How to Become a Lather (interior Systems Mechanic) in Ontario
Do you need certification?
Certification is voluntary
Lather (interior systems mechanic) is a voluntary trade in Ontario. You can work in the trade without a certificate.
- Protected titles
- Not listed in the sources checked
Show the source
“Because this trade is non-compulsory, this certificate does not have to be renewed, and the information of individuals practicing this trade will not appear on the Skilled Trades Ontario Public Register.”
From skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath..., checked October 11, 2026.
At a glance
- Licence status
- Voluntary certification See the source
- Routes
-
- Trained in Canada: 7 steps
- Licensed in another province: 4 steps
- Trained outside Canada: 2 steps
- Annual fees
- Not stated by the regulator Check with Skilled Trades Ontario
Your roadmap
Tick each step as you finish it. Your ticks are kept in this browser only.
Trained in Canada
0 of 7 done
- 7 steps without a listed fee
- Listed time: 5,400 months (only 2 of 7 steps state a time)
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You begin the apprenticeship by signing a Training Agreement with a sponsor.
Source
“An apprenticeship program begins when you sign a Training Agreement with a sponsor and register it with Skilled Trades Ontario.”
skilledtradesontario.ca/apprenticeship/starting-your-apprenticeship -
The signed training agreement is registered with Skilled Trades Ontario.
Source
“An apprenticeship program begins when you sign a Training Agreement with a sponsor and register it with Skilled Trades Ontario.”
skilledtradesontario.ca/apprenticeship/starting-your-apprenticeship -
You download the Apprenticeship Training Standard Logbook that lists the skills and tasks to master during the apprenticeship.
Source
“An Apprenticeship Training Standard Logbook or Schedule of Training outlines all the skills and tasks you need to master during your apprenticeship.”
skilledtradesontario.ca/apprenticeship/starting-your-apprenticeship -
You complete the on-the-job work experience hours, with your sponsor or trainer signing off skills in the training standard as you demonstrate them.
Time: 4,800 monthsTime source
“4,800 hours on the job work experience”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath...Source
“the Registrar of Skilled Trades Ontario, under the authority of section 14 of the Building Opportunities in the Skilled Trades Act, 2021, has set the hours of apprenticeship training for the trade Drywall, Acoustic and Lathing Applicator at 5,400 (approximately three years), which consists of 4,800 hours on the job work experience and 600 hours of in-school training.”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath... -
Time: 600 months
Time source
“600 hours of in-school training”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath...Source
“A Drywall, Acoustic and Lathing Applicator apprenticeship includes two levels of theoretical training”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath... -
Upon completing the apprenticeship program, Skilled Trades Ontario issues a Certificate of Apprenticeship.
Source
“Upon completion of an apprenticeship program, Skilled Trades Ontario issues a Certificate of Apprenticeship.”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath... -
You pass the certifying exam, after which Skilled Trades Ontario issues a Certificate of Qualification.
Source
“This trade has a certifying exam. When the certifying exam is passed, Skilled Trades Ontario will issue a Certificate of Qualification in this trade.”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath...
Listed fees for this route
No one-time fees listed by the regulator for these steps Check with Skilled Trades Ontario
7 steps without a listed fee, so the total may not be the full cost.
Licensed in another province
0 of 4 done
- 4 steps without a listed fee
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You find a sponsor in Ontario.
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You apply for an apprenticeship program in Ontario, checking off the section of the form indicating you completed training in another province.
Source
“2. Apply for an apprenticeship program in Ontario. - On your application you will need to check off the section of the form that you have completed training in another province.”
skilledtradesontario.ca/apprenticeship/current-apprentices -
You provide documentation such as employer letters, transcripts, or proof of apprenticeship registration from your former province so your prior experience can be assessed.
Source
“Proof of apprenticeship registration from their former province or territory: A copy of their training agreement or a registration wallet card.”
skilledtradesontario.ca/apprenticeship/sponsor-an-apprentice -
Skilled Trades Ontario contacts you to verify your out-of-province training after you submit your application, and applies any credits for prior learning and training.
Source
“4. Skilled Trades Ontario will contact you to verify your out-of-province training after you have submitted your application.”
skilledtradesontario.ca/apprenticeship/current-apprentices
Listed fees for this route
No one-time fees listed by the regulator for these steps Check with Skilled Trades Ontario
4 steps without a listed fee, so the total may not be the full cost.
Trained outside Canada
0 of 2 done
- 2 steps without a listed fee
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You complete the Trade Equivalency Assessment, which determines whether you can challenge the certifying exam for the trade.
Source
“The Trade Equivalency Assessment determines whether you can challenge the certifying exam for a trade.”
skilledtradesontario.ca/resource-hub/research/trade-reports/trade-r... -
If successful in the certifying exam, you would pay a fee to be issued a Certificate of Qualification.
Source
“If successful in the exam, you would pay a fee to be issued a Certificate of Qualification in that trade.”
skilledtradesontario.ca/resource-hub/research/trade-reports/trade-r...
Listed fees for this route
No one-time fees listed by the regulator for these steps Check with Skilled Trades Ontario
2 steps without a listed fee, so the total may not be the full cost.
Requirements
Not stated by the regulator Check with Skilled Trades Ontario
Already licensed in another province?
Not stated
The pages describe credit for out-of-province apprenticeship training but do not state how someone already licensed in another province registers in Ontario. Source
“If you’re a registered apprentice in another province or territory, you may get credit for your training in Ontario.”
skilledtradesontario.ca/apprenticeship/current-apprentices
Processing time: Not stated by the regulator Check with Skilled Trades Ontario
Credential assessment
Not stated by the regulator Check with Skilled Trades Ontario
Exams
-
certifying exam
Source
“This trade has a certifying exam. When the certifying exam is passed, Skilled Trades Ontario will issue a Certificate of Qualification in this trade.”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath... -
in-school exemption test
Source
“If the apprentice has successfully completed an in-school exemption test, the apprentice must submit a copy of their results letter to be eligible for an exemption from the corresponding level of in-school training.”
skilledtradesontario.ca/apprenticeship/current-apprentices
Language tests
Not stated by the regulator Check with Skilled Trades Ontario
Canadian experience
Not stated by the regulator Check with Skilled Trades Ontario
Supervised practice
Not stated by the regulator Check with Skilled Trades Ontario
Demand and pay
| Where | Low | Median | High | Outlook |
|---|---|---|---|---|
| Ontario | $24.00 | $35.48 | $48.73 | Moderate (3 of 5) |
| Canada | $23.00 | $33.00 | $43.75 | — |
Lathers (interior systems mechanic) in other provinces and territories
- British Columbia Voluntary certification
- Alberta Voluntary certification
- Saskatchewan Voluntary certification
- Manitoba Voluntary certification
- Quebec Certification required
- New Brunswick Voluntary certification
- Nova Scotia Voluntary certification
- Prince Edward Island Voluntary certification
- Newfoundland and Labrador Voluntary certification
- Yukon Voluntary certification
- Northwest Territories Not confirmed yet
- Nunavut Not confirmed yet
Compare lather (interior systems mechanic) licensing across Canada
Sources checked
- Drywall, Acoustic and Lathing Applicator - Skilled Trades Ontario skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath... · fetched October 10, 2026
- Start an apprenticeship - Skilled Trades Ontario skilledtradesontario.ca/apprenticeship/starting-your-apprenticeship · fetched October 10, 2026
- Current apprentices - Skilled Trades Ontario skilledtradesontario.ca/apprenticeship/current-apprentices · fetched October 10, 2026
- Sponsor an apprentice - Skilled Trades Ontario skilledtradesontario.ca/apprenticeship/sponsor-an-apprentice · fetched October 10, 2026
- Trade reports FAQ - Skilled Trades Ontario skilledtradesontario.ca/resource-hub/research/trade-reports/trade-r... · fetched October 10, 2026
Frequently asked questions
2
Do you need a licence to work as a lather (interior systems mechanic) in Ontario?
No. Certification is available, but it is not required to work in the trade in Ontario. Certification is managed by Skilled Trades Ontario.
Which exams are required?
certifying exam, in-school exemption test.
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