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Bartelt Insulation
Bartelt Insulation is a union mechanical insulation contractor serving Appleton, WI with expertise in commercial, industrial, and refrigeration projects.
About
Bartelt Insulation is a union mechanical insulation contractor serving Appleton, WI. As a signatory contractor with the International Association of Heat and Frost Insulators and Allied Workers Local 19, the company employs skilled union tradespeople committed to quality and safety. With over 75 years of experience in the insulation industry, Bartelt Insulation has built a reputation for reliable service and technical expertise.
The company's core services include piping, ductwork, firestop, cold-storage insulation, noise-control panels, marine insulation, insulated panels, and custom sewn removable insulation blankets. Bartelt Insulation specializes in industrial and commercial projects for the pulp and paper, plastics, food processing, and refrigerated dairy industries. Their experienced team brings expertise in thermal insulation, energy auditing, and custom fabrication.
Bartelt Insulation serves clients throughout Wisconsin, Upper Michigan, and Northern Illinois. Headquartered in Appleton, WI, the company operates additional locations to support projects across the Midwest region. Their geographic reach allows them to handle everything from local renovations to large-scale industrial installations.
The company maintains strong relationships with the International Association of Heat and Frost Insulators and Allied Workers and is committed to employing trained, certified union tradespeople. Bartelt Insulation holds various certifications including NIA Certified Thermal Insulation Inspector. With bonding capacity of over $1 million, the company is licensed across multiple states. Their commitment to safety is demonstrated by comprehensive safety programs and an excellent safety record.
With a team of over 50 professionals, Bartelt Insulation has the resources to handle projects ranging from small-scale retrofits to large-scale industrial facilities. The company's work has been recognized with industry awards over its 75+ years in business.
For mechanical insulation services in Wisconsin, Bartelt Insulation offers reliable, high-quality workmanship from experienced union tradespeople. Contact them to discuss your next commercial, industrial, or refrigeration project.
Service Area
Project Types
CommercialIndustrialRefrigeration
Certifications & Memberships
Certifications
Contact Information
Address
3117 N Marshall Rd, Appleton, WI 54911
Appleton, WI
Website
Visit WebsiteCompany Details
Established
1944
Employees
51-100
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mapquest.com• Accessed: 1/13/2026
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