btu/(hour)(sq.ft.)(F)

Vertical InstallationHorizontal Installation
Sheet Thickness Summer
Conditions
Winter
Conditions
Summer
Conditions
Winter
Conditions
3.0 mm (1/8”) 0.98 1.06 0.79 1.15
4.5 mm (3/16”) 0.94 1.02 0.76 1.09
6.0 mm (1/4”) 0.90 0.97 0.74 1.04
9.5 mm (3/8”) 0.83 0.89 0.69 0.95
12.0 mm (1/2”) 0.76 0.81 0.65 0.87
24.0 mm (1”) 0.59 0.62 0.53 0.66
31.8 mm (1.25”) 0.53 0.55 0.47 0.57
50.8 mm (2.00”) 0.40 0.42 0.37 0.43

Total Heat Loss or Gain through a Window Due to Conduction/Convection

Heat Loss (Btu/hr) = Window Area (sq. ft.) x [Indoor Temp(°F) - Outdoor Temp(°F)] x U-Factor

For glazing applications, there are some things that should be taken into consideration when designing the framework: thermal contraction and expansion, moisture expansion and contraction, and foreshortening due to deflection under load.

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