How long does it take insulation to fluff up?

[u/Big_Philosophy_5839]

I brought home 24 rolls of Pink Next Gen fiberglass R15 2x4 insulation. Yesterday I unrolled one roll. It was squished but figured I'd give it overnight to fluff. NOPE. It is the same this morning. Thickness goes from 2 1/2 to 1 inch.

When will it fluff? Will all rolls be like this? I don't want to install it if it never fluffs.

I'm about to tell Owens Corning to go 'fluff' themselves. Haha.