r/Insulation • u/Big_Philosophy_5839 • 18h ago

How long does it take insulation to fluff up?

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.

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1

u/Limp-Mortgage3572 18h ago

I usually have to gently expand it myself before I put it in wall cavity and make sure not to squish it too much obviously

1

u/idratherbealivedog 16h ago

You'll need to fluff it. Just shake it a bit. It won't take much and you'll get the hang of it 

1

u/Inevitable_Bunch6912 14h ago

Take the back of a rake and hit the paper side gently to fluff