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Deal.ai › ROCKWOOL › Stone Wool Insulation
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Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525

Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525

Best price now

$83.98at The Home DepotVerified

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Our take on the Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525

Rockwool Safe 'n' Sound is unfaced stone wool batt insulation sold in 3-inch thickness for interior walls, ceilings and floors. It is non-combustible, tolerates heat up to 2150°F, resists moisture and does not feed mold, and its dense stone wool absorbs sound better than fiberglass of the same thickness. The best new price is $83.98 at The Home Depot as of November 7, 2026, with two stores pricing it new.

Best forInterior walls where sound transfer mattersHomeowners finishing a basement or bedroomAround plumbing, doors and electrical penetrationsBuyers who want a non-combustible, moisture-tolerant batt
Pros
  • Dense stone wool damps sound between rooms
  • Non-combustible and rated to 2150°F
  • Resists moisture and does not promote mold or mildew
  • Friction fit holds in stud bays without fasteners
  • Cuts with a serrated knife
Cons
  • 3-inch thickness suits interior partitions, not standard 2x4 exterior walls needing full cavity fill
  • Unfaced batts need a separate vapor barrier in many assemblies
  • Stone wool is heavier and itchier to handle than fiberglass
  • Price per square foot runs above basic fiberglass batts

Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525 prices at every store

  • The Home DepotNew

    In stock

    $83.98Free shippingVerified
    Visit The Home Depot
  • Lowe'sNew

    In stock

    $83.98Free shippingVerified
    Visit Lowe's

Store links may earn us a commission. Some prices via Klarna.

Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525 price history

Lowest price we've seen: $83.98 on Nov 7 at The Home Depot. Tracked across 2 stores since Nov 7.

What reviewers say

Owners who use Safe 'n' Sound for interior walls and ceilings report a clear drop in sound transfer between rooms. Most praise the density and friction fit; complaints center on weight, itch and cost compared with fiberglass.

What people mention
  • Sound dampeningPraisedOwners say interior walls and ceilings are noticeably quieter after installing it.
  • Friction fitPraisedBatts hold in stud bays without staples when cut to the right width.
  • HandlingCriticisedReviewers find stone wool heavier and itchier on skin than fiberglass.
  • MoisturePraisedUsers report it holds up in damp basements without mold or sagging.
  • CostMixedBuyers accept the price for sound control but note it runs above basic fiberglass.

Specifications

Width (")
15.25Source
Area of Use
Ceiling, FloorSource
Length (")
47.0Source
Product Type
Soundproofing insulation
Material Type
Insulation, Soundproofing insulation

Questions and answers

Is 3-inch Safe 'n' Sound thick enough for a 2x4 wall?
It fills a 2x4 cavity only partly, leaving an air gap. That is fine for sound control, but check your local code if you need full-cavity R-value.
How much area does one pack cover?
Listings vary between about 59.7 and 65 square feet per pack. Check the pack label before ordering to match your wall area.
Does it need a vapor barrier?
The batts are unfaced, so most wall and ceiling assemblies still need a separate vapor retarder on the warm side. Follow local code.
Can I use it around electrical boxes and plumbing?
Yes. It is non-combustible and commonly packed around plumbing, doors and electrical penetrations for sound and draft control.
Is it better than fiberglass for soundproofing?
Its higher density absorbs more sound than fiberglass of the same thickness, which is why it is popular for interior partitions.
When is the price lowest?
Prices at The Home Depot and the second store move with seasonal promotions. Compare both stores before buying a full project quantity.
Where is the Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525 cheapest?
At The Home Depot, for $83.98, as of our latest check.
Where can I buy the Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525?
2 stores we checked sell it, including The Home Depot, Lowe's.

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Compare the Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525

  • Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525 vs RXCB3523 R15 24x47 Bat Insulation
  • Rockwool COMFORTBATT R-23 Attic Wall Unfaced Stone Wool Batt Insulation 39.8-sq ft (15.25-in W x 47-in L) RXCB551525 vs Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525

Stores we've priced the Rockwool SAFE 'n' SOUND Attic Wall Unfaced Stone Wool Batt Insulation 59.7-sq ft (15.25-in W x 47-in L) RXSS31525 at

  • Home Depot deals and prices
  • Lowe's deals and prices

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Material Composition
Stone wool, Mineral Wool
Thickness
3 in
Length
48"
Width
16 in
Area
65 sqft
Form Factor
Batt
Intended Use
Walls, Ceilings
Surface
Wood
Fire Resistance
Non-combustible
Mold Resistance
Does not promote the growth of mildew, fungi or mold
Water Resistance
Water resistant
Installation Method
Friction fit
Installation Tools
Serrated knife (for cutting)
Finish
Unfaced
Flammability Rating
Non-combustible
Moisture Resistance
Yes
Temperature Resistance
Up to 2150°F (1177°C)
Environment
Indoor
Ideal Locations
Around plumbing, Around doors, Around electrical