If your home was built before 1980, there is a chance asbestos is inside it right now.
Montana has a unique and documented asbestos problem. The W.R. Grace vermiculite mine in Libby contaminated insulation products distributed across the entire country. According to the EPA, up to 70% of vermiculite sold in the U.S. between 1919 and 1990 came from Libby, and much of it carried asbestos contamination.
Buildings constructed in Montana before the 1980s, including homes in Missoula, Lolo, Frenchtown, and Hamilton, likely contain asbestos in some form.
Mesothelioma, the cancer caused exclusively by asbestos exposure, takes 20 to 50 years to develop after initial contact.
Key Takeaway: Montana’s asbestos history is not just a Libby story. It is a statewide residential risk.
Asbestos was mixed into dozens of building materials and was considered standard practice for decades. Here is where it commonly lives:
Asbestos-containing material (ACM) that is intact and undisturbed poses minimal immediate risk. The danger activates when the material is cut, drilled, scraped, or disturbed, releasing microscopic fibers that become airborne.
If you suspect a material contains asbestos, stop work immediately. Poking, scraping, or breaking a sample yourself creates the very exposure you are trying to avoid.
A licensed asbestos inspector collects bulk material samples using OSHA-compliant protocols, including full personal protective equipment (PPE) and sealed containment bags. Samples are then analyzed using polarized light microscopy (PLM).
The report identifies the percentage of asbestos content and the fiber type present, such as chrysotile, amosite, or tremolite. Any material testing above 1% asbestos by weight is regulated under federal NESHAP standards.
Certified contractors establish a negative air pressure containment zone using 6-mil poly sheeting and HEPA-filtered air scrubbers. Workers wear full-face respirators with P100 cartridges and disposable Tyvek suits.
All removed material is double-bagged in labeled asbestos waste bags and transported to licensed disposal facilities.
Post-removal air clearance testing by a third-party industrial hygienist confirms the space is fiber-free before containment is removed.
ACM holds Montana DEQ certification, EPA lead certification, and HUBZone status (Montana Registration #15653-95).
No ACM employee has ever received a stop work order, citation, or regulatory violation. That is not common in this trade.
Step | Who Does It | Why It Matters |
Bulk Sample Collection | Certified Inspector | Lab-confirmed ID required by EPA |
PLM Lab Analysis | Accredited Laboratory | Determines fiber type and percentage |
Negative Pressure Containment | Licensed Abatement Crew | Prevents fiber migration to unaffected areas |
Material Removal and Bagging | Licensed Abatement Crew | NESHAP-compliant disposal required by law |
Air Clearance Testing | Third-Party Industrial Hygienist | Independent confirmation space is fiber-free |
If your Missoula property was built before 1980, or if you are planning any renovation work on an older structure anywhere in western Montana, the most responsible first step is a certified asbestos survey.
ACM offers surveys, full abatement, and post-removal clearance testing across Missoula, Lolo, Frenchtown, Hamilton, Stevensville, and the broader Mountain West region.
How do I know if my Missoula home has asbestos?
If your home was built before 1980, assume asbestos is present until a certified inspector collects and tests material samples.
Can I remove asbestos myself in Montana?
Montana law and EPA NESHAP regulations require licensed contractors for regulated asbestos work.
What is the difference between asbestos abatement and remediation?
Abatement refers to the physical removal or encapsulation of asbestos material. Remediation is a broader term covering cleanup of any hazardous environmental condition.
Does vermiculite insulation always contain asbestos?
Not always, but the EPA advises treating all vermiculite insulation as asbestos contaminated because the majority of U.S. vermiculite sold before 1990 came from Libby, Montana.
How long does asbestos removal take for a residential home?
Scope determines timeline. A single-room abatement may take one to two days. Whole-home projects involving multiple material types can run one to two weeks.
Is disturbed asbestos always dangerous?
Any disturbance that releases fibers into the air carries risk. There is no established safe exposure level for asbestos, according to Penn Medicine and the EPA.
What equipment does a certified asbestos crew use?
Standard PPE includes full-face respirators with P100 filters, disposable Tyvek coveralls, and gloves. Work areas are sealed with poly sheeting and HEPA air scrubbers.
Written by the owner of Abatement Contractors of Montana.
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