SMC / BMC Compounds

Sheet Molding Compound (SMC) and Bulk Molding Compound (BMC) provide great solutions when you need fiber glass reinforcement for lightweight and sustainable composites.

We have optimized our MultiStar® rovings for SMC process by creating compatibility with polyesters to promote good wettability with excellent choppability and consistent quality.  SMC materials perform excellently vs. metal. Further information can be seen on

JM’s StarStran® chopped strands are designed for your BMC applications. The custom fiber sizing binds effectively to thermoset resins for dimensional accuracy, heat resistance and strength.

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

Your Process Technology

Discover our product portfolio in SMC Rovings and BMC chopped strands.

Cookies on

The Johns Manville website employs cookies to improve your user experience. We have updated our cookie policy to reflect changes in the law on cookies and tracking technologies used on websites. If you continue on this website, you will be providing your consent to our use of cookies.

I accept cookies from this site