RN-2012-00055_0005.tif !
236 PART 4 111 Energy Conservation
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CHANGE TYPE: Clarification
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CHANGE SUMMARY: Attic access openings and rim joist junctions
Sealing of the Building
have been added to the list of specific locations requiring sealing to
Thermal Envelope prevent air infiltration. `
2009 CODE: N1102.4.1 Building Thermal Envelope. The build=
ing thermal envelope shall be durably sealed to limit infiltration. The f
sealing methods between dissimilar materials shall allow for differen=
tial expansion and contraction. The following shall be caulked, gas -'
keted, weatherstripped or otherwise sealed with an air barrier mate=-;.
rial, suitable film or solid material. =
1. All joints, seams and penetrations.
2: Site -built windows, doors, and skylights.
3. Openings between window and door assemblies and their re
spective jambs and framing.
�- �
4. Utility penetrations.
5. Dropped ceilings or chases adjacent to the thermal envelope ,
6. Knee walls. r
- w 3 Se L � � 7. Walls and ceilings separating the garage from conditioned
s s
U, g P g g g P
8. Behind tubs and showers on exterior walls.
S pe cD 9. Common walls between dwelling units.
a 0 g 71 k C ) 10. Attic access openings.
11. Rim joist junction. r}
1012. Other sources of infiltration.
? nn Chimneys
)Ut�O�Ce Nye •tvJ�Q- C° r"'�av��' Recessed
Attic hatch lights
S "
Ceiling Rim joist
Windows corners junctions X
Y
e CC- S require � t
Electrical ® Doors sealing
5 : f
outlets
Basement y
window
Duct Sill
L A 8 0 0 8 seal = i
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Sill plates
Typical sources of air leakage