Retrofit Measures for Finished Roof

Here you will find the data for Finished Roof measures available in the National Residential Efficiency Measures Database. Each measure consists of a before-component, an after-component, and the estimated cost to implement the measure. The measures are listed alphabetically based upon the name of the before-component. Where multiple costs are indicated they must be combined to obtain total measure cost (e.g., fixed (\$) and normalized (\$/sf) costs).

Cost Drivers

There are many factors that influence the ultimate cost of Finished Roof measures. The application of the average measure costs displayed below to any particular home is discouraged. Examples of the kinds of issues that can influence the cost of Finished Roof measures include:
• Prevailing local wages
• Drive time
• Local code requirements
• Roof slope
• Access
• Presence/condition/type of existing insulation
• Existing construction and materials
• Moisture issues present
• Condition of existing electrical system
• Presence of hazardous materials

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 9.25 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 9.25 in
• Cavity Insulation Nominal R-value: 38.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 15.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 3.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 2.6 - 4.53.6

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 9.25 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 9.25 in
• Cavity Insulation Nominal R-value: 38.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 20.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 4.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 3 - 5.14.1

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 9.25 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 9.25 in
• Cavity Insulation Nominal R-value: 38.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 25.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 5.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 3.4 - 5.84.6

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 11.25 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 11.25 in
• Cavity Insulation Nominal R-value: 49.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 15.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 3.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 3 - 54

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 11.25 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 11.25 in
• Cavity Insulation Nominal R-value: 49.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 20.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 4.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 3.3 - 5.74.5

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 11.25 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 11.25 in
• Cavity Insulation Nominal R-value: 49.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 25.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 5.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 3.7 - 6.35

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 3.5 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 3.5 in
• Cavity Insulation Nominal R-value: 13.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 15.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 3.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 1.9 - 3.32.6

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 3.5 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 3.5 in
• Cavity Insulation Nominal R-value: 13.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 20.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 4.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C)
• Exceeds IECC 2012 (1A, 1B, 1C)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 2.3 - 3.93.1

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 3.5 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 3.5 in
• Cavity Insulation Nominal R-value: 13.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 25.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 5.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C)
• Meets IECC 2009 (4A, 4B, 4C, 5A, 5B, 5C)
• Exceeds IECC 2012 (1A, 1B, 1C)
• Meets IECC 2012 (2A, 2B, 2C, 3A, 3B, 3C)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 2.7 - 4.53.6

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 5.5 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 5.5 in
• Cavity Insulation Nominal R-value: 19.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 15.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 3.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C)
• Exceeds IECC 2012 (1A, 1B, 1C)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 2.1 - 3.62.9

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 5.5 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 5.5 in
• Cavity Insulation Nominal R-value: 19.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 20.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 4.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 2.5 - 4.23.3

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 5.5 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 5.5 in
• Cavity Insulation Nominal R-value: 19.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 25.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 5.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 2.8 - 4.83.8

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 7.25 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 7.25 in
• Cavity Insulation Nominal R-value: 30.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 15.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 3.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 2.4 - 4.13.3

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 7.25 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 7.25 in
• Cavity Insulation Nominal R-value: 30.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 20.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 4.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)

• 999 Years

Measure Cost

UnitsRangeAverage
\$/ft^2 Roof 2.8 - 4.73.8

Insulate with Loose Fill and Rigid Foam Board:

Before-Component After-Component Cost

Properties:

• Cavity Depth: 7.25 in
• Cavity Insulation Nominal R-value: h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: h-ft^2-R/Btu
• Continuous Insulation Thickness: in
• Framing Factor: 0.07
• Insulation Fills Cavity: False

• 999 Years

Properties:

• Cavity Depth: 7.25 in
• Cavity Insulation Nominal R-value: 30.0 h-ft^2-R/Btu
• Continuous Insulation Nominal R-Value: 25.0 h-ft^2-R/Btu
• Continuous Insulation Thickness: 5.0 in
• Framing Factor: 0.07
• Insulation Fills Cavity: True

Performance Standards:

• Exceeds IECC 2009 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)
• Exceeds IECC 2012 (1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 5A, 5B, 5C, 6A, 6B, 6C, 7, 8)