Customer Reviews for ROCKWOOL R-23 Comfortbatt 5-1/2 in. x 15 in. x 47 in. Fire Resistant Stone Wool Insulation Batt (39.8 sqft) (12-Bags)

Just what I wanted. Fast and delivered on time.

A few bags were damaged and the amount i had to order was more then i wanted . The guys who delivered said the fork lift driver did the damage. We havent use the insultation yet but we will figure out what to do when we need too

Only use this type of insulation, superior from installation to efficiency.

Excellent insulation ! I would definitely buy again

We purchased both R-23 Comfortbatt 5-1/2 in. and R-15 Comfortbatt 3-1/2 in. for a new, two bathroom addition with crawlspace. Used for interior and exterior walls, and underneath joists. Product is hydrophobic, fire resistant, and works great for sound reduction. The panels were easy to measure and cut with a heavy serated knife. They're ridgid, stay in place and are perfect for stud walls. With drywall installed the sound reduction was really noticeable. Each 11'x12' bathroom will only need one 48" baseboard heater. The added costs for this insulation (over fiberglass) are VERY well worth it...

This stuff is no joke. Fills up 2/6 cavity perfectly. Easy to work with and great r value.

Haven't had it for a year. So I cannot give it an excellent rating yet. The material is flaky like biscuits, so handle it with care. You can cut it to the correct size you need, but when installing...the material flakes off and gets all over you (I don't know if other people get itchy but I did). Here's tip wear a mask when installing, just to be safe. Do NOT compress (or squish) the Rockwool, you want it fully expanded. Speaking of expanded, cut the plastic that contains it so that it is fully expanded before you try to install it. I don't know if I'll be allowed to update this review in the future, but if my due diligence is correct: Rockwool is water resistant, fire retardant and overall a good insulator. So I should not have to go back up in my attic to deal with insulation for the remainder of my days (I'm 60 years old). I Hope this review helps.

Enjoy using this product

Packaged good. Ease of installation very easy. Used an old wood hand saw to cut very quickly and straight. Mostly consistent quality. Very noticible difference of outside and between room noise reduction. No vapor barier. Used simple plastic sheeting on the inside of outer walls. Would and have recommended. Found Home Depot to be best price but had to be delivered ($79 chg no mater quanity) to our place in Connecticut and hauled to Maine by us as delivery did not seem to be available there or available in or to stores.

The ordering process was very easy with the lady that helped me in the store and waiting time for delivery was minimal. The delivery guy was superb I would hope he does all your deliveries!

This is a great product. Easy to use! We used it to insulate our garage! Worth every penny!

Rating provided by a verified purchaser

The “Real” Sticky Icky

Worked well to cover voids left by foam insulation.

I had 2 spray foam contractors not come through putting me way behind schedule. This was the next best thing. I would highly recommend. Not itchy easy to install.