Sunrooms enclosing conditioned space shall meet the fenestration requirements of this code.
Exception: For sunrooms with thermal isolation and enclosing conditioned space in Climate Zones 2 through 8, the maximum fenestration U-factor shall be 0.45 and the maximum skylight U-factor shall be 0.70.
New fenestration separating the sunroom with thermal isolation from conditioned space shall meet the building thermal envelope requirements of this code.