Assertion: foam's use | /r/HasProperty | cfc
Facets:
Source sentences:
text: Several variables affect the installed R-value of foam insulation, including the initial density of the foam, the blowing gas used (CFC, HCFC, CO2, air, or a number of other gases), how the foam insulation is handled (dents and chips adversely effect the R-value), the type of facing (if any) used, and the conditions in which the foam is installed.