Technical Information / Codes and Standards

CodeFinder by State

Code FinderCodeFinder is designed to quickly narrow down and focus on the prescriptive requirements for metal building roof and wall insulation levels. In addition, it outlines effective dates, compliance status and code references which help determine the intent of the energy code for each state. New and more stringent energy codes are quickly being adopted which changes the way metal buildings are insulated and Thermal Design has the simple solutions for you. Be prepared and stay informed with CodeFinder (Registration/Login is required). Utah Code Alert shown below for demonstration.

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Utah Alert

Thermal Design Last Update: 09/24/2019

Technical Information / Codes & Standards / Code Finder



  • ASHRAE Journal (Feb. 2010)
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Code Name: Utah State Commercial Construction Code
Based Upon: 2018 IECC
Effective Date: 07/01/19
Compliance: Mandatory

Thermal Design provides this information as a courtesy and shall not be held responsible or liable for the information explained. Energy code updates, jurisdiction adoptions and enforcement may vary and Thermal Design recommends to check with all current applicable codes as it pertains to your specific project. If you have questions, would like additional information or notice a discrepancy please contact us.


Metal Building Code Alert

Utah Code Alert Download

The State of Utah has updated the Utah State Commercial Construction Energy Code with mandatory compliance as of July 1, 2019. The new energy code increases stringency requiring alternative installation and additional insulation levels for metal buildings roofs and walls. For decades, Thermal Design has been supplying insulation systems that achieve the high level of performance the State of Utah is implementing today.

Minimum Requirements

* Based upon 2018 IECC, Table C402.1.3 and Table C402.1.4  

Climate Zone   Roof Wall
6 U-factor* U-0.031 U-0.052
Installed R-Value R-32.3 R-19.2
Prescriptive Value R25+R11 LS R13+R13ci
5 U-factor* U-0.035 U-0.052
Installed R-Value R-28.6 R-19.2
Prescriptive Value R19+R11 LS R13+R13ci
3 U-factor* U-0.035 U-0.079
Installed R-Value R-28.6 R-12.6
Prescriptive Value R19+R11 LS R13+R6.5ci

Exposed Purlins

Roof insulation systems which leave the conductive purlins exposed to the interior DO NOT meet the assembly description for a Liner System (LS) listed within the energy code. (Compare in the chart below)

(LS) Liner System: a continuous membrane installed below the purlins and uninterrupted by framing members. Uncompressed, unfaced insulation rests on top of the membrane between the purlins (2015 IECC, Section C202).

“ci” Continuous Insulation

Fiberglass insulation compressed behind or in front of wall girts and/or fiberglass insulation installed uncompressed between wall girts should NOT be considered “continuous insulation” because it does not meet the assembly description or minimum thermal performance.

(ci) Continuous Insulation: insulation that is uncompressed and continuous across all structural members without thermal bridges other than fasteners and service openings. It is installed on the interior or exterior or is integral to any opaque surface of the building envelope. (ASHRAE Standard 90.1-2013 definition)

Simple Saver System® is the Solution

Simple Saver System meet and exceeds {title} building codes.The installed performance of the Simple Saver System® surpasses the minimum thermal envelope and air barrier requirements (ASTM E2178) in the 2018 IECC and for the State of Utah. Thermal Design has conducted hot box testing in accordance to ASTM C1363 on a variety of Simple Saver roof and wall assemblies that validates installed performance to demonstrate energy code compliance and envelope assembly modeling. 
Additional high R-value Simple Saver assemblies are available upon request, including additional options for thru-fastened roof and standing seam roofs without thermal spacer block.

Simple Saver System Performance

Roof Type Standing Seam with Thermal Block
R-Value R30 (R19+R11) R36 (R25+R11) R41 (R30+R11)
Thermal Block R-3 R-3 R-3
U-Factor U-0.035 U-0.031 U-0.029
Installed R-value R-28.6 R-32.3 R-34.5
Note: No ci Continuous Insulation or Rigid Board
R-value R-25* R-30* R-25 + R-10 R-30 + R-16
U-factor U-0.059 U-0.052 U-0.047 U-0.039
R-16.9 R-19.2 R-21.3 R-25.6
Wall performance values from ASHRAE Standard 90.1-2016, Table A3.2.3 Assembly U-factors for Metal Building Walls.
*Quik-Stop foam thermal break (3/16") applied to girt flange is required.

Single Layer Wall System shown above.

To learn more about the changes with metal building U-factors and more detailed information on which metal building insulation assemblies that meet code intent call 800.255.0776 or email us.

Benefits of the Simple Saver System
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