Requirements are based on Climate Zone of project location:
The U-Factor determines how well your windows insulate your home and the Solar Heat Gain Coefficient (SHGC) is a measure of how much solar-radiated heat energy can transfer through a window. To maximize energy efficiency, window and skylights must be carefully selected to comply with the IECC U-factor and SHGC specifications.
See above language and reference the IECC 2015 with Georgia Amendments for further specification details.
- The above chart references the 2015 IECC with Georgia Amendments. Where local code is more stringent defer to the higher performing U-factor or SHGC.
- Up to 15 square feet of glazing or decorative glass may be exempt from this requirement.
- Floor area must be calculated using RESNET standards for conditioned floor area.
- The builder must present documentation demonstrating compliance of criteria to the EarthCraft Technical Advisor prior to the mid-construction inspection.
- The EarthCraft Technical Advisor will review documentation provided by the builder for compliance of criteria and verify installation during the mid-construction inspection.