Table 5-8 Center-of-Glazing Values Uc – Without Film With Film Uc Uc* Reference Glazing System Film Position Btu/h·ft2·ºF Btu/h·ft2·ºF 3 mm (1/8 in) clear 1.04 Interior 6 mm (1/4 in) clear 1.02 Interior 6 mm (1/4 in) grey 1.02 Interior 3 mm (1/8 in) clear 3 mm (1/8 in) clear 0.55 Interior 7mm (1/4 in) gap 6 mm (1/4 in) clear 6 mm (1/4 in) clear 0.47 Interior 12.7mm (1/2 in) gap 6mm (1/4 in) grey 6 mm (1/4 in) clear 0.47 Interior 12.7mm (1/2 in) gap * Uc Film’ shall be calculated using reference glazing with film to be rated. ‘with Table 5-9 Values of U-factor for Reference and Applied Films – U-factor Reference Product Btu/h·ft2·ºF Operator Type Reference Reference Glazing no film with film* Residential Fixed Aluminum 3mm (1/8 in) clear 1.081 6mm (1/4 in) 1.021 Non-Residential Aluminum Window-wall 6mm (1/4 in) grey 1.021 3mm (1/8 in) clear Residential Fixed Aluminum 3mm (1/8 in) clear 0.700 7mm (9/32 in) gap 6mm (1/4 in) clear Non-Residential 6mm (1/4 Aluminum in) clear 0.588 Window-wall 12.7mm (1/2 in) gap
Table 5-8 – Center-of-Glazing Values Uc Reference Glazing System Without Film With Film Uc Btu/h·ft2·ºF Film Position Uc* Btu/h·ft2·ºF 3 mm (1/8 in) clear 1.04 Interior 6 mm (1/4 in) clear 1.02 Interior 6 mm (1/4 in) grey 1.02 Interior 3 mm (1/8 in) clear 3 mm (1/8 in) clear 7mm (1/4 in) gap 0.55 Interior 6 mm (1/4 in) clear 6 mm (1/4 in) clear 12.7mm (1/2 in) gap 0.47 Interior 6mm (1/4 in) grey 6 mm (1/4 in) clear 12.7mm (1/2 in) gap 0.47 Interior * Uc ‘with Film’ shall be calculated using reference glazing with film to be rated. Table 5-9 – Values of U-factor for Reference and Applied Films Reference Product U-factor Btu/h·ft2·ºF Operator Type Reference Reference Glazing no film with film* Residential Fixed Aluminum 3mm (1/8 in) clear 1.081 Non-Residential Window-wall Aluminum 6mm (1/4 in) 1.021 6mm (1/4 in) grey 1.021 Residential Fixed Aluminum 3mm (1/8 in) clear 3mm (1/8 in) clear 7mm (9/32 in) gap 0.700 Non-Residential Window-wall Aluminum 6mm (1/4 in) clear 6mm (1/4 in) clear 12.7mm (1/2 in) gap 0.588
NFRC_100-2014_E0A0.docx