What Vermiculite Insulation Looks Like
Vermiculite is a loose, pebbly fill, usually grey-brown or gold, that glints a little in a flashlight beam. Builders and owners poured it into attics and walls for decades, and a large share of what Canadians bought was mined at a site that also held asbestos. It often hides under newer insulation in older houses.
If you think you have it, leave it alone. Health Canada's advice is that sealed, undisturbed vermiculite is the lowest risk, and that professionals should handle it if it must be removed. Keep the vacuum and the broom away from it, and do not store boxes in the attic above it.
Ontario Rules For Disturbing Vermiculite
Ontario Regulation 278/05 classes the disturbance of more than about 11 square feet of asbestos-containing vermiculite as a Type 3 asbestos operation. Trained asbestos abatement workers carry it out after the Ministry of Labour has been notified, inside a sealed work area with filtered air, and the air is tested before the area reopens.
That is not a job for a general insulation crew, and we never remove vermiculite ourselves.
How We Handle Vermiculite In An Attic
First, we stop work and photograph what we found. Second, a sample is sent to a proper lab, and testing usually costs about $300 to $800. Third, when the lab confirms asbestos, we arrange removal by a trained asbestos abatement contractor. Across the market, abatement runs from roughly $8,000 to $25,000, depending on the size of the attic and how much vermiculite is in it.
Finally, once the abatement contractor's air clearance is done, we come back to seal the attic and blow in new insulation. If the lab finds no asbestos, we talk through the next step with you, because asbestos can sit unevenly through loose fill and one sample can miss it.
Why Vermiculite Abatement Costs More Than Insulation Removal
Abatement costs more than standard insulation removal because of everything around the work. It needs a sealed enclosure, negative air machines with HEPA filters, protective suits, a decontamination area for the workers, special waste handling and air testing at the end. The attic itself may be no bigger than any other. A lab result is the only way to know whether any of that is needed.
Vermiculite Found During A Home Sale
Vermiculite often shows up on a home inspection report, especially in older houses around the Courthouse Area and the Armoury District. A test result gives buyers and sellers something solid to work with. Our pre-sale and home inspection insulation removal page covers timing around a closing.