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

In this special Today’s Home-owner Podcast, we’re talking all about stone wool insulation with Dan Edelman, Rockwool’s Countrywide Business Development Supervisor.

Stone wool insulation is hearth-resistant and non-combustible, providing your family additional time to safely escape a dwelling hearth. (ROCKWOOL)

What is ROCKWOOL insulation?

Dan: ROCKWOOL insulation is a rock-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-products of the steel and copper field. The minerals are melted and spun into fibers.

ROCKWOOL products consist of between 16% or 40% pre-buyer recycled materials dependent on the ROCKWOOL manufacturing facility area.

The sum of recycled content material is optimized to provide the great thermal, acoustic, and hearth defense homes from ROCKWOOL items, when even now maximizing the recycled material.


Rockwool factory in Byhalia, Mississippi
Rockwool’s producing facility in Byhalia, Miss., was the company’s initial output procedure in the United States. (3 Echoes Information Studio)

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

So, our merchandise is fairly new to North The usa, but historically it is been about for quite some time now. We just opened up a new state-of-the-art manufacturing facility in Ranson, West Virginia. 

All of our factories are zero squander-to-landfill, and since stone wool insulation is hydrophobic, we use recycled rainwater to reduce it. Even our factories that are wind- and drinking water-powered are self-creating.

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

Advantages of Stone Wool Insulation

Not only is Rockwool insulation extremely hearth-resistant, it also will work to comprise fire and avoid its distribute. (Rockwool)

Dan: ROCKWOOL stone wool insulation is the natural way fire-resistant mainly because it is made from rock. We really don’t have to add any fireplace retardants or chemicals that enhance flammability, so it’s hardly ever likely to have a flame and has zero smoke development.

Yet another advantage is mold resistance. ROCKWOOL stone wool insulation actually repels water. There will often be moisture in the air, specially when you are conversing about crawlspaces and attics.

Getting able to repel that moisture away and permanently becoming a mold and mildew-resistant merchandise, it is going to enable with the longevity of your wall assembly as perfectly.

Attic Insulation

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

Dan: ROCKWOOL insulation batts appear in 16-inch on center or 24-inch on centre by 47 or 48 inches very long, which is the fantastic size for insulating attics. They in shape completely among the studs, so you get that entire cavity insulation.

Step a single when putting in attic insulation is to examine the existing insulation. Make certain there is no dampness, mould mildew, rodent droppings or rodents living there. Rodents really do not largely treatment for ROCKWOOL insulation. 

After inspection, basically lay the batts down perpendicular to the joists, primarily if the current insulation is only to the joists.

If the present insulation is underneath the joists, you are going to want to fill up to the joist line so you get more constant insulation.

ROCKWOOL insulation ordinarily has a 4.2 to 4.3 for every inch R-value, so you truly don’t have to have rather as a great deal to strike the greater R-value. Nevertheless, we have goods with a increased R-worth primarily for attics.

Rockwool Stone Wool Insulation Safe n Sound
Rockwool Safe’n’Sound is created specifically for seem dampening to aid reduce noise from traveling. (3 Echoes Information Studio)

What About Audio Insulation?

Dan: The greatest factor for sound insulation is density and mass, both of those of which ROCKWOOL has. 

The other portion to seem insulation is friction match, how tight it matches in that wall cavity. If you have a single location that you can not insulate effectively, all the sound is likely via that one particular section and you are minimizing that audio insulation.

For a lot more information and facts on ROCKWOOL stone wool insulation, go to and look at out our All About Insulation webpage.

Additional Examining

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