Johns Manville

About Johns Manville

Johns Manville is a US-based manufacturer of insulation materials, commercial flat roofing systems, and fibers and nonwovens for commercial, industrial, and residential applications. The product portfolio includes building and technical insulation (glass fiber, mineral wool, calcium silicate, polyisocyanurate, XPS), roofing membranes based on TPO, PVC, EPDM, SBS, APP, and BUR, as well as engineered products such as glass fiber mats, polyester nonwovens, filter media (HEPA/ULPA, HVAC, industrial filtration), battery products for lead-acid batteries, and reinforcement fibers for thermoplastics, thermosets, and SMC. Customer industries include aerospace, automotive, HVAC, household appliances, filtration, wind energy, flooring, and building waterproofing. Headquartered in Denver, Colorado, the company employs around 8,000 people at 46 production sites in North America and Europe, including five European plants in Berlin, Bobingen, Wertheim, and Steinach (Germany) as well as Trnava (Slovakia). Since 2001, Johns Manville has been part of Berkshire Hathaway; annual revenue exceeds 4.5 billion USD.

Site

Berlin

Materials

Glass fiber (Fiberglass Mat / Chopped Fiberglass / Single-End Roving / Multi-End Roving), Polyester nonwoven (Polyester Nonwoven), Polyisocyanurate (insulation), Extruded polystyrene (XPS), Mineral wool (Industrial Mineral Wool), Calcium silicate, TPO (roofing membrane), PVC (roofing membrane, jacketing)

Founded

1858

Employees

8000

Industries

Building insulation, Technical insulation (pipe, marine, industrial), OEM insulation (aerospace, household appliances, HVAC, transport), Commercial flat roofing, Filtration (HVAC, HEPA/ULPA, industrial), Battery products (lead-acid)

1. 01

   Raw material processing (glass fiber, polymer)

2. 02

   Manufacture of insulation materials, roofing membranes, and nonwovens

3. 03

   Finishing and converting

4. 04

   Distribution to construction, industry, and OEM

Locations

Products and Applications

Inside the production

History

1. 1858

   Founding of the H.W. Johns Manufacturing Company by Henry Ward Johns in New York City

2. 1886

   Founding of the Manville Covering Company by Charles B. Manville

3. 1901

   Merger to form the H.W. Johns-Manville Company

4. 1916

   Operation of the Jeffrey Mine in Asbestos (Canada), one of the largest chrysotile asbestos open-pit mines in the world

5. 1927

   IPO; 1928 listing on the NYSE

6. 1929

   Town of Manville, NJ named after the company

7. 1930–1982

   Member of the Dow Jones Industrial Average; Fortune 500 company 1955–1996

8. 1978

   Acquisition of Olinkraft (~7,100 employees)

9. 1979

   Acquisition of Schuller GmbH – market entry into Europe

10. 1982

    Chapter 11 insolvency due to asbestos liability (until 1988); renaming to Manville

11. 2001

    Acquisition by Berkshire Hathaway

12. 2026

    John Vasuta becomes President & CEO effective 01.08.2026