Assertion: insulation's r value | /r/HasProperty | 5.5 – 6.0 per inch
Facets:
Source sentences:
text: Closed cell is the more popular choice for attics and exterior walls as it helps to create a stronger, more airtight home, is resistant to mold growth and has the highest R-value (5.5 – 6.0 per inch, according to the CMHC).