If your home in Vancouver was built before the 1990s and you’ve been in the attic, you may have noticed a loose, pebble-like material between the joists. That material could be vermiculite insulation, and while it may seem harmless, it could actually be contaminated with asbestos — a dangerous material that can affect your health if disturbed.
What is vermiculite insulation?
Vermiculite is a lightweight, loose-fill insulation that looks like small golden-brown or silvery-grey pebbles. It was commonly used in attics throughout Canada and the U.S. from the 1940s to the early 1990s. The most well-known brand was Zonolite®, which came from a mine in Libby, Montana. Unfortunately, that mine was later found to be heavily contaminated with asbestos, and millions of homes across North America—including many in Vancouver—may still have this insulation in place.
Why is vermiculite dangerous?
Vermiculite on its own is not toxic. However, vermiculite insulation from the Libby mine is often contaminated with asbestos, especially the dangerous “friable” type. That means when the insulation is disturbed — during renovations, electrical work, or even walking in the attic — asbestos fibers can become airborne. Once inhaled, these microscopic fibers can settle in the lungs and cause long-term health issues such as:
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Lung scarring (asbestosis)
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Mesothelioma (a rare and aggressive cancer)
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Other respiratory diseases
These effects don’t show up immediately — symptoms may take years or even decades to appear.
How to tell if you have vermiculite insulation
The only way to be 100% sure is through professional testing, but here are signs that you may have vermiculite in your attic:
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Loose, pebble-like insulation that glitters in the light
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It’s lightweight and easily crumbles
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Usually fills attic joists loosely and unevenly
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Common in homes built before 1990
Never try to collect a sample yourself. Even disturbing a small amount could release asbestos into the air. Always call a certified asbestos inspector in Vancouver to take the sample safely.
What to do if vermiculite is found in your attic
If asbestos is confirmed, removal must be done by a licensed asbestos abatement company. Since January 2024, BC regulations require that any asbestos work be handled only by certified contractors and workers. This includes removal, containment, air testing, and safe disposal at approved landfill sites.
The abatement process usually involves:
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Sealing off the attic with plastic barriers
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Using HEPA air scrubbers and negative air pressure
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Workers wearing full-body suits and respirators
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Wetting down the insulation to prevent dust
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Careful collection and double-bagging of all material
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Air testing after removal to confirm safety
It may sound like a big process — but it’s the only safe way to deal with asbestos-contaminated vermiculite.
Why it’s worth removing vermiculite
Even if you’re not renovating now, removing vermiculite makes your home safer and more marketable. Home buyers in Vancouver are increasingly cautious, and some banks may not approve mortgages if asbestos is present. Getting it removed by a professional gives you peace of mind, improves resale value, and ensures you’re compliant with WorkSafeBC regulations.
Final Thoughts
If you think you may have vermiculite insulation in your Vancouver home, don’t ignore it. Get it professionally tested and, if needed, removed by a certified asbestos abatement team. It’s not just about following the law , it’s about keeping your home safe for you and your family.
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