Rockwool stone wool insulation package in foreground with construction worker installing insulation batt on home's exterior in background
Stone wool’s sound-absorbing and hearth-resistant properties make for productive insulation. (ROCKWOOL)

In this exclusive Today’s House owner Podcast, we’re speaking all about stone wool insulation with Dan Edelman, Rockwool’s Countrywide Business enterprise Progress Manager.

Stone wool insulation is fireplace-resistant and non-combustible, providing your family members extra time to properly escape a household fireplace. (ROCKWOOL)

What is ROCKWOOL insulation?

Dan: ROCKWOOL insulation is a rock-primarily based mineral fiber insulation comprised of Basalt rock and Recycled Slag. Basalt is a volcanic rock (abundant in the earth), and slag is a by-product or service of the metal and copper field. The minerals are melted and spun into fibers.

ROCKWOOL goods include among 16% or 40% pre-shopper recycled material dependent on the ROCKWOOL manufacturing facility area.

The amount of money of recycled content material is optimized to offer the ideal thermal, acoustic, and fire safety attributes from ROCKWOOL items, even though however maximizing the recycled material.


Rockwool factory in Byhalia, Mississippi
Rockwool’s manufacturing facility in Byhalia, Skip., was the company’s initial manufacturing operation in the United States. (3 Echoes Written content Studio)

Dan: ROCKWOOL organization began in 1937 in Copenhagen, Denmark, and the organization expanded to the North American industry in 1988.

So, our products is rather new to North The usa, but historically it’s been about for fairly some time now. We just opened up a new sophisticated manufacturing unit in Ranson, West Virginia. 

All of our factories are zero squander-to-landfill, and due to the fact stone wool insulation is hydrophobic, we use recycled rainwater to reduce it. Even our factories that are wind- and water-driven are self-generating.

You can find out additional about how our sustainable factories operate on ROCKWOOL’s Sustainability webpage.

Benefits of Stone Wool Insulation

Not only is Rockwool insulation extremely fire-resistant, it also functions to incorporate hearth and prevent its unfold. (Rockwool)

Dan: ROCKWOOL stone wool insulation is normally hearth-resistant due to the fact it is produced from rock. We really don’t have to insert any hearth retardants or chemical substances that improve flammability, so it is under no circumstances heading to carry a flame and has zero smoke growth.

One more gain is mould resistance. ROCKWOOL stone wool insulation actually repels h2o. There will generally be humidity in the air, specially when you are chatting about crawlspaces and attics.

Staying in a position to repel that humidity away and permanently becoming a mould and mildew-resistant merchandise, it is heading to support with the longevity of your wall assembly as well.

Attic Insulation

An interior view of a house attic under construction with stone wool insulation
An attic is 1 of the most cost-powerful parts to incorporate insulation. (ROCKWOOL)

Dan: ROCKWOOL insulation batts come in 16-inch on middle or 24-inch on center by 47 or 48 inches extensive, which is the perfect measurement for insulating attics. They in shape beautifully among the studs, so you get that whole cavity insulation.

Step a single when setting up attic insulation is to inspect the latest insulation. Make confident there’s no moisture, mould mildew, rodent droppings or rodents living there. Rodents don’t generally treatment for ROCKWOOL insulation. 

Immediately after inspection, simply lay the batts down perpendicular to the joists, especially if the existing insulation is only to the joists.

If the existing insulation is below the joists, you’ll want to fill up to the joist line so you get extra steady insulation.

ROCKWOOL insulation ordinarily has a 4.2 to 4.3 for each inch R-worth, so you actually really do not want rather as a lot to strike the bigger R-benefit. However, we have goods with a bigger R-value primarily for attics.

Rockwool Stone Wool Insulation Safe n Sound
Rockwool Safe’n’Sound is designed exclusively for audio dampening to help prevent sounds from traveling. (3 Echoes Information Studio)

What About Sound Insulation?

Dan: The very best detail for seem insulation is density and mass, both equally of which ROCKWOOL has. 

The other component to audio insulation is friction fit, how tight it matches in that wall cavity. If you have one location that you just cannot insulate appropriately, all the seem is likely as a result of that a single part and you’re minimizing that audio insulation.

For additional information on ROCKWOOL stone wool insulation, go to and examine out our All About Insulation webpage.

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