The walls in your home have 25mm of expanded polystyrene (R-value 3.96) and 25mm of rigid urethane foam (R-value 7.50). What is the R-value of your insulation?

Question

asked Dec 14, 2022 123k views

1 Answer

Cpx · Answer 1 · 2022-12-18T14:24:52+0000

Answer:

3.6 per inch

EPS insulation features an average r-value of 3.6 per inch.

In addition to providing energy efficiency, EPS without film facers has a perm rating of up to 5.0.

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