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?

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Dunstan asked Mar 26, 2022

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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?

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Dunstan asked Mar 26, 2022

by Dunstan

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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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hope this helps

PotatoEngineer answered Apr 1, 2022

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