Advanced composites engineering in Defiance, Ohio

Welcome to Johns Manville, your trusted general contractor located at 1410 Columbus Avenue, Defiance, Ohio. We specialize in providing premium-quality insulation, commercial roofing, and fibers and nonwovens for a variety of applications, including commercial, industrial, and residential projects. Our extensive range of services and products is designed to meet the diverse needs of our clients across Canada and the United States. At Johns Manville, we pride ourselves on offering an array of insulation solutions for all building types, including residential, commercial, manufactured housing, and metal buildings. Our product line includes building insulation, HVAC insulation, mechanical insulation, and specialty products designed for OEM applications, such as aerospace, appliances, and specialty transportation.