Assertion: insulation's effect | /r/HasProperty | insulating boards - per inch
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Source sentences:
text: Effects & Comments Fiberboard insulating boards - per inch 2.8 30 Questionable data, Some sources claim 2.64 Fiberboard 1/2" intermediate density, per inch 2.44 30 Questionable;  Divide this per inch numberby 2 to obtain the R-value for 1/2" medium density fiberboard = R 1.22 Fiberboard insulating sheathing, regular density, per inch 2.64 30 Questionable;  Divide this per inch number by 2 to obtain the R-value for 1/2" regular density fiberboard = R 1.32 Fiberboard insulating sheathing, 25/32" thick, regular density, per inch 2.64 30 Questionable;