Rockwool Mineral Wool Insulation
Rockwool stone wool insulation is non-combustible, water-repellent and dense enough to absorb sound. Shop Comfortbatt R-30 and R-38 for attics and ceilings and Safe’n’Sound for quieter interior walls, or have our licensed crew install it.
Showing all 3 results
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Rockwool Comfortbatt R-30 Unfaced Stone Wool Batt Insulation
$78.50 / Bag -
Rockwool Comfortbatt R-38 Stone Wool Batt Insulation
$92.80 / Bag -
Rockwool Safe’n’Sound 3-Inch Stone Wool Soundproofing Insulation
$69.50 / Bag
Why Choose Rockwool Mineral Wool?
- Fire resistance: non-combustible under ASTM E136, with a flame spread index of 0 (ASTM E84). A strong choice for wildfire-prone Malibu, Topanga, the Palisades and foothill homes.
- Moisture: water-repellent, and it doesn't rot or promote mold.
- Sound: dense stone wool absorbs airborne noise.
- Fit: semi-rigid batts friction-fit and don't sag.
Which Rockwool Product?
- Comfortbatt R-38: attic floors.
- Comfortbatt R-30: about 7¼ inches thick, for vaulted ceilings and tight attics.
- Safe'n'Sound: interior walls and floors, for noise control.
Rockwool vs Fiberglass
Stone wool costs more per square foot, but it adds fire and sound performance fiberglass can't match. For a standard attic on a budget, R-38 fiberglass is the value choice.
Rockwool Mineral Wool Insulation FAQ
- Is Rockwool worth the extra cost?
- Where fire resistance, sound control or limited cavity depth matter, yes. For a standard attic on a budget, fiberglass is the better value.
- Does Rockwool itch like fiberglass?
- Stone wool can still irritate skin; wear gloves, long sleeves and a dust mask when installing.