Owens Corning R-19 Fiberglass Insulation vs Guardian Knauf R19 Unfaced Fiberglass Roll
Buy the Owens Corning if you want one roll that covers a whole 2x6 wall run and a choice of facings. Buy the Knauf if you want a lighter, less dusty roll and are fine buying a three-pack. Both are unfaced R-19 fiberglass at about R-3 per inch, so thermal performance is a wash. Owens Corning's PINK Next Gen line gets consistent praise from owners and contractors for cutting cleanly, recovering fast and shedding less, and its 4.7 rating across thousands of reviews backs that up. Knauf's Performance+ line is the one marketed as formaldehyde-free with low dust and low VOCs, but this listing is the standard UR05TAK roll, not that line.
- Choose the Owens Corning R-19 if you are insulating nominal 2x6 walls or attics and want a longer 39.2 ft roll, a 23 in width option, and Kraft or FSK facing choices.
- Choose the Knauf UR05TAK if you want a lighter 15 in unfaced roll that is easy to handle solo and you can use a three-pack.
Prices
- Owens Corning R-19 Fiberglass Insulation: $48.97 at Home Depot (last seen Nov 4)
- Guardian Knauf R19 Unfaced Fiberglass Roll: $160.57 at Walmart (last seen Nov 13)
- Difference: the Owens Corning R-19 Fiberglass Insulation is $111.60 cheaper than the Guardian Knauf R19 Unfaced Fiberglass Roll at the latest prices (Nov 4 and Nov 13)
