SECTION N1102  BUILDING THERMAL ENVELOPE
Pursuant to the UCC, delete TABLE N1102.1.2 and replace as follows:
TABLE R-N1102.1.2
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT
a
 
CLIMATE ZONE
FENESTRATION U-FACTORb
SKYLIGHT bU-FACTOR
GLAZED FENESTRATION SHGCb, e
CEILING R-VALUE
WOOD FRAME WALL R- VALUEj
MASS WALL R- VALUE i
FLOOR R- VALUE
BASEMENTcWALL R- VALUE
SLABdR- VALUE & DEPTH
CRAWL SPACEcWALL R- VALUE
1
NR
0.75
0.25
30
13
3/4
13
0
0
0
2
0.40
0.65
0.25
38
13
4/6
13
0
0
0
3
0.35
0.55
0.40
49
20 or
13+5 h
8/13
19
5/13 f
0
5/13
4 except marine
0.35
0.55
0.40
49
20 or
13+5 h
8/13
19
10/13
10/2 ft.
10/13
5 and marine 4
0.32
0.55
NR
49
20 or
13+5 h
13/7
30 g
15/19
10/4 ft.
15/19
6
0.32
0.55
NR
49
20+5 h or
18+6.5
h
15/20
30 g
15/19
10/4 ft.
15/19
7 and 8
0.32
0.55
NR
49
20+5 or
13+10 h
19/21
38 g
15/19
10/4 ft.
15/19
 
For SI: 1 foot = 304.8 mm.
a.   R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity which is less than the label or design thickness of the insulation, the installed R-value of the insulation shall not be less than the R-value specified in the table.
b.   The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration.
   Exception: Skylights may be excluded from glazed fenestration SHGC requirements in Climate Zones 1 through 3 where the SHGC for such skylights does not exceed 0.30.
c.   "15/19" means R-15 continuous insulation on the interior or exterior of the home or R-19 cavity insulation at the interior of the basement wall. "15/19" shall be permitted to be met with R-13 cavity insulation on the interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the home.
   "10/13" means R-10 continuous insulation on the interior or exterior of the home or R-13 cavity insulation at the interior of the basement wall.
d.   R-5 shall be added to the required slab edge R-values for heated slabs. Insulation depth shall be the depth of the footing or 2 feet, whichever is less in Zones 1 through 3 for heated slabs.
e.   There are no SHGC requirements in the Marine Zone.
f.    Basement wall insulation is not required in warm-humid locations as defined by Figure N1101.10 and Table N1101.10.
g.   Or insulation sufficient to fill the framing cavity, R-19 minimum.
h.   The first value is cavity insulation, the second value is continuous insulation, so "13+5" means R-13 cavity insulation plus R-5 continuous insulation.
i.   The second R-value applies when more than half the insulation is on the interior of the mass wall.
j.   R-18 insulation shall be permitted in place of R-20 requirement provided the wall framing factor is twenty percent (20%) or less or exterior walls with 24" o.c. nominal vertical stud spacing.
Pursuant to the UCC, delete Section N1102.4.1.2 and replace as follows:
      R-N1102.4.1.2 Testing. The building or dwelling unit shall be tested and verified as having an air leakage rate not exceeding five air changes per hour. Testing shall be conducted in accordance with ASTM E779 or ASTM E1827 and reported at a pressure of 0.2 inches w.g. (50 Pascals). Where required by the code official, testing shall be conducted by an approved third party. A written report of the results of the test shall be signed by the party conducting the test and provided to the code official. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope.
      During testing:
         1.   Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weatherstripping or other infiltration control measures.
         2.   Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures.
         3.   Interior doors, if installed at the time of the test, shall be open.
         4.   Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed.
         5.   Heating and cooling systems, if installed at the time of the test, shall be turned off.
         6.   Supply and return registers, if installed at the time of the test, shall be fully open.