Assertion: cellulose | /r/HasAspect | lower r-value per inch
Facets:
value: compared to closed cell
type: OTHER
Source sentences:
text: Compared to closed cell, Polyurethane foam insulation (R=5.5 to 6.5 per inch), cellulose has a lower R-value per inch, but is much less expensive; foam has a higher cost per equivalent R-value.[citation needed]