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RN-2012-00069_0004.tif
t aid; 236 PART 4 is Energy Conservation .L� CHANGE TYPE: Clarification N' 1 02 CHANGE SUMMARY: Attic access openings and rim joist junctions. S ealing the 1l ' have been added to the list of specific locations requiring sealing f, Thermal Envelope prevent air infiltration. 2009 CODE: 11102.4.1 Building Thermal Envelope. The buildla' ing thermal envelope shall be durably sealed to limit infiltration. The sealing methods between dissimilar materials shall allow for differed tial expansion and contraction. The following shall be caulked, gases keted, weatherstripped or otherwise sealed with an air barrier mail- ., rial, suitable film. or solid material.; 1. All joints, seams and penetrations, y; 2; Site -built windows, doors, and skylights.. 3. Openings between window and door assemblies and their re -k spective jambs and framing. t ?4 4. Utility penetrations.. e (` 5. Dropped ceilings or chases adjacent to the thermal envelope:; 6. Knee walls. z A s e 't L e� 7. Walls and ceilings separating the garage from conditioned spat. _ 8. Behind tubs and showers on exterior walls. �2 i2 Code ' 9. Common walls between dwelling units. a G 6 9 C 10. Attic access openings. 11. Rim joist junction. — 4812. Other sources of infiltration. F :aK Chimneys }= 0 '; N1 c`, Co nn a,w� Recessed U C atch Attic h lights � ; r.;�- '�. Rh_ J1 m .. joist� Ceiling , Rim joist Windows Y 'r' �_ �, corners junctions x. ,� o Gt 7 require{ y: S e Q- GQ ce S S ° sealing ' Electrical ®: Doors s - outlets Basement r` window Y S�•;qp ill Duct �1 J N 6 $ 6 ©$ seal: =. T Sill plates �.. rv. �: ra! �aa ::.ea_s;rvs�.�.�•= .•�t:Ra;.� >�• �`ri�r' • Typical sources of air leakage .E� j