Measure Guideline: Incorporating Thick Layers of Exterior Rigid Insulation on Walls

Timothy Merrigan, P. Baker, J. Lstiburek, Stacey Rothgeb (NREL Technical Monitor)

Research output: NRELSubcontract Report


This measure guideline, written by the U.S. Department of Energy's Building America team Building Science Corporation, provides information about the design and construction of wall assemblies that use layers of rigid exterior insulation thicker than 1-1/2 in. and that require a secondary cladding attachment location exterior to the insulation. The guideline is separated into several distinct sections that cover: (1) fundamental building science principles relating to the use of exterior insulation on wall assemblies; (2) design principles for tailoring this use to the specific project goals and requirements; and (3) construction detailing to increase understanding about implementing the various design elements.
Original languageAmerican English
Number of pages115
StatePublished - 2015

Bibliographical note

Work performed by Building Science Corporation, Westford, Massachusetts

NREL Publication Number

  • NREL/SR-5500-63337

Other Report Number

  • DOE/GO-102015-4569


  • Building America
  • Building Science Corporation (BSC)
  • cladding attachment
  • R-value
  • residential
  • residential buildings
  • rigid insulation
  • thermal bridging
  • walls
  • window details


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