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Course Description: AEC Daily: Extrusion Matters: XPS vs. EPS
ONGOING - FREE - 1 HOUR
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.
ONGOING - FREE - 1 HOUR
Learning Objectives
Identify the physical differences between XPS and EPS rigid polystyrene insulation materials and how the differences relate to R-value and thermal comfort.
Restate how code and standard requirements seek to protect structural integrity by recognizing the differences in XPS and EPS performance when exposed to water.
Discuss how water absorption differs between EPS and XPS and its impact on their energy efficiency properties.
Describe best specification practices for rigid polystyrene insulation materials to produce accurate project bids.