No. Asbestos-containing materials must be abated by a licensed asbestos contractor before spray foam can be installed in the same area. Columbus homes built before 1985 may have vermiculite attic insulation that contains asbestos; testing is the first step.
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Vermiculite attic insulation manufactured from the Libby, Montana mine (sold under the Zonolite brand from the 1940s through the early 1990s) contains asbestos at varying concentrations. Columbus metro homes built between 1940 and 1985 may have Zonolite vermiculite in the attic; testing is the only way to know definitively. Per EPA guidance, asbestos-containing material must be either left undisturbed in place or abated by a licensed contractor; it cannot be covered, encapsulated, or worked around without proper handling. The Columbus spray foam decision sequence when vermiculite is present. (1) Test the vermiculite for asbestos content. Sample collection and lab analysis runs $200-$400 for a small project. Columbus labs that handle the analysis include Eurofins and similar accredited environmental labs. (2) If the vermiculite tests positive for asbestos, abatement is required before any foam install. Asbestos abatement in Columbus attics typically runs $1,500-$5,000 depending on extent. The abatement contractor must be licensed by the Ohio Department of Health Asbestos Program; verify the license number before signing. (3) After abatement, the attic is decontaminated and clearance-tested. The foam install can then proceed normally. (4) If the vermiculite tests negative for asbestos, it can be left in place. Spray foam can be added on top of vermiculite (open-cell on the attic floor) as part of a normal install, though many installers prefer to remove the vermiculite first for a cleaner install. The asbestos question matters for liability reasons as well as health. A Columbus foam contractor who sprays over untested vermiculite assumes potential liability for asbestos disturbance; reputable installers refuse to proceed without testing. If a homeowner asks an installer to skip the testing and "just spray over it", that is a request that puts both parties at risk. The right sequence: test first, abate if needed, foam second. The total project cost for a Columbus home with positive-test vermiculite runs $7,500-$13,500 (abatement + foam), about 50-80 percent above a clean-attic project. The energy savings and resale value still typically support the project economics over 5-10 year horizons.