We build environmentsâ„¢. For more than 150 years, Johns Manville has focused on developing materials to make diverse environments stronger, more durable, and more energy efficient and comfortable. We manufacture premium-quality building and mechanical insulation, commercial roofing, glass fibers and nonwoven materials for commercial, industrial and residential applications. JM products are used in a wide variety of industries including building products, aerospace, automotive and transportation, filtration, commercial interiors, waterproofing and wind energy.

Through our 7,000 global employees, JM provides products to more than 85 countries and operates 45 manufacturing facilities in North America, Europe, and China. Since 1988, JM's global headquarters has been located in downtown Denver.
SuperDuct® RC duct board

Johns Manville SuperDuct RC duct board i...

Climate Pro® blow-in fiber glass insulation

Johns Manville Climate Pro blow-in fiber...

Sound & Fire Block® Mineral Wool

Johns Manville Sound & Fire Block reduce...

ComfortTherm® batts and rolls insulation

Johns Manville ComfortTherm batts and ro...

Microlite® XG™ Formaldehyde-free™ duct wrap insulation

Microlite XG Formaldehyde-free duct wrap...

Flex-Glas® EQ Formaldehyde-free™ flexible duct insulation

Johns Manville Flex-Glas EQ Formaldehyde...

JM TPO Thermoplastic Polyolefin (TPO) Membrane

JM TPO thermoplastic polyolefin (TPO) me...

JM TPO Detail Membrane

JM TPO Detail Membrane is made from a fl...

Energy Curb Solar Roofing System

A non-penetrating, lightweight, PV-mount...

Energy Anchor Solar Roofing System

A lightweight, rooftop PV-mounting solut...

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