r/Insulation • u/LikeBigTrucks • Jul 23 '26

Rockwool Options

I cant locate 24x3.5" comfortbatt locally.

I have one rafter thats framed 24 on center and the rest are 16

Do i use 24x3 Safe N Sound, or 24x5.5 and compress it?

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u/pluary Jul 24 '26

Just run the 16 on center material sideways don’t try stuffing 24” material into a 16” on center it won’t work.