Ratings & Reviews for ROCKWOOL Comfortbatt R- 30.0 Attic Wall Unfaced Stone wool Batt Insulation 30-sq ft ( 23.0-in W x 47.0-in L )

Good product bad customer service

Product is very good but be aware when it is shipped I guess it is an open box and sometimes it comes in wet. This product is junk if it gets wet it holds water really bad. But the lowes stores carry it but never seem to have it stocked up. And they will take forever to bring down product from the shelves.

It’s a good quality material

My second shipment of 50 bags of material was loose looks likes it’s been seating for to long it losses density

Quality is amazing.

I love this insulation and think it is exactly what I needed. I placed it in two layers perpendicular to each other in the attic. Since applying, I've honestly noticed the difference in my home. Both my upstairs rooms are the same temperature now before one was always 5 degree off. The house feels more comfortable and I've noticed it doesn't have a drastic change in temperature. Prior the outside temp would change and my home would immediately either get hot or cold quick, now it's gradual keep...

Cleaner and easier to manage than fiberglass

Much clear and easier to deal with than fiberglass

Don't waste your time with other insulation

Rockwool is amazing, its worth every penny. Easy to install, you can cut it with bread knife, just pop it into place and it stays. Only issue was I couldn't order the amount I needed online, I had to call the store to place a special order.

I love this stuff!

Renovating the attic, we are replacing the existing insulation (R6 at best due to how much old fluffy stuff has settled/compacted over the years). The rockwool bundles are compacted at the factory just enough to pass them through the attic pull down - they are not terribly heavy but a little awkward to carry on your own (I'm a small guy at 140#). On my attic pull down, the end of one of the springs caught the side of the package on the way up just enough to cause the bag to "pop" right there in ...

Should have done this years ago !

My 1986 built single level ranch home has always been cold in the winter and hot in the summer; and we live in San Diego. We finally decided to add some new insulation on top of our existing fiberglass R30 insulation that came with the house. My handyman and one helper installed the new Rockwool R30 in one day. We immediately noticed a difference !!! We set the thermostat to 69 degrees and the house is comfortable all day and night. The heater comes on very seldom and when it does come on it...

Attic insulation

Felt there were more rocky material and some crumbled

I used it for 2x10 maybe better with 2x 12

Good product