Manville (JM), a Berkshire Hathaway company, is a leading
manufacturer and marketer of premium-quality building and
specialty products. Since 1858, the Denver-based company has
annual sales of approximately $2.5 billion and holds
leadership positions in all of the key markets that it serves.
Johns Manville employs approximately 8,500 people and
operates 43 manufacturing facilities in North America, Europe
and China. JM is a leading manufacturer and marketer of
premium-quality building insulation, commercial roofing, roof
insulation, and specialty products for commercial, industrial
and residential applications. Its product offerings include:
formaldehyde-free fiber glass building insulation, commercial
roofing membranes and roof insulations, filtration media, and
mats and reinforcements.