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 Troy home has vermiculite in the attic, it should be treated as containing asbestos until proven otherwise. US Asbestos Contracting provides licensed vermiculite removal throughout Troy and Oakland County.
Vermiculite Risk in Troy
With approximately 52% of Troy's homes built before 1980, vermiculite attic insulation is a real concern — particularly in mid-century homes in neighborhoods like Troy historic district, Big Beaver Road corridor, Maple Road area, Somerset area. The EPA advises avoiding any disturbance of vermiculite until professionally tested and removed.
Vermiculite Removal Cost in Troy (2026)
- Typical Troy attic (800–1,200 sq ft): $3,500–$8,000
- Large attic (1,200+ sq ft): $7,000–$15,000+
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