CFR›Title 10›Chapter II›Part 460›Subpart B ContainsSections 460.101–460.104CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart B—Building Thermal Envelope Sections 460.101 § 460.101 Climate zones. 460.102 § 460.102 Building thermal envelope requirements. 460.103 § 460.103 Installation of insulation. 460.104 § 460.104 Building thermal envelope air leakage. Previous A Subpart A—General Next C Subpart C—HVAC, Service Hot Water, and Equipment Sizing