Don't scrape it yet. In Ontario, a ceiling like this is tested by taking at least three samples to a lab, and a result of 0.5 per cent asbestos or more changes who should do the work.
If you live in one of the older detached pockets of Concord, such as Glen Shields, west of Dufferin, the City of Vaughan dates much of the housing there to the 1970s and 1980s. Textured ceilings are the finish many owners of those homes want gone. Before anyone picks up a scraper, there is one question to answer: what is actually in it.
Why you cannot judge it by eye
The Canadian Centre for Occupational Health and Safety (CCOHS) is blunt about this: you cannot tell if a product contains asbestos just by looking at it, and the only way to tell is to have it tested by a laboratory. A year of construction does not settle it either, which is why the test exists. Health Canada adds that asbestos is a health risk mainly when fibres are in the air you breathe, and that fibres can be released when materials are cut or damaged. Scraping, sanding and drilling a ceiling are exactly the kinds of work that do that.
What the Ontario sampling rule actually says
Ontario Regulation 278/05, Asbestos on Construction Projects and in Buildings and Repair Operations, is written for workplaces, but its testing method is a useful yardstick for anyone with a textured ceiling. It says:
- Samples are analysed by the U.S. EPA bulk-materials method (EPA/600/R-93/116).
- Samples must be collected randomly by a competent worker and represent each area of uniform material.
- For surfacing material, which the regulation describes as material applied by spraying or troweling, such as acoustical plaster on ceilings, the minimum is 3 samples for an area under 90 square metres, and 5 for 90 to under 450 square metres.
- A sample with 0.5 per cent or more asbestos by dry weight is asbestos-containing material, and once one sample is positive, the whole area of that material is treated as asbestos-containing.
The regulation also says it does not apply to the owner of a private residence the owner or the owner's family lives in. That exemption is about the owner's paperwork. It does not change what is in your ceiling, and it is not a reason to skip the test. Treat the three-sample figure as a sound minimum for a typical room, and ask the lab or consultant how many samples they take and how they take them.
While you wait for the result
CCOHS lists sanding or disturbing acoustical plaster that gives ceilings a textured look among the things to avoid, along with drilling or sawing asbestos materials. It also says it is not recommended that asbestos products be painted. So until the lab report is in your hands, hold off on the scraper, the sander, a new light fixture drilled through the texture, and the roller. If the ceiling is intact and nobody disturbs it, there is no rush.
If the result is negative
A clean result turns this into ordinary finishing work: damp-scrape the texture, repair the drywall underneath, skim, prime and paint. Keep the report with your home records, and note which areas the samples came from. If you later open a ceiling in another room with the same texture, ask whether the sample covered it; the regulation's rule is per area of uniform material, so a second texture needs its own samples.
If the result is positive
Health Canada says that if you are renovating and suspect materials contain asbestos, you should contact a trained and qualified asbestos professional, who can test and carry out the work in a controlled, safe way. CCOHS suggests confirming the contractor is qualified and insured for asbestos work, and that they control dust, use proper protective equipment and handle clean-up and waste removal. Ontario's regulation sorts asbestos work into three types by risk. Even a power tool with no dust-collecting attachment on non-friable material sits in the highest, Type 3, category, which is a good reason this is not a weekend job.
Whether the safest plan is to leave the texture alone, enclose it or have it removed is a decision for that professional, who has seen the lab report. Once the asbestos work is done and cleared, the drywall repair and paint are ordinary jobs again.
The 2018 ban is not a clean bill of health
Canada's Prohibition of Asbestos and Products Containing Asbestos Regulations came into force on December 30, 2018. They stop asbestos and new asbestos products from being made, imported, sold or used, but material already installed in homes is generally outside the ban. It is also worth knowing that a house can have had its ceiling redone or patched at any point since it was built, so a Glen Shields home from the 1970s may carry more than one kind of ceiling finish.
Quick answers
Can I tell if my popcorn ceiling has asbestos by looking at it?
No. The Canadian Centre for Occupational Health and Safety says you cannot tell by looking, and a laboratory test is the only way to know.
How many samples does Ontario require for a ceiling?
Ontario's asbestos regulation sets a minimum of three bulk samples for a sprayed or troweled ceiling surface under 90 square metres, and five from 90 up to 450 square metres.
What counts as a positive test in Ontario?
A sample with 0.5 per cent or more asbestos by dry weight counts as asbestos-containing material. One positive sample means the whole ceiling area from that material is treated as asbestos-containing.
Does the 2018 asbestos ban mean my old ceiling is safe?
No. Canada's ban took effect on December 30, 2018 and covers new manufacture, import, sale and use. Material already installed in a home is generally not caught by it.
Who should I call if the ceiling tests positive?
Health Canada says to contact a trained, qualified asbestos professional rather than removing it yourself. Rhodex can help with the drywall and paint finishing afterwards.
Test first, then decide
The sequence is simple and it saves money: sample, lab report, then the plan. A scraped ceiling that turns out to contain asbestos is a much bigger job than the one you set out to do, and a negative result costs you only the lab fee and a few days.
Related reading
- More home repair guides for Concord
- Scraping and Repainting Trim on a 1950s Concord Home: Test for Lead First
- Popcorn ceiling removal from Rhodex: get a fixed price
- Aluminum Wiring in a 1970s Glen Shields Home: What ESA Says and What to Keep
- How Do I Know If a Contractor Is Licensed in Ontario?
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