Asbestos Air Testing and Clearance
If you’ve had asbestos removed from your home or business, the job isn’t done until the air has been tested and cleared.
At Raleigh Asbestos Removal Pros, we handle this final step for every abatement project, and we also test independently for property owners who just want to know what’s in the air before they decide on next steps.
Clearance testing confirms that fiber levels in a space have dropped back to a safe range after removal work. Without it, you’re relying on a contractor’s word that the job went well. With it, you have a lab result.
What We Actually Do
We collect air samples using calibrated pumps and cassette filters, following the same protocol regardless of whether the job is a small bathroom tile removal or a full commercial teardown.
Samples go to an accredited third party lab, never one we own or profit from. That separation matters more than most homeowners realize.
- Pre-abatement testing to identify whether suspect material actually contains asbestos
- Final clearance air testing after removal, required under NC and federal guidelines for most projects
- Personal air monitoring for workers during active removal
- Background testing for buildings with no known removal history but old materials still in place
PCM vs. TEM: Which Test You Need
Most clearance jobs use Phase Contrast Microscopy (PCM), which counts fibers but can’t confirm they’re asbestos specifically. It’s fast, it’s the industry default under OSHA’s exposure standard of 0.1 fibers per cubic centimeter, and it’s usually enough for residential clearance.
| Method | What It Confirms | Typical Use | Turnaround |
|---|---|---|---|
| PCM | Total fiber count, not fiber type | Standard clearance | Same day to 24 hrs |
| TEM | Confirms asbestos fibers specifically | Schools, contested results, some commercial jobs | 24-72 hrs |
Schools and some commercial properties require TEM under AHERA rules. If you’re not sure which applies to your project, ask us before the removal crew even shows up. It changes the sampling plan.
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Equipment We Trust
Sample pumps matter more than people think. We run SKC pumps for field collection because they hold calibration reliably across long sampling runs, and our crews wear 3M respirators rated for asbestos work, not the cheap dust masks you’ll see on some job sites. Filters go out for analysis at labs using Zefon or equivalent accredited equipment. None of this is a brand endorsement for its own sake. It’s what keeps a sample defensible if a result ever gets challenged.
Why This Matters for Older Raleigh Properties
A lot of the housing stock around the Triangle was built before 1980, back when asbestos insulation, floor tile, and popcorn ceiling texture were standard materials. The EPA still flags any building from that era as a candidate for testing before renovation. That’s not scare talk. It’s just the timeline of when these products were phased out.
Home flips and older commercial buildings are where we see the most surprises. Someone buys a 1965 ranch, starts a kitchen demo, and finds transite panel behind the cabinets. That’s when a phone call to us before day two of demolition saves a lot of money.
Getting Your Results
We send lab reports directly to you, not summarized, not filtered. You’ll see the actual fiber counts and the pass/fail threshold used. If a sample fails clearance, we tell you plainly what that means and what re-cleaning looks like. No hedging, no upsell pressure.
Call us before you sign off on any removal job, ours or anyone else’s. A clearance test is cheap insurance against redoing work later.