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5. 2012 International Energy Conservation Code

Siding Insulation Is 2012 International Energy Conservation Code Compliant

The IECC serves as the major regulatory tool for energy-efficient construction. Laminated insulated vinyl siding is included in the 2012 International Energy Conservation Code among the materials that can be used as continuous insulation outside of the building to provide the required total wall R-value for buildings in the coldest climate zones. Generally speaking, builders and remodeling contractors are able to use all forms of Fullback^®V siding insulation to meet the R-value/U-factor requirements of the IECC. Learn more about siding insulation or request a siding quote online.

Following are the sections of the 2012 International Energy Conservation Code that apply when laminated insulated vinyl siding is used as an option for compliance:

• Per Section 402 of the 2009 IECC, Building Thermal Envelope, the rated R-value of insulated siding can be used to calculate a whole wall U-factor when insulated siding is applied.¹
  
  
• When properly installed, insulated siding can meet the definition of “continuous insulation” in American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE) 90.1, which is referenced in the 2009 IECC.²
  
  
• Under the 2012 IECC, the R-value of insulated siding may be used to satisfy the insulation requirements of Table 402.1.1 when insulated siding is used as continuous insulation.³

"First value is cavity insulation, second is continuous insulation or insulated siding, so "13+5" means R-13 cavity insulation plus R-5 continuous insulation or insulated siding. If structural sheathing covers 40 percent or less of the exterior, continuous insulation R-value shall be permitted to be reduced by no more than R-3 in the locations where structural sheathing is used- to maintain a consistent total sheathing thickness." -Footnote H of the Energy Code

 
¹ International Code Council, 2009 International Energy Conservation Code, Section 402
² American Society of Heating, Refrigerating and Air-Conditioning Engineers, ASHRAE 90.1-2007 Energy Standard for Buildings Except Low-Rise Residential Buildings.
³ International Code Council, 2012 International Energy Conservation Code (to be published Spring 2011), Section 402