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236 PART 4 N Energy Conservation r' 4 CHANGE TYNE: Clarification No"Fo 02 N f Sealing Building CHANGE SUMMARY: Attic access openings and rim joist junctions have been added to the list of specific locations requiring sealing to 4 Therm Envelop prevent air infiltration. r�? 2009 CODE: N1102.4.1 Building Thermal Envelope. The build 7 ing thermal envelope shall be durably sealed to limit infiltration, Thew sealing methods between dissimilar materials shall allow for di re tial expansion and contraction. The following shall be caulked, gasp ise sealed with an air barrier mated keted, weatherstripped or otherw rial, suitable film or solid material. ,, 1. All joints, seams and penetrations. 2.. Site -built windows, doors, and skylights.. z 3. Openings between window and door assemblies and their re- spective jambs and framing. 4. Utility penetrations.. f4 5. Dropped ceilings or chases adjacent to the thermal envelope t : 6. Knee walls. " VI �� wq $ Se d, L e,601 7. Walls and ceilings separating the garage from conditioned spaces J F 8. Behind tubs and showers on exterior walls. 44 e. CO� 9. Common walls between dwelling units, r >= G 0 1 - 1 j2 C, 10. Attic access openings. 11. Rim joist junction. -1812. Other sources of infiltration. Chimneys r A r► J_ Co Recessed U j Attic hatch tr lights w' i 'fix I Ceiling Rim joist , Windows corners unctions S S require 5 Electrical ®: Doors sealing :, 3 outlets Mr Pr - � T - - —° Basement window arm:_ n Duct Sill N E 6 a © seal °. : }. R Sill plates f Typical sources of air leakage =' N l Fiif4