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R- 30 Attic Unfaced Fiberglass Roll Insulation 31.25-sq ft ( 15-in W x 25-ft L ) Individual pack

Owens Corning R- 30 Attic Unfaced Fiberglass Roll Insulation 31.25-sq ft ( 15-in W x 25-ft L ) Individual pack

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What is the R -13, R-19 ?


An insulating material's resistance to conductive heat flow is measured or rated in terms of its thermal resistance or R-value -- the higher the R-value, the greater the insulating effectiveness. The R-value depends on the type of insulation, its thickness, and its density.

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Hi, the main difference is the thickness of the product - R-13 is 3.5" thick and R-19 is 6.25" thick. If you need additional information, please contact an Owens Corning representative at 1-800-GET-PINK. Thank you for your inquiry!

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