Measure Guideline: Transitioning from Three-Coat Stucco to One-Coat Stucco with EPS

Research output: NRELSubcontract Report

Abstract

This Measure Guideline has been developed to help builders transition from using a traditional three-coat stucco wall-cladding system to a one-coat stucco wall-cladding system with expanded polystyrene (EPS) insulated sheathing. The three-coat system uses a base layer, a fill layer, and a finish layer. The one-coat system maintains the look of a traditional stucco system but uses only a baselayer and a finish coat over EPS insulation that achieves higher levels of energy efficiency. Potential risks associated with the installation of a one-coat stucco system are addressed in terms of design, installation, and warranty concerns such as cracking and delamination, along with mitigation strategies to reduce these risks.
Original languageAmerican English
Number of pages52
StatePublished - 2012

Bibliographical note

Work performed by IBACOS, Inc., Pittsburgh, Pennsylvania

NREL Publication Number

  • NREL/SR-5500-53852

Other Report Number

  • DOE/GO-102012-3505

Keywords

  • EPS
  • one-coat stucco
  • stucco installation

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