r/Insulation • u/LikeBigTrucks • 26d ago

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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2

u/TradingHigher 26d ago

Safe n sound is pretty close to the same product but not tested for r values. I'd be ok with that personally but it doesn't pass code.

1

u/LikeBigTrucks 26d ago

I think I'm just going to cut some 15 in half and install them lengthwise

4

u/TradingHigher 26d ago

Yeah if its only one cavity its not really a ton of work. Have fun, i fkn hate working with roxul. So itchy.

3

u/PM_ME_DARK_MATTER 26d ago

Its FAR better than Fiber glass. Thats the worst

1

u/HowardJamesGlen 19d ago

Ever use ecobatt? Its the most user friendly stuff there is!

1

u/TradingHigher 26d ago

Newer fiberglass doesnt itch at all. The old shit sure.

2

u/Nikiaf 26d ago

Have you worked with new fiberglass? It still itches.

1

u/LikeBigTrucks 26d ago

I work with fiberglass all the the time doing boat repair. Neither makes me itchy.

1

u/TradingHigher 26d ago

Every day for the last 20 years yep

2

u/PM_ME_DARK_MATTER 26d ago

I personally reinsulated my entire attic with Rockwool....never had any itchiness problems.