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Table 1 Current insulation levels in existing single-family homes by census division [13] (batt insulation assumed for all).

From: The public health benefits of insulation retrofits in existing housing in the United States

 

NE

MA

SA

ESC

WSC

ENC

WNC

MTN

PA

Ceiling

R-30

R-30

R-11

R-11

R-11

R-19

R-19

R-19

R-1

Above-grade wall

R-11

R-11

R-6

R-6

R-6

R-11

R-11

R-11

R-6

Floor

R-13

R-13

R-3.4

R-3.4

R-3.4

R-11

R-11

R-11

R-5.5

  1. Definitions of census divisions: NE (Northeast): MA, ME, NH, VT, RI, CT; MA (Mid-Atlantic): NY, PA, NJ; SA (South-Atlantic): MD, VA, WV, DC, NC, SC, GA, FL; ESC (East-South-Central): AL, MS, KY, TN; WSC (West-South-Central): TX, OK, AR, LA; ENC (East-North-Central): MI, IL, OH, IN, WI; WNC (West-North-Central): MO, IA, MN, SD, ND, NE, KS; MTN (Mountain): ID, MT, NV, AZ, NM, UT, CO, WY; PA (Pacific): CA, OR, WA. Note: The R-value represents the resistance of the insulation to heat flow, with higher values indicating greater resistance. R-values are given in units of °F.ft2.h/BTU.
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Environmental Health

ISSN: 1476-069X