Johns Manville, a Berkshire Hathaway company, is a leading manufacturer and
marketer of premium-quality building insulation, commercial roofing, roof insulation, and specialty products for commercial, industrial, and residential applications.
JM’s product offerings include: Formaldehyde-free™ fiber glass building insulation,
commercial roofing membranes and roof insulations, filtration media, and mats and reinforcements.
