Closed Cell: What does it mean to you?

XPS COMPARISON | NEW INDUSTRY STANDARDS | XPS: GREEN & CLEAN

Insulation that absorbs water loses R-Value. A foam plastic insulation that has a closed cell structure absorbs a minimum amount of water thus retaining R-Value.

Examined under a microscope, XPS can be seen to have very well defined, uniform cells with continuous walls. That combination of characteristics results in a very low rate of water absorption compared to other types of foam plastic insulation.

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