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bobhol | Posted in Energy Efficiency and Durability on

My builder is going to use 5 inches of EPS rather than 4 inches of XPS on the exterior walls. His reasoning is the same insulation value for a little less money ….any pro’s or con’s either way?

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  1. GBA Editor
    Martin Holladay | | #1

    Pro: EPS is more environmentally friendly than XPS.
    Con: You need longer screws.

  2. bobhol | | #2

    Thanks Martin ...I just thought everyone used XPS as thats all I notice around here.

  3. GBA Editor
    Martin Holladay | | #3

    For more information, see this article from the GBA Encyclopedia: Rigid Foam Insulation.

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