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Safe 'n' Sound 3 in. x 16-1/4 in. x 48 in. Soundproofing Stone Wool Insulation (12-Pack)

  • Reduces Sound Tranmissions
  • Fire Resistant & Water Repellent
  • Ease of Installation - Cuts Easily & Friction Fits
  • See More Details

Frequently Bought Together


Product Overview

Installing Roxul Safe ’n’ Sound insulation inside interior walls, above ceilings is a great way to improve the fire resistance of your home and reduce unwanted noise between rooms. Made from non-combustible stone wool, Roxul Safe ’n’ Sound can withstand intense temperatures of up to 2150F and delays the spread of fire for added safety. Designed with a unique, non-directional high density fiber structure, Roxul Safe ’n’ Sound provides a better fit against the studs and an excellent barrier to sound. It is also easy to handle and cut with serrated knife for simple installation around doors, wiring and plumbing. And the combination of its natural composition of basalt rock with recycled content along with its GreenGuard Gold indoor air quality certification, Roxul Safe ’n’ Sound offers you an environmentally friendly choice to help soundproof your next home renovation project.
  • Roxul is non-combustible and delays the spread of fire between rooms for added safety
  • Easy to cut with a serrated knife to fit around doors, electrical and plumbing
  • Resistant to water, rot, mold, mildew and bacterial growth
  • Bag covers 64.0 sq. ft.
  • Completely fills wall cavity to eliminate gaps and voids
  • Made from natural rock
  • GreenGuard gold certified for indoor air quality
  • Click here to learn more about Eco Options and Energy Efficiency
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation calculator button

Info & Guides

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Coverage Area (sq. ft.)
Product Length (ft.)
3.91 ft
Product Thickness (in.)
3 in
Product Width (in.)
16.25 in


Bag Size
48 ft. x 16 in. x 24 in.
Batt/Roll Size
3.91 ft. x 3 in. x 16.25 in.
Compatible Install Surface
Existing Drywall
Coverage Area per Bag (sq. ft.)
Faced or Unfaced
Insulation Features
Friction Fit,Soundproofing Insulation
Insulation Location
2x4 Wall,Ceiling Insulation
Insulation Type
Mineral Wool Insulation
Number of Bags
Pieces Per Bag
Pieces per Pallet
Product Weight (lb.)
Roll or Batt

Warranty / Certifications

Warranty Information

Questions & Answers


I need just one bag. Can I buy it that way?

Asked by Handyman21 April 22, 2021

this item is only sold by the pallet of 12


Asked by Blackie April 3, 2021

You are asking for how many bags of product cover a 46’x27’ area. If that is a solid area, you will need to cover 1,242 square feet. There is 59.7 square feet per bag. If the math is correct, you will need 21 bags.

what is the r value rating of this product ?

Asked by Richard December 18, 2020

R3.9 per inch of thickness.

What is the NRC (Noise Reduction Coefficient) for this product?

Asked by JT October 6, 2020

The Acoustic performance is stated on the Technical Data Sheet. NRC at 3" is 1.05. Click on this link to open data sheet https://www.rockwool.com/siteassets/o2-rockwool/documentation/technical-data-sheets/residential/safensound-fire-and-soundproofing-insulation-techdata.pdf

What is the R-Value

Asked by Rain982 October 4, 2020

ROCKWOOL do not publish or brand the R Value as interior partitions and between floors have no R value requirement for code. How ever we do test the product and it will provide an R3.9 per inch. 3" would be R11.7

I have a 19’ wide x 8’ high wall with 2x4 stud each 16” How many bag I would need? Thanks

Asked by Martin September 30, 2020

19 x 8 = 152sf Each bag covers approx. 60sf Approx 3 bags

Can I use this in a vaulted ceiling. I worried about condensation building up since it will be a ...

Asked by ME August 9, 2020

As Mark advised below in the community response its a vapor open product. COMFORTBATT is applicable product and will provide the highest R value per inch of thickness. Note you require a 2 x 8 or deeper cavity depth to accommodate the 7.25" R30 material

is it formaldehyde free?

Asked by angie July 17, 2020

ROCKWOOL products do contain trace amounts of phenol formaldehyde however, majority of it is cured off during the manufacturing process. Batt products are Green guard gold certified and ensures the product is acceptable for use in environments such as schools and healthcare facilities. For more information email us direct contactus@rockwool.com

Why in the world would anyone by the 12 pack when you’ve overcharged them around $20? Not a deal at all to buy in bulk

Asked by Dewey June 24, 2020

When we bought this, it was on a *significant* sale, like 50% off or more--I think Home Depot was clearing some out. Really lucky timing.

Do I need a vapor barrier if I use rockwool in a attic ceiling and walls? also how do you increase Rvalue in attic

Asked by johnc May 14, 2020

Its typically dictated by your local code requirement. You can increase the R Value by layering the product if you have the cavity depth to accommodate a thicker layer. For more details on your questions please contact us direct. contactus@rockwool.com

Safe 'n' Sound 3 in. x 16-1/4 in. x 48 in. Soundproofing Stone Wool Insulation (12-Pack) - page 2

Customer Reviews

  • 4.8
    out of 447 reviews
  • 97% recommend this product
Filter by:
Showing 1-10 of 447 reviews
Easy to cut and fit
This is an excellent insulation product. I was insulating my garage and the end walls where the rafters are located is angled. I was looking for a product that was rigid enough to stay in place by press fitting it in between the 2 X 4's. I decided to try the Comfortboard 80 and it worked very well, I found it very easy to cut and fit into tight spaces.
by Tiger318
Warm and snug
The quality is bang on. Layered this up on the foundation wall in the basement. And then mounted in place was strapping. Very satisfied with the ease of installation.
by David B
Versatile material
I have a century home that’s double brick. Horizontal wood strips were embedded into the brick, with vertical slats attached for holding the lathe and plaster. I gutted all aspects of the old vertical slats, sealed any cracks/holes in the masonry, and added new 2X3s as vertical slats... 16” apart. I then had to determine what to stuff in between. At first I contemplated ridged foam, but I hate cutting it.Then I thought about slicing safensound bats like slicing a loaf of bread, but that seemed impractical. Finally, I found this product for basement walls, and decided to give it a try. Comffortboard 80 Cuts easy. Tight fitting. Conserves space. Will last a lifetime.
by Creativeguy
Very easy to use lots of dust but doesn't linger and it's not bad for you. Expensive but this stu...
Very easy to use lots of dust but doesn't linger and it's not bad for you. Expensive but this stuff works used double layers cuts out most sound especially high-end Coupled with sealing air gaps,very effective .
by tjhandyman
3 people found this helpful
Easy to work with
I chose safe and sound to insulate our son’s room that we were building. He gets loud when he games online with his friends and we needed sound proofing that was inexpensive and easy to install. I love the product. Very easy to work with which was great because I’m a novice at home renovation.
by Chris
Great Purchase and Easy Install!
Wow! I purchased 30 bags of the ROCKWOOL Safe 'n' Sound and was able to install it all by myself. I calculated that many bags on Rockwool's bag calculator on their website! Very accurate.. This product was very easy to install. Cutting around outlets, wires, and pipes was like cutting bread. Before the drywall went up, I could already tell a difference. I put the Safe 'n' Sound around all my laundry room, bathrooms, bedrooms, and in the basement ceiling. Not only does it provide sound proofing, it has other benefits as well. Such as fire resistant and no mildew can grow on it. I am so glad my builder let me install this product on my own. Would I recommend this product? Yes, 100%.
by benzstang
Exactly the product we wanted and needed!
We are renovating a 110-year-old stone carriage house. Rockwool has been our salvation for many reasons: exceptional thermal efficiency, super sound blocking, and mice hate it! Easy to install. We wrapped our new enameled steel tub with Rockwool for added insulation; my love of hot baths appreciates the extra 30 minutes I can spend reading in my tub before bed! And best of all, it has a low carbon footprint. Everything to gain when we opted for Rockwool instead of the irritating pink fluff.
by Liz
This product saved our house!
We installed this in our basement ceiling 3 years ago. Our gas fireplace in the basement cought fire this weekend and the smoke and flames destroyed alot of it. The fire was so hot it had melted light fixtures and the fan off of the ceiling! We had double lined the ceiling with roxul when finishing the basement as our master bedroom is right over the gas fireplace and down stairs living room and we wanted maximum protection! Well unfortunately it was put to the test but it did exactly as it should! We had zero, that's right ZERO damage to the upstairs of our house above the fire! I can't say enough good things about this product! It saved our house and all who were in it! Thank you and I will never use any other insulation product in my home!
by Jon
Best insulation out there.
Great product. It is the best of the best. I wouldn't use anything but it.
by Ronald Rutter
Amazing Insulation for Home and Studio too
The first time I tried Roxul (now Rock Wool) was a few years ago to make some sound absorbing panels for my recording studio at home. They turned out better than professional panels at a fraction of the cost. The stone wool was easy to cut with a kitchen knife, and still holds it's shape perfectly after 5 years now. I liked it so much, I asked a contractor to use RockWool last spring when I was getting some work done in my home to help with insulating and sound proofing the walls and ceiling. I will soon be insulating my outdoor garage and I'm looking forward to using ComfortBatt for that project this summer. I probably sound like a commercial, but it does a terrific job and is worth every penny. I highly recommend it, you will not be disappointed.
by PIGG Radio
Showing 1-10 of 447 reviews