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Fibers

Johns Manville fibers may be hidden from view, but their effects are plain to see. We combine our glass fibers with plastics to mold stiffer, stronger and lighter weight products. Our fibers make filters efficient and mufflers quiet. Our rovings improve mechanical performance by winding, weaving, spraying or mixing and combining them with resin to mold parts. From lowering a vehicle’s weight for better fuel economy to making wallboard stronger and fire resistant, JM fibers deliver a wide range of benefits that are easy to appreciate. We cover an array of markets and applications, which we detail below to help guide you in the right direction. You’ll also find detailed product information about our fiber offerings.   

In addition, we can tailor our products or solutions to satisfy the technical needs of your particular application. We will help ensure the solutions we manufacture for you are made with fibers of the highest quality. It is our goal to give you the highest level of confidence throughout every stage of the process.  

We ship globally!  Contact a regional sales office for details.

  Your Process Technologies

JM offers a wide variety of cost effective products as well as innovative technical solutions to match evolving needs in thermoplastic and thermoset processes.

Product Groups

Your market has its own challenges and unique needs that require innovative solutions. We work the details to meet or exceed the specific fiber requirements of every industry. Our ability and desire to get our materials right embodies our commitment to our customers. We never lose sight of the importance of each customer.

Chopped Strands
Dry chopped strands are used as reinforcements in thermoset / thermoplastic composites and gypsum board.
Direct Roving
StarRov® direct rovings are gathered into consistent strand counts and wrapped onto spools for application as composite reinforcements in various markets.
Assembled Roving
MultiStar® assembled rovings are wound together to form a multi-end roving package suitable for unwinding, and choppable in different composite processes.
Sliver
Staple glass fibers for filtration, battery thermal & sound insulation.
Microfiber
Fine, high-purity fibers for specialty papers and filtration.