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Owens Corning R-30 Kraft Faced Fiberglass Insulation is a blanket-style batt for attics, walls and ceilings, with a kraft paper facing that acts as a vapor retarder. R-30 suits 2x10 framing and is a common choice for attic floors and cathedral ceilings. It is GREENGUARD certified for low emissions. The best new price is $74.99 at James Trading Company as of November 7, 2026, with two stores listing it new.
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Lowest price we've seen: $52.00 on Nov 7 at Years Building Materials. Tracked across 4 stores since Nov 7.
Buyers rate it 4.7 out of 5 across 179 ratings. Owners report it installs cleanly in standard framing and holds its shape, with complaints mostly about itch and handling.
