Johns Manville
Johns Manville manufactures insulation, commercial roofing systems, glass fibers and nonwovens. Its global headquarters is in Denver, Colorado and its history traces to 1858.
Details
- Section
- Product Manufacturers
- Reach
- National — operates across the United States, and in several cases Canada.
- Headquarters
- CO
- Product lines
- TPOEPDMPVCModified bitumenBuilt-up roofingPolyiso insulationFastenersCoatingsAdhesivesNonwovens
- Contractor program
JM Peak Advantage Contractor Program
Tiers and designations, named as the company names them:
- ●Peak
- ●Summit Club®
- ●Pinnacle Council®
- ●5280 Council™
- Ownership
- "A proud member of the Berkshire Hathaway family of companies."
- Self-reported scale
- Self-reported: "our 8,000 global employees" and "We also have 44 manufacturing facilities across North America and Europe." Source
A figure the company publishes about itself. It has not been independently audited, and no third-party estimate is used anywhere on this page.
- Notes on this entry
- Third-party sources describe five Peak Advantage levels; the first-party levels page lists only the four recorded here, so four are used.
Where this came from
Details on this page were confirmed from the company’s own site on August 25, 2026. The page that was read. That is a record of what the company publishes about itself — not an endorsement, a rating or a check of its work.
This entry is editorial. Johns Manville did not pay to be listed, has no control over what it says, and appears here because it operates in this part of the roofing industry. Companies change their programs, their ownership and their product lines without announcing it, so treat the date above as the age of this information and confirm anything you are relying on at the source.
Something wrong or out of date? Tell us and it will be checked against the company’s own site again.
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