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Safe 'n' Sound 3 in. x 15-1/4 in. x 47 in. Soundproofing Stone Wool Insulation (1-Bag)

  • 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 2150°F 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.
  • Applications include: basement walls and ceilings, media rooms, home offices, laundry rooms, furnace rooms and bedrooms
  • 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
  • Bag covers 59.7 sq. ft.
  • Resistant to water, rot, mold, mildew and bacterial growth
  • 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.)
15.25 in


Bag Size
4 ft. x 3 in. x 15.25 in.
Batt/Roll Size
3.91 ft. x 3 in. x 15.25 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,Basement,Ceiling Insulation,Floor
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


Why is it listed here if I can't order it? Do I have to order a pallet? Frustrating.

Asked by gkman February 16, 2021

If you are having difficulty sourcing available product please call our CS line direct for distributor contacts close to you 1-855-876-3755 (Direct)

does it come loose fill to blow into a wall?

Asked by John February 10, 2021

Hi John...Rockwool do not manufacture a loose fill or blown in type. Its much too dense material....would block the blown in machine

I need to use this in a 24" X 48" wood frame for acoustic panels. Can I use one and cut the rest ...

Asked by Sam January 20, 2021

For acoustic panels please review our video https://www.youtube.com/watch?v=wa5l5LRwl3w and note its typically Comfortboard 80 used which is a 2 x 4 dimension... though you could use the batt product in 24" dimension as an option. Batts are available for either 16" or 24" oc dimensions

Is it ok to leave this uncovered in ceiling joists? I want to install in semi finished home gym/t...

Asked by dr January 15, 2021

Dear DR: NO -- particularly for a gym. Rockwool fibers are itchy and irritating, and definitely not something you want to inhale. We always wear professional dust masks when we install it, plus gloves and a Tyvek 'painter's suit' for larger jobs. You don't need to cover it with much, e.g. 1/2" drywall. Also note, however, that sound reduction is difficult and more than 'Safe 'n Sound' is required. For example, are any HVAC ducts shared with the rooms above? Air flow = sound flow. You could also significantly reduce sound by doubling-up the drywall on the ceiling. Install the first layer and seal all of the joints and perimeter carefully. Then install a second layer of drywall. Cover each new sheet with 2 full tubes of DAP 230 sealant. Then fasten the new sheet with a few long screws into the joists, pressed against the first layer. Again, seal all of the joints and perimeter to block air / sound leaks. Make sure the second layer panels do not contact the walls, and fill the gap between the wall and ceiling with DAP 230. Let the DAP 230 cure for 48 hours, then remove the screws. This will create a rubbery / resilient layer between the two layers of drywall ceiling, which will reduce sound transmission. I hope this is helpful. Mark

I have a common door separating my front house to the back house. Can I use this on the door and...

Asked by DY December 25, 2020

Not an application we have any system testing with for Rockwool products

Can blown in insulation be installed on top of rockwool safe ‘n’ sound between floors

Asked by Hey December 5, 2020

Yes you can install it and then install the lighter blown in over the top of the Rockwool batts

I have existing pink fiberglass insulation in my unfinished basement ceiling, with kraft paper fa...

Asked by Nocturnal November 27, 2020

You can add ROCKWOOL as an option if you have the cavity depth space to accommodate the thickness of the ROCKWOOL batt. If adding place the ROCKWOOL batt below as its denser oversized material and has a pressure fit. This will support the lighter material above

What is the R value on this product?

Asked by Philly November 22, 2020

Hi Philly, Safe 'n' Sound is specifically designed for interior acoustic applications (interior walls, partition/party walls, ceiling and floor) but will still give you a R-value ranging approximately from 3.8 to 4 per inch. However, we do not recommend using Safe 'n' Sound in exterior wall applications. For optimal thermal performance in your exterior walls, we recommend our R-rated Comfortbatt products. Please contact our Technical Support Team for more details. ROCKWOOL Technical Support Team contactus@rockwool.com 877-823-9790

Can this be used inside a steel oil burner cover to reduce the noise? Could it be glued inside, ...

Asked by Kaz November 15, 2020

Not something we have system testing on for this residential wall / floor product, also we do not recommend adhesive as it may only hold on a temporary basis

Does it help keep the room warm

Asked by Candy November 11, 2020

YES! Very Much ... Absolutely ...YES!!

Safe 'n' Sound 3 in. x 15-1/4 in. x 47 in. Soundproofing Stone Wool Insulation (1-Bag) - page 2

Customer Reviews

  • 4.7
    out of 730 reviews
  • 95% recommend this product
Filter by:
Showing 1-10 of 730 reviews
I installed 20 bags in complete remodel in Florida. The product we easy to cut, install and shape...
I installed 20 bags in complete remodel in Florida. The product we easy to cut, install and shape as needed. Since this is my "forever" home (right now) I soundproofed every wall in a 3000 sq. ft. single story home. I also foamed the roof so I need to be careful to only use the product in a couple of bedrooms to insure proper conditioned attic space. Then applied 5/8" fire proof drywall throughout the house. Let me say - you don't hear a thing from one room to the next.
by Robinator
Found the foam as per spec
Foam was steady, great shape, correct measurement and work well. I recommend for acoustic treatment
by Mortoza
Used on the "shared" wall of a twin home, it has helped cut down on the noise from next door!
Used on the "shared" wall of a twin home, it has helped cut down on the noise from next door!
by SH823
5 people found this helpful
I used this in the floor joists between my kids' playroom and my home office. I'm fairly certain ...
I used this in the floor joists between my kids' playroom and my home office. I'm fairly certain it does nothing to absorb the sound because I can hear my kids talking (and worse, stomping) above. This was used in conjunction with resilient channels and 1/2" drywall.
by rohneas
Response from Rockwool TeamJun 20, 2019
The product will provide sound dampening in this application. Note that sound will travel through any gap in a wall or floor/ceiling system. If you have hardwood floors, the purpose of the RC Channel when correctly installed will decouple the drywall from the wood framing which will assist with the impact sound you advise. rockwool
5 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
Good insulation will recoment
Good insulation will recoment
by Manny
This product does not do even close to its 50% rating. You can still hear everything. This is goo...
This product does not do even close to its 50% rating. You can still hear everything. This is good for far away misc. noises.. but conversations, radio playing, tv, and other loud noises - forget about it.. it goes right through. I must have bought $3000 of this product to do (2) apartments.. in the walls, double layered in the floor and ceilings.. it did minimal sound protection from the neighbors next door. It’s a way overpriced product for about 30% of what it claims to do. If you want to soundproof a wall.. stagger the wood party studs, add resilient channels with a rubber backing, use quietrock 530 series ( yes.. the expensive one) laminate it with 5/8” Sheetrock with greenglue compound in between. This is a severely overpriced product!!
by cedo
Response from Rockwool TeamJun 26, 2019
Hello 'cedo' - Please check out this guide that talks about typical assemblies and the sound transmission class when installed correctly as pictured https://cdn01.rockwool.com/siteassets/o2-rockwool/documentation/brochures/residential/SAFEnSOUND-Soundproofing-Solutions-Brochure.pdf rockwool
19 people found this helpful
Works GREAT, totally keeps sound out, of course if you knock on the wall you're going to hear tha...
Works GREAT, totally keeps sound out, of course if you knock on the wall you're going to hear that. I used it in the bathroom to keep embarrassing "bathroom" sounds from escaping thru to a common area. It's easier to install than fiberglass because its stiffer and easier to cut and shape by using just a bread knife or maybe even a serrated steak knife. It is a lot more itchy than fiberglass so use long a sleeve shirt, gloves and also a mask as there are rock particles that come off of it while installing and cutting. I don't like how its described on the website, it should say that there are 12 bats of 3"x15 1/4 x 47" or a total of 564" or 47 feet of length. It seems really expensive when you just say that its 3x15 1/4 x 47" for around $50 (seems like its for only one piece) which almost deterred my from purchasing it.
by plumberscrack
21 people found this helpful
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
Showing 1-10 of 730 reviews