Total U UA Cost* ∆$ Total U UA Cost* ∆$

22 0.0607 56.10 1,756.07 $ — 0.0565 88.63 3,038.74 $ —

30 0.0446 41.22 2,165.37 $ $ 409.30 0.0432 67.75 3,684.88 $ $ 646.14

38 0.0367 33.88 2,537.24 $ $ 371.87 0.0361 56.65 4,201.84 $ $ 516.96

38 (XPS) 0.0367 33.88 2,664.12 $ $ 498.75 0.0361 56.65 4,384.58 $ $ 699.70

Total U UA Cost* ∆$ Total U UA Cost* ∆$

11 0.1025 107.93 1,292.00 $ — 0.1025 106.19 1,271.14 $ —

13 0.0943 99.25 1,353.86 $ $ 61.86 0.0943 97.64 1,332.00 $ $ 60.86

19 0.0680 71.60 1,902.79 $ $ 548.93 0.0680 70.45 1,872.07 $ $ 540.07

21 HD 0.0628 66.08 2,029.92 $ $ 127.13 0.0628 65.01 1,997.15 $ $ 125.08

13+5 0.0613 64.50 2,815.69 $ $ 785.77 0.0613 63.46 2,782.76 $ $ 785.61

21 HD+5 0.0458 48.17 3,491.75 $ $ 676.06 0.0458 47.40 3,447.90 $ $ 665.15

Total U UA Cost* ∆$ Total U UA Cost* ∆$

11 0.0891 82.31 903.95 $ — 0.0891 139.69 1,454.17 $ —

13‡ 0.0776 71.69 945.81 $ $ 41.86 0.0776 121.66 1,525.21 $ $ 71.03

19 0.0560 51.72 1,020.06 $ $ 74.25 0.0560 87.77 1,651.20 $ $ 126.00

22 0.0491 45.36 1,143.68 $ $ 123.63 0.0491 76.97 1,861.00 $ $ 209.79

30 0.0322 29.75 1,512.01 $ $ 368.32 0.0322 50.49 2,459.43 $ $ 598.43

30 (XPS) 0.0322 29.75 1,660.09 $ $ 516.40 0.0322 50.49 2,616.27 $ $ 755.27

38 (XPS) 0.0270 24.98 1,815.73 $ $ 303.72 0.0270 42.40 2,880.39 $ $ 420.96

‡ Cost for R-13 blanket extrapolated

Cost* ∆$ Cost* ∆$

1.08 0.70 1,362.64 $ — 2,307.89 $ —

0.50 0.60 2,312.57 $ $ 949.94 $ 3,916.79 $ 1,608.90

0.49 0.71 2,402.93 $ $ 90.35 $ 4,069.82 $ 153.03

0.35 0.33 2,717.95 $ $ 315.02 $ 4,603.37 $ 533.54

0.32 0.33 2,796.09 $ $ 78.14 $ 4,735.72 $ 132.35

0.35 0.25 2,808.30 $ $ 12.21 $ 4,756.40 $ 20.68

0.31 0.25 2,881.56 $ $ 73.26 $ 4,880.48 $ 124.08

0.31 0.31 3,235.65 $ $ 354.09 $ 5,480.20 $ 599.72

0.30 0.25 3,308.91 $ $ 73.26 $ 5,604.28 $ 124.08

*Cost of materials to the consumer

∆$ Incremental cost

Vinyl Frame with Enhanced Low-E Dual 

Glazing

Vinyl Frame with Low-E Dual Glazing 

+ Argon + Enhanced Glass Spacer

Vinyl Frame with Enhanced Low-E Dual 

Glazing + Argon

Vinyl Frame with Enhanced Low-E Dual 

Glazing + Argon + Enhanced Glass 

Spacer

WINDOW SUMMARY

Aluminum Frame with Clear Single 

Glazing + Storm

Vinyl Frame with Clear Dual Glazing

Vinyl Frame with Low-E Dual Glazing

Vinyl Frame with Low-E Dual Glazing + 

Argon

Description SHGC U-value

Single Double

Aluminum Frame with Clear Single 

Glazing

CEILING SUMMARY

FLOOR SUMMARY

R

Single Double

R

Single Double

WALL SUMMARY

R

Single Double
Prototype Home Characteristics

SINGLE DOUBLE

Home Size 14x66 28x56

Perimeter (ft) 160 168

Wall Height (ft) 7.5 7.5

Gross Wall Area (ft2

) 1200 1260

Opaque wall area (ft2

) 1053 1036

Window area (ft2

) 111 188 12% of floor area

Door area (ft2

) 36 36

Ceiling Area (ft2

) 924 1568

Floor Area (ft2

) 924 1568

Total Envelope Area 3048 4396
R-22

Fraction of ceiling with reduced insulation thickness 25.45%

Description Cost

Insulation coverage None Full Partial Full Partial

Percent of ceiling area 4.00% 4.47% 1.5% 67.09% 22.9%

R-value of non-insulation materials 3.555 3.555 3.555 1.675 1.675

Blown Fiberglass Insulation R-value 0 17.35 Variable 22 Variable $ 275.16 

Total path R-value 3.555 20.905 9.79 23.675 13.14

Path U-factor 0.281 0.048 0.102 0.042 0.076

Truss 16" o.c. 2.5" heel, 23.5" ridge $ 1,295.91 

Other materials costs $ 184.99 

OVERALL CEILING U-value 0.0607 UA ceiling 56.10

CEILING COST $ 1,756.07 

R-30

Fraction of ceiling with reduced insulation thickness 23.55%

Description Cost

Insulation coverage None Full Partial Full Partial

Percent of ceiling area 4.00% 4.59% 1.4% 68.81% 21.2%

R-value of non-insulation materials 3.555 3.555 3.555 1.675 1.675

Blown Fiberglass Insulation R-value 0 25.35 Variable 30 Variable $ 342.10 

Total path R-value 3.555 28.905 19.81 31.675 22.71

Path U-factor 0.281 0.035 0.050 0.032 0.044

Truss 16" o.c. 5.5" heel, 26.5" ridge $ 1,527.79 

Other materials costs $ 295.48 

OVERALL CEILING U-value 0.0446 UA ceiling 41.22

CEILING COST $ 2,165.37 

R-38 (dense pack at eaves)

Fraction of ceiling with reduced insulation thickness 26.18%

Description Cost

Insulation coverage None Full Partial Full Partial

Percent of ceiling area 4.00% 4.43% 1.6% 66.44% 23.6%

R-value of non-insulation materials 3.555 3.555 3.555 1.675 1.675

Blown Fiberglass Insulation R-value 0 33.35 Variable 38 Variable $ 504.47 

Total path R-value 3.555 36.905 29.54 39.675 33.97

Path U-factor 0.281 0.027 0.034 0.025 0.029

Truss 16" o.c. 7.5" heel, 28.5" ridge $ 1,643.73 

Other materials costs $ 389.04 

OVERALL CEILING U-value 0.0367 UA ceiling 33.88

CEILING COST $ 2,537.24 

Foam sheathing related costs $ 126.89 

CEILING COST (XPS) $ 2,664.12 

SINGLE-SECTION

At Trusses (Bottom Chord) Between Trusses

At Trusses (Bottom Chord) Between Trusses

At Trusses (Bottom Chord) Between Trusses

CEILING
R-22

Fraction of ceiling with reduced insulation thickness 13.02%

Description Cost

Insulation coverage None Full Partial Full Partial

Percent of ceiling area 4.00% 5.22% 0.8% 78.28% 11.7%

R-value of non-insulation materials 3.555 3.555 3.555 1.675 1.675

Blown Fiberglass Insulation R-value 0 17.35 Variable 22 Variable $ 490.83 

Total path R-value 3.555 20.905 9.79 23.675 13.14

Path U-factor 0.281 0.048 0.102 0.042 0.076

Truss 16" o.c. 2.5" heel, 44.5" ridge $ 2,334.73 

Other materials costs $ 213.18 

OVERALL CEILING U-value 0.0565 UA ceiling 88.63

CEILING COST $ 3,038.74 

R-30

Fraction of ceiling with reduced insulation thickness 12.05%

Description Cost

Insulation coverage None Full Partial Full Partial

Percent of ceiling area 4.00% 5.28% 0.7% 79.16% 10.8%

R-value of non-insulation materials 3.555 3.555 3.555 1.675 1.675

Blown Fiberglass Insulation R-value 0 25.35 Variable 30 Variable $ 639.57 

Total path R-value 3.555 28.905 19.81 31.675 22.71

Path U-factor 0.281 0.035 0.050 0.032 0.044

Truss 16" o.c. 5.5" heel, 47.5" ridge $ 2,733.31 

Other materials costs $ 312.00 

OVERALL CEILING U-value 0.0432 UA ceiling 67.75

CEILING COST $ 3,684.88 

R-38 (dense pack at eaves)

Fraction of ceiling with reduced insulation thickness 13.40%

Description Cost

Insulation coverage None Full Partial Full Partial

Percent of ceiling area 4.00% 5.20% 0.8% 77.94% 12.1%

R-value of non-insulation materials 3.555 3.555 3.555 1.675 1.49

Blown Fiberglass Insulation R-value 0 33.35 Variable 38 Variable $ 876.36 

Total path R-value 3.555 36.905 29.54 39.675 33.97

Path U-factor 0.281 0.027 0.034 0.025 0.029

Truss 16" o.c. 7.5" heel, 49.5" ridge $ 2,932.60 

Other materials costs $ 392.89 

OVERALL CEILING U-value 0.0361 UA ceiling 56.65

CEILING COST $ 4,201.84 

Foam sheathing related costs $ 182.74 

CEILING COST (XPS) $ 4,384.58 

DOUBLE-SECTION

At Trusses (Bottom Chord) Between Trusses

At Trusses (Bottom Chord) Between Trusses

At Trusses (Bottom Chord) Between Trusses

CEILING
Frame Insulation

Fraction of wall 25% 75%

Constant R-value 1.505 1.505

R-11

Description Frame Insulation Cost Cost

2” × 4” 16" o.c. wood stud 4.375 0 $ 1,084.55 1,067.05$ 

R-11 fiberglass batt 0 11 $ 207.45 $ 204.10

Path R-value 5.88 12.505

Path U-value 0.17 0.08

OPAQUE WALL U-value 0.1025 UA wall 107.93 106.19

OPAQUE WALL COST $1,292.00 $1,271.14

R-13

Description Frame Insulation Cost Cost

2” × 4” 16" o.c. wood stud 4.375 0 $ 1,084.55 1,067.05$ 

R-13 fiberglass batt 0 13 $ 269.30 $ 264.96

Path R-value 5.88 14.505

Path U-value 0.17 0.069

OPAQUE WALL U-value 0.0943 UA wall 99.25 97.64

OPAQUE WALL COST $1,353.86 $1,332.00

R-19

Description Frame Insulation Cost Cost

2” × 6” 16" o.c. wood stud 6.875 0 $ 1,550.38 1,525.35$ 

R-19 fiberglass batt 0 18 $ 352.41 $ 346.72

Path R-value 8.38 19.505

Path U-value 0.119 0.051

OPAQUE WALL U-value 0.0680 UA wall 71.60 70.45

OPAQUE WALL COST $1,902.79 $1,872.07

R-21 HD (High Density)

Description Frame Insulation Cost Cost

2” × 6” 16" o.c. wood stud 6.875 0 $ 1,550.38 1,525.35$ 

R-21 HD fiberglass batt 0 21 $ 479.54 $ 471.79

Path R-value 8.38 22.505

Path U-value 0.119 0.044

OPAQUE WALL U-value 0.0628 UA wall 66.08 65.01

OPAQUE WALL COST $2,029.92 $1,997.15

SINGLE DOUBLE

SINGLE DOUBLE

SINGLE DOUBLE

SINGLE DOUBLE

WALLS
Frame Insulation

Fraction of wall 25% 75%

Constant R-value 1.505 1.505

R-13 + R-5/inch 1" XPS

Description Frame Insulation Cost Cost

2” × 4” 16" o.c. wood stud 4.35 0 $ 1,067.05$ 1,084.55

R-13 fiberglass batt 0 13 $ 264.96 269.30 $ 

R-5/inch 1" XPS (incl. fasteners) 5 5 $ 1,450.76$ 1,461.83

Path R-value 10.855 19.505

Path U-value 0.092 0.051

OPAQUE WALL U-value 0.0613 UA wall 64.50 63.46

OPAQUE WALL COST $2,815.69 $2,782.76

R-21 HD + R-5/inch 1" XPS

Description Frame Insulation Cost Cost

2” × 6” 16" o.c. wood stud 6.875 0 $ 1,525.35$ 1,550.38

R-21 HD fiberglass batt 0 21 $ 471.79 479.54 $ 

R-5/inch 1" XPS (incl. fasteners) 5 5 $ 1,450.76$ 1,461.83

Path R-value 13.38 27.505

Path U-value 0.075 0.036

OPAQUE WALL U-value 0.0458 UA wall 48.17 47.40

OPAQUE WALL COST $3,491.75 $3,447.90

SINGLE DOUBLE

SINGLE DOUBLE

WALLS
R-11 (blanket)

heated subfloor Full Partial Full Partial Cost Cost

Fraction of floor area 0.00% 5.00% 50.00% 45.00%

Constant R-value 1.84 1.84 1.84

R-11 Roll insulation 2.75 11 9.625 $ 239.73 $ 406.82

Floor joists (2×6) 0 00 $ 913.06 538.05 $ 

Path R-value 4.59 12.84 11.465

Path U-value 0.2179 0.0779 0.0872

Other materials costs $ 126.16 $ 134.29

FLOOR U-value 0.0891 UA Floor 82.31 139.69

FLOOR COST $ 903.95 $ 1,454.17 

R-13 (blanket)

heated subfloor Full Partial Full Partial Cost Cost

Fraction of floor area 0.00% 5.00% 50.00% 45.00%

Constant R-value 0 1.84 1.84 1.84

R-13 Roll insulation 3.25 13 11.375 $ 281.59 $ 477.86

Floor joists (2×6) 0 00 $ 913.06 538.05 $ 

Path R-value 5.09 14.84 13.215

Path U-value 0.1965 0.0674 0.0757

Other materials costs $ 126.16 $ 134.29

FLOOR U-value 0.0776 UA Floor 71.69 121.66

FLOOR COST $ 945.81 $ 1,525.21 

R-19 (blanket)

heated subfloor Full Partial Full Partial Cost Cost

Fraction of floor area 0.00% 5.00% 50.00% 45.00%

Constant R-value 0 1.84 1.84 1.84

R-19 Roll insulation 4.75 19 16.625 $ 355.84 $ 603.85

Floor joists (2×6) 0 00 $ 913.06 538.05 $ 

Path R-value 6.59 20.84 18.465

Path U-value 0.1517 0.048 0.0542

Other materials costs $ 126.16 $ 134.29

FLOOR U-value 0.0560 UA Floor 51.72 87.77

FLOOR COST $ 1,020.06 $ 1,651.20 

R-22 (blanket)

heated subfloor Full Partial Full Partial Cost Cost

Fraction of floor area 0.00% 5.00% 50.00% 45.00%

Constant R-value 1.84 1.84 1.84

R-11 Roll insulation (x2) 5.5 22 19.25 $ 813.65 479.47 $ 

Floor joists (2×6) 0 00 $ 913.06 538.05 $ 

Path R-value 7.34 23.84 21.09

Path U-value 0.1362 0.0419 0.0474

Other materials costs $ 126.16 $ 134.29

FLOOR U-value 0.0491 UA Floor 45.36 76.97

FLOOR COST $ 1,143.68 $ 1,861.00 

Frame Non-Frame

Insulation

Insulation Insulation SINGLE DOUBLE

Insulation Insulation SINGLE DOUBLE

Insulation Insulation SINGLE DOUBLE

Insulation SINGLE DOUBLE

FLOOR
R-30 (batt + blanket)

unheated subfloor Full Partial Full Partial Cost Cost

Fraction of floor area 5.00% 5.00% 45.00% 45.00%

Constant R-value 3.66 3.66 3.66 3.66

R-11 Roll insulation 11 2.75 11 9.625 $ 239.73 $ 406.82

Floor joists (2×8) 9.38 9.38 0 0 $ 1,260.39 742.73 $ 

Air space above roll 1.14 0 1.14 0

R-19 Batt insulation 0 0 19 17.67 $ 361.33 $ 613.17

Air space above batt 0 0 1.14 0

Path R-value 25.175 15.785 35.94 30.955

Path U-value 0.0397 0.0634 0.0278 0.0323

Other materials costs 168.21 $ 179.06 $ 

FLOOR U-value 0.0322 UA Floor 29.75 50.49

FLOOR COST $ 1,512.01 $ 2,459.43 

Foam sheathing related costs $ 148.08 $ 156.84 

FLOOR COST (XPS) $ 1,660.09 $ 2,616.27 

R-38 (batt + blanket)

unheated subfloor Full Partial Full Partial Cost Cost

Fraction of floor area 5.00% 5.00% 45.00% 45.00%

Constant R-value 3.66 3.66 3.66 3.66

R-19 Roll insulation 19 4.75 19 16.625 $ 395.38 $ 670.95

Floor joists (2×8) 9.38 9.38 0 0 $ 1,260.39 742.73 $ 

Air space above roll 1.14 0 1.14 0

R-19 Batt insulation 0 0 19 15.77 $ 361.33 $ 613.17

Air space above batt 0 0 1.14 0

Path R-value 33.175 17.785 43.94 36.055

Path U-value 0.0301 0.0562 0.0228 0.0277

Other materials costs 168.21 $ 179.06 $ 

Foam sheathing related costs $ 148.08 $ 156.84 

FLOOR U-value 0.0270 UA Floor 24.98 42.40

FLOOR COST (XPS) $ 1,815.73 $ 2,880.39 

Frame Non-Frame

Insulation Insulation SINGLE DOUBLE

Insulation Insulation SINGLE DOUBLE

FLOOR