Fiberglass In Mattresses: What You Should Know

Many shoppers ask if our mattresses contain fiberglass. The Beloit Mattress Company does not use fiberglass in the mattresses we manufacture.

This page focuses on smooth-top constructions because that is where consumers most commonly ask questions about fiberglass in the broader mattress market.

If you own a quilted or tufted top Beloit mattress, it will use either a rayon/cotton blend or natural wool, depending on the model.

Not certain if you do or don’t – chat with a bedmaker.

Fiberglass Fabric Composite Roll Material

Why do people ask about fiberglass?

Some mattresses sold in the broader market do use fiberglass as part of their fire barrier system. These conversations often focus on smooth-top mattresses (all-foam or hybrid models) that use a “sock”-style fire barrier. This is a sleeve-like cover that encases the mattress layers to meet federal flammability standards (16 CFR Part 1633).

The key things to understand:

  • Fire barrier materials and methods vary widely by manufacturer and by specific model.
  • “Sock”-style barriers are very common in smooth-top, no-tuft mattresses (both all-foam and hybrids).
  • These barriers can be made from:
    • Inherent FR rayon
    • Fiberglass
    • Or a blend of the two

Not every mattress uses fiberglass, and many reputable brands have moved away from it in favor of alternative flame-retardant fabrics or knit barriers.

If you’re concerned about fiberglass in your current mattress (or one you’re considering), the best step is to contact the manufacturer directly. They can confirm the exact materials used in the fire barrier for your specific model.

At The Beloit Mattress Company, we prioritize transparency and avoid fiberglass in our fire barriers, our mattresses use safe, non-fiberglass alternatives that still meet all federal safety standards. If you’d like details on our construction or have questions about any of our models, just let us know, happy to share!

Federal flammability compliance

In the United States, mattresses must comply with federal flammability standards, including requirements for smoldering ignition and open flame (16 CFR 1632 and 16 CFR 1633). (U.S. Consumer Product Safety Commission). The Beloit Mattress Company builds mattresses to meet these standards while using non-fiberglass barrier options.

Mattress styles and where fiberglass questions usually come up

There are three main styles of mattresses made today:

  1. Quilt top
  2. Tufted top
  3. Smooth top

Given how these styles are commonly constructed across the industry, fiberglass concerns are often discussed in connection with smooth-top mattresses in the broader market.

Quilt-top and tufted-top designs use different approaches and are not typically where consumers encounter discussions of fiberglass-based fire barriers.

What We Use Instead of Fiberglass

We meet federal flammability standards using fire barrier materials such as inherent FR rayon-based barriers, selected for safety, performance, and long-term durability.

Basics Royal Quilted / Flippable Mattress

Quilt top mattresses

Our quilt-top mattresses use a inherent FR rayon-cotton blend barrier layer placed directly under the top fabric and above the quilting foam.

How It Works In Simple Terms

  • The flame-resistant rayon fibers (derived from wood pulp) help form a protective char layer when exposed to flame.
  • The cotton fibers beneath help insulate and protect the foam from ignition.

This is the same general barrier approach we have successfully used in our quilted mattresses for many years.

Heirloom Tuft Top Mattress

Tufted top mattresses

Our tufted-top mattresses also use a natural wool fire barrier selected to meet federal standards and to match the mattress’s design.

90th Anniversary Restore Smooth Top Hybrid Mattress

Smooth top mattresses (foam and hybrid)

Smooth-top designs often use a “sock”- style fire barrier system. In our smooth-top mattresses, we use an inherent FR rayon-based barrier instead of fiberglass.

This is why many online discussions about “fiberglass” point to smooth-top mattresses in the broader market, and why our smooth-top models are commonly the focus of fiberglass questions.

Shop Our 6 Smooth Top Fiberglass-free Hybrid Models

 

For shoppers researching fiberglass-free options – shop our smooth-top hybrid models.

SHOP HYBRIDS

How to verify what is in your mattress

The fastest way to verify the materials is to check with your mattress manufacturer. They will tell you which barrier materials were used.

Important Care Note

Never remove a mattress cover unless the manufacturer specifically states it is removable and provides safe removal instructions. Removing certain covers can damage internal layers and create a mess, even when fiberglass is not present.

Still have questions about your mattress materials or fire barrier system? Call or chat with us. You can also send a photo of your law label, and we will help you get a clear answer. If you’re looking for a mattress built to your exact specifications, you can also order a custom made mattress and choose materials, size, and comfort options tailored to your needs.

FAQ on Fiberglass In Mattresses

Do you put fiberglass in any Beloit Mattress Company mattresses?

No. We do not use fiberglass in the mattresses we manufacture.

Why do you call out smooth top models on this page?

Fiberglass questions most commonly appear online in connection with certain smooth-top, all-foam or hybrid-style (sometimes called “tight-top”) constructions in the broader mattress market. This page is designed to address the specific shopper concern about this mattress style.

My has a rayon or rayon blend barrier. What does that mean?

Rayon is commonly used as a flame-resistant component in barrier systems. It is made from wood pulp and is designed to char when exposed to flame to help protect underlying materials. The fiber is inherently fire-resistant. It is not topically treated to make it fire-resistant.