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Washington State Building Energy Code Update

Posted By Administration, Tuesday, August 18, 2020
Updated: Tuesday, August 18, 2020

PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.

The applicable building energy code that determines the minimum insulation requirements for commercial roofs with insulation entirely above the deck in Washington is the Washington State Energy Code, Third Edition. The minimum requirement for insulation installed entirely above the roof deck is R-38 for all climate zones. This code is effective July 1, 2019.

Sample roof assembly diagrams and additional information can be found in PIMA’s Washington code fact sheet.


Tags:  building codes  building envelope  Efficiency  energy codes 

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Virginia State Building Energy Code Update

Posted By Administration, Monday, August 17, 2020
Updated: Monday, August 17, 2020

PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.

The 2015 Virginia Energy determines the energy-efficiency requirements for commercial building roofs. The minimum requirement for insulation installed entirely above the roof deck is R-30 for the state. This code is effective September 4, 2018.

Sample roof assembly diagrams and additional information can be found in PIMA’s Virginia code fact sheet.

Tags:  building codes  building envelope  energy codes  energy efficiency 

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North Carolina State Building Energy Code Update

Posted By Administration, Friday, August 14, 2020
Updated: Friday, August 14, 2020

PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.

The 2018 North Carolina State Building Code: Energy Conservation Code determines the energy-efficiency requirements for commercial building roofs in new construction. The minimum requirement for insulation installed entirely above the roof deck is R-30 for all climate zones. This code is effective January 1, 2019.

Sample roof assembly diagrams and additional information can be found in PIMA’s North Carolina code fact sheet.

Tags:  building codes  building envelope  buildings  energy codes 

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New Jersey State Building Energy Code Update

Posted By Administration, Tuesday, August 11, 2020
Updated: Tuesday, August 11, 2020

PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.

The applicable building energy code that determines the minimum insulation requirements for commercial roofs with insulation entirely above the deck in New Jersey is the Uniform Construction Code – Energy Subcode. The minimum requirement for insulation installed entirely above the roof deck is R-30 for all climate zones. Additionally, the State’s Rehabilitation Subcode requires roof replacements where the roof decking/sheathing is exposed to comply with the Energy Subcode minimum requirements. This code is effective September 3, 2019.

Sample roof assembly diagrams and additional information can be found in PIMA’s New Jersey energy code fact sheet.

Tags:  building codes  building envelope  buildings  Efficiency  energy codes 

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Nevada State Building Energy Code Update

Posted By Administration, Monday, August 10, 2020
Updated: Monday, August 10, 2020

PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.

The applicable building energy code that determines the minimum insulation requirements for commercial roofs with insulation entirely above the deck in Nevada is the International Energy Conservation Code (based on the 2018 International Energy Conservation Code with state-specific amendments for Northern Nevada and Southern Nevada).

The minimum requirement for insulation installed entirely above the roof deck is R-25 for climate zone 3, R-30 for climate zone 5. This code is effective June 26, 2018.

Sample roof assembly diagrams and additional information can be found in PIMA’s Nevada energy code fact sheet.

Tags:  building codes  building envelope  buildings  Efficiency  energy codes  energy efficiency 

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Alabama State Building Energy Code Update

Posted By Administration, Tuesday, August 4, 2020
Updated: Monday, August 3, 2020

PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.

The applicable building energy code that determines the minimum insulation requirements for commercial roofs with insulation entirely above the deck in Alabama is the 2015 Alabama Commercial Energy Code. The minimum requirement for insulation installed entirely above the roof deck is R-25 for all climate zones. This code is effective July 1, 2016.

Sample roof assembly diagrams and additional information can be found in PIMA’s Alabama energy code fact sheet.

Tags:  building codes  building envelope  Efficiency  energy codes 

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Wisconsin State Building Energy Code Update

Posted By Administration, Thursday, July 30, 2020
Updated: Thursday, July 30, 2020

PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.


The applicable building energy code that determines the minimum insulation requirements for commercial roofs with insulation entirely above the deck in Wisconsin in the 2015 Wisconsin Commercial Building Code. The minimum requirement for insulation installed entirely above the roof deck is R-20 for climate zone 6, and R-25 for climate zone 7. Note that the current model code requirements for insulation entirely above the roof deck are 40-50% more stringent (R-30 for CZ6; R-35 for CZ7) than Wisconsin’s minimum requirements.
This code is effective May 1, 2018.

Sample roof assembly diagrams and additional information can be found in PIMA’s Wisconsin energy code fact sheet.

Tags:  building codes  buildings  energy codes  energy efficiency 

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Utah State Building Energy Code Update

Posted By Administration, Wednesday, July 8, 2020
Updated: Wednesday, July 8, 2020
PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.

The applicable building energy code that determines the minimum insulation requirements for commercial roofs with insulation entirely above the deck in Utah is the Commercial Energy Conservation Code 2018 of Utah (based on the 2018 International Energy Conservation Code with state-specific amendments). The minimum requirement for insulation installed entirely above the roof deck is R-25 for climate zone 3, and R-30 for climate zones 5 and 6. This code is effective July 1, 2019.

Sample roof assembly diagrams and additional information can be found in PIMA’s Utah energy code fact sheet.

Tags:  building codes  building envelope  buildings  energy codes  energy efficiency 

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Tennessee State Building Energy Code Update

Posted By Administration, Thursday, July 2, 2020
Updated: Thursday, July 2, 2020

PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.

The applicable building energy code that determines the minimum insulation requirements for commercial roofs with insulation entirely above the deck in Tennessee is the 2012 International Energy Conservation Code with exceptions for specific building types noted here.

The minimum requirement for insulation installed entirely above the roof deck is R-20 for climate zone 3, and R-25 for climate zone 4. This code is effective August 4, 2016. Note that the current model code requirements for insulation entirely above the roof deck are 20-25 percent more stringent (R-25 for CZ3; R-30 for CZ4) than Tennessee’s minimum requirements. Building owners should consider exceeding the state’s minimum requirements when installing a new or replacement roof system in order to improve energy efficiency and reduce operating costs.

Sample roof assembly diagrams and additional information can be found in PIMA’s Tennessee energy code fact sheet.


Tags:  building codes  building envelope  buildings  Efficiency  energy codes  energy efficiency 

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South Carolina State Building Energy Code Update

Posted By Administration, Wednesday, July 1, 2020
Updated: Wednesday, July 1, 2020

PIMA’s State Energy Code Fact Sheets provide state-by-state details about the minimum insulation requirements for low-slope commercial roofing in both new and existing buildings. Each fact sheet includes state-specific insulation requirements, code-compliant assembly examples, and links to helpful resources. PIMA monitors state codes regularly to provide the most up to date information possible.

The applicable building energy code that determines the minimum insulation requirements for commercial roofs with insulation entirely above the deck in South Carolina is the 2009 South Carolina Energy Standard (based on the 2009 International Energy Conservation Code with state specific amendments and ASHRAE 90.1-2007). The minimum requirement for insulation installed entirely above the roof deck is R-20 for the entire state. Note that the current model code requirements for insulation entirely above the roof deck are 25 percent more stringent (R-25 for CZ3) than Sputh Carolina minimum requirements This code is effective January 1, 2013.

Sample roof assembly diagrams and additional information can be found in PIMA’s South Carolina energy code face sheet.

Tags:  building codes  buildings  Efficiency  energy codes  energy efficiency  resiliency 

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