Fibers

We offer engineered glass fibers in chopped strands and rovings to bring value to demanding technical applications. We set the benchmark high for our products, and even higher for our people you can trust.

JM Fibers video

Johns Manville sites and plants for manufacture of glassfiber reinforcement - direct rovings StarRov, assembled rovings MultiStar, chopped strands Thermoflow, StarStran, DuraChop, Chop-Pak.

JM Fibers video

Johns Manville sites and plants for manufacture of glassfiber reinforcement - direct rovings StarRov, assembled rovings MultiStar, chopped strands Thermoflow, StarStran, DuraChop, Chop-Pak.

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Chopped Strands

Our Chopped Strands expand the capabilities of thermoplastics, reinforce gypsum boards and glass nonwovens.Whether you need short or long chopped fibers, dry or wet chopped strands, JM's technical team can find the solutions for your needs.

Direct Rovings

Our StarRov? rovings are manufactured by winding glass fibers directly into a clearly defined tex or yield. Suitable for unsaturated polyester, epoxy, vinylester and thermoplastic resins.

Assembled Rovings

MultiStar? rovings are manufactured by assembling continuous glass fibers bundles into a roving with defined tex. Suitable to be chopped and reinforcing unsaturated polyester, epoxy, vinylester and thermoplastic resins.