We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.
Materials

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

What Is Mineral Wool?

Mary McMahon
By
Updated: May 17, 2024
Views: 16,228
References
Share

Mineral wool is an industrial product available for use in insulation and fire stops. It is produced artificially with the use of molten rock or furnace slag that can be spun to create a dense, wooly material that may be treated in a variety of ways for different uses. It comes in a loose fill format as well as a blanket style, allowing technicians to cut blankets to size for insulation; molded products for pipes and other objects are also available. Manufacturers may be able to produce custom components on request from customers, depending on the nature of a project.

This product has a number of properties that make it useful for insulation. It is fire resistant, and may be installed for fireproofing or to create fire resistant barriers in structures that contain flammable materials and other fire hazards. It also blocks sound and can be used to make sound booths or to limit noise from a factory floor. Mineral wool insulation can also be useful for differential temperature control in buildings where different environments may have their own heating and cooling needs.

Loose fill can be blown or piped into walls and other structures to create insulation. Batting can be installed like other forms of sheet insulation, and can also be wrapped around objects of interest like chemical tanks. Molded forms of mineral wool can be snapped over pipes and other objects to create a snug insulating barrier to limit heat loss or transfer, depending on the setting.

Home improvement stores may sell mineral wool and can also order it for specific applications. For industrial projects, contractors may order directly from manufacturers and wholesalers to cut costs. Companies that specialize in blow-in insulation and related products can obtain a range of mineral wool types for different applications, all rated in terms of the level of insulation and protection provided. This product can be used in new construction as well as retrofits and remodels, and meets insulation standards set by regional building codes.

Products derived from rock are known as rock or stone wool, while slag wall uses furnace slag as the raw material. Mineral wool is a potential irritant and needs to be handled with care. Protective garments, eye wear, and respirators should be worn while working with this product. Fibers can enter the skin, lungs, or eyes and create irritation and discomfort. Prolonged exposure may lead to chronic inflammation and other health care problems.

Share
About Mechanics is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Link to Sources
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a About Mechanics researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments
By pastanaga — On Nov 05, 2011

@irontoenail - I feel so bad for you as a kid! That stuff is horrible to get in your skin. It's not a chemical irritant, which is good in some ways, but not so good in others, because it means all you can do is wait for the fibers to come out and wash the area.

It's basically hundreds of very thin, tiny needles being inserted into your skin. It feels like being brushed by one of those cactus with the thin spines.

So, yeah I wouldn't recommend it. Although in general, mineral wool as a batt insulation material is fantastic and I like that it is basically made from recycled industrial waste.

By indigomoth — On Nov 04, 2011

@irontoenail - It's a good thing you didn't keep playing with it, because I've heard that long term exposure can lead to people getting cancer.

I imagine that means people who work with these kinds of insulation materials though rather than just getting exposed to it once. But kids can be more vulnerable to these sorts of things, so who knows?

It's a good cautionary tale. I think it's another reason, too, to warn kids away from construction sites, or abandoned buildings. You never know what they might end up getting exposed to.

By irontoenail — On Nov 03, 2011

I had no idea that rockwool was made from actual rocks.

I remember when I was a kid, my parents were doing a bunch of renovations on the house and they brought in a couple of pallets of mineral wool to use for batting.

They were all bundled up in plastic, so my parents didn't realize they needed to warn us away.

Being kids, we almost immediately realized that these were basically big soft cushions, perfect for jumping on.

Of course, until one of them burst and we all got itchy, painful skin.

Luckily none of us breathed it in or anything, but needless to say, our parents were very annoyed.

Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
Share
https://www.aboutmechanics.com/what-is-mineral-wool.htm
Copy this link
About Mechanics, in your inbox

Our latest articles, guides, and more, delivered daily.

About Mechanics, in your inbox

Our latest articles, guides, and more, delivered daily.