Vermiculite attic insulation — primarily sold as Zonolite — was installed in millions of homes through the 1990s. An estimated 70% came from an asbestos-contaminated mine in Libby, Montana. If your Warren home has vermiculite in the attic, it should be treated as containing asbestos until proven otherwise. US Asbestos Contracting provides licensed vermiculite removal throughout Warren and Macomb County.
Vermiculite Risk in Warren
With approximately 75% of Warren's homes built before 1980, vermiculite attic insulation is a real concern — particularly in mid-century homes in neighborhoods like South Warren, Center Line-adjacent, Van Dyke corridor, Hoover Road area. The EPA advises avoiding any disturbance of vermiculite until professionally tested and removed.
Vermiculite Removal Cost in Warren (2026)
- Typical Warren attic (800–1,200 sq ft): $3,500–$8,000
- Large attic (1,200+ sq ft): $7,000–$15,000+
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