Duro-Last began in 1978 and is now the world’s largest manufacturer of prefabricated roofing systems. The Duro-Last Roofing System, contractor installation team, customer service and warranty all set the quality standards for the roofing industry. Factories, churches, and businesses of all types have chosen Duro-Last, because the system is prefabricated, durable, installed with no interruptions, energy efficient and backed by the industries best warranties

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 insulation’s, filtration media, and mats and reinforcements.