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Extrusion Matters: XPS vs. EPS
Extruded polystyrene (XPS) and expanded polystyrene (EPS) are both types of rigid foam plastic insulation; their different manufacturing processes produce wide-ranging performance attributes, especially in water absorption and R-value. This course discusses the negative impact of water absorption on R-value and structural integrity; explains why codes and standards are sometimes specific in requiring XPS in applications where prolonged exposure to water occurs; and concludes with a look at best specification practices for accurate bids.
Upon completion of this course, the Learner should be able to:
- Identify the physical differences between XPS and EPS rigid polystyrene insulation materials.
- Restate code and standard differences regarding the performance of XPS versus EPS.
- Discuss water absorption differences and the impact on the energy efficiency properties of EPS versus XPS.
- Describe best specification practices for rigid polystyrene insulation materials to produce accurate project bids.
Approximately 1 hour. Delivered online, at your own pace.
Presented by Tiffany Coppock, AIA, NCARB, CDT, LEED AP, ASTM, RCI, EDAC on behalf of Owens Corning. View the Privacy Policy .
Presenter Information
Name: Tiffany Coppock, AIA, NCARB, CDT, LEED AP, ASTM, RCI, EDAC
Title: Commercial Building Systems Specialist, Owens Corning
Background: Tiffany Coppock, AIA, NCARB, CDT, LEED® AP, ASTM, RCI, EDAC is Owens Corning’s Commercial Building Systems Specialist. She provides leadership and technical guidance in building science, testing, and documentation to design professionals and the Owens Corning team. Formerly, Tiffany was a Building Science Manager answering technical questions, reviewing drawings and specifications, and giving educational sessions on topics such as air barriers, waterproofing, vegetative roof assemblies, and insulation. She holds a BEnvD from Texas A&M University and MArch from the University of Colorado, and is a registered architect with a specialization in healthcare and historic preservation.
