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TABLE A.5.205.1-A
DEFAULT FENESTRATION PRODUCT U-FACTORS
FRAME PRODUCT TYPE SINGLE PANE
U-FACTOR
DOUBLE PANE1
U-FACTOR
GLASS BLOCK2
U-FACTOR
Metal Operable 1.28 0.79 0.87
Fixed 1.19 0.71 0.72
Greenhouse/garden window 2.26 1.40 N.A.
Doors 1.25 0.77 N.A.
Skylight 1.98 1.30 N.A.
Metal, thermal break Operable N.A. 0.66 N.A.
Fixed N.A. 0.55 N.A.
Greenhouse/garden window N.A. 1.12 N.A.
Doors N.A. 0.59 N.A.
Skylight N.A. 1.11 N.A.
Nonmetal Operable 0.99 0.58 0.60
Fixed 1.04 0.55 0.57
Greenhouse/garden window 0.99 0.53 N.A.
Doors 1.94 1.06 N.A.
Skylight 1.47 0.84 N.A.
N.A. = Not applicable.
  1. For all dual-glazed fenestration products, adjust the listed U-factors as follows:
    1. Add 0.05 for products with dividers between panes if spacer is less than 7/16 inch wide.
    2. Add 0.05 to any product with true divided lite (dividers through the panes).
  2. Translucent or transparent panels shall use glass blocks.
TABLE A.5.205.1-B
DEFAULT SOLAR HEAT GAIN COEFFICIENT (SHGC)
FRAME PRODUCT TYPE GLAZING TOTAL WINDOW SHGC
Single Pane Double Pane Glass Block1
Metal Operable Clear 0.80 0.70 0.70
Fixed Clear 0.83 0.73 0.73
Operable Tinted 0.67 0.59 N.A.
Fixed Tinted 0.68 0.60 N.A.
Metal, thermal break Operable Clear N.A. 0.63 N.A.
Fixed Clear N.A. 0.69 N.A.
Operable Tinted N.A. 0.53 N.A.
Fixed Tinted N.A. 0.57 N.A.
Nonmetal Operable Clear 0.74 0.65 0.70
Fixed Clear 0.76 0.67 0.67
Operable Tinted 0.60 0.53 N.A.
Fixed Tinted 0.63 0.55 N.A.
N.A. = Not applicable.
  1. Translucent or transparent panels shall use glass block values.
A5.205.1.1 Certification of Fenestration Products and Exterior Doors Other Than Field-Fabricated
Any fenestration product and exterior door, other than field-fabricated fenestration products and field-fabricated exterior doors, may be installed only if the manufacturer has certified to the California Energy Commission or if an independent certifying organization approved by the Commission has certified that the product complies with all of the applicable requirements of this subsection.
A5.205.1.1.1 Air Leakage
Manufactured fenestration products and exterior doors shall have air infiltration rates not exceeding 0.3 cfm/ft2 of window area, 0.3 cfm/ft2 of door area for residential doors, 0.3 cfm/ft2 of door area for nonresidential single doors (swinging and sliding) and 1.0 cfm/ft2 for nonresidential double doors (swinging), when tested according to NFRC-400 or ASTM E283 at a pressure differential of 75 pascals (or 1.57 pounds/ft2), incorporated herein by reference.
A5.205.1.1.2 U -Factor
A fenestration product's U-factor shall be rated in accordance with NFRC 100 or the applicable default U-factor set forth in Table A.5.205.1-A.
Exception: If the fenestration product is a skylight or is site-built fenestration in a building covered by the nonresidential standards with less than 10,000 square feet of site-built fenestration, the default U-factor may be calculated as set forth in Reference Nonresidential Appendix NA6 of the California Energy Commission 2008 Building Energy Efficiency Standards for Residential and Nonresidential Buildings.
A5.205.1.1.3 SHGC
A fenestration product's SHGC shall be rated in accordance with NFRC 200 for site-built fenestration or use the applicable default SHGC set forth in Table A5.205.1-B.
Exception: If the fenestration product is a skylight or is site-built fenestration in a building covered by the nonresidential standards with less than 10,000 square feet of site-built fenestration, the default SHGC may be calculated as set forth in Reference Nonresidential Appendix NA6 of the California Energy Commission 2008 Building Energy Efficiency Standards for Residential and Nonresidential Buildings.
A5.205.1.1.4 Labeling
Fenestration products shall:
  1. Have a temporary label (or label certificate for site- built fenestration) meeting the requirements of Section 10-111(a)1 of Title 24, Part 1 not to be removed before inspection by the enforcement agency, listing the certified U-factor and SHGC and certifying that the air leakage requirements of Section A5.205.1.1.1 are met for each product line; and
  2. Have a permanent label (or label certificate for site-built fenestration) meeting the requirements of Section 10-111(a)2 of Title 24, Part 1 if the product is rated using NFRC procedures.
A5.205.1.1.5 Fenestration Acceptance Requirements
Before an occupancy permit is granted, site-built fenestration products in other than low-rise residential buildings shall be certified as meeting the Acceptance Requirements for Code Compliance, as specified by the Reference Nonresidential Appendix NA7 of the California Energy Commission 2008 Building Energy Efficiency Standards for Residential and Nonresidential Buildings to ensure that site-built fenestration meet Standards requirements, including a matching label certificate for each product installed and be readily accessible at the project location. A Certificate of Acceptance shall be submitted to the enforcement agency that certifies that the fenestration product meets the acceptance requirements.
Exception: Fenestration products removed and reinstalled as part of a building alteration or addition.
A5.205.1.2 Installation of Field-Fabricated Fenestration and Exterior Doors
Field-fabricated fenestration and field-fabricated exterior doors may be installed only if the compliance documentation has demonstrated compliance for the installation using U-factors from Table A5.205.1-A and SHGC values from Table A5.205.1-B. Field-fabricated fenestration and field-fabricated exterior doors shall be caulked between the fenestration products or exterior door and the building and shall be weatherstripped.
Exception: Unframed glass doors and fire doors need not be weatherstripped or caulked.

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