Assertion: insulation's r value | /r/CapableOf | vary with change
Facets:
value: more significantly
type: DEGREE
value: in density
type: OTHER
Source sentences:
text: However, the R-value of fiberglass insulation varies more significantly with changes in density and, to achieve these high R-values, the insulation must be blown to densities of at least 1.8 lbs/ft3.