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 10, 2026.
At a glance
- Licence status
- Voluntary certification See the source
- Routes
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- Trained in Canada: 6 steps
- Licensed in another province: 3 steps
- Trained outside Canada: 3 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 6 done
- 6 steps without a listed fee
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Begin the apprenticeship by signing a Training Agreement with a sponsor and registering it 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 -
Download the Apprenticeship Training Standard Logbook, which lists the skills and tasks the sponsor signs off on as the apprentice demonstrates proficiency.
Source
“An Apprenticeship Training Standard Logbook or Schedule of Training outlines all the skills and tasks you need to master during your apprenticeship. Your sponsor or trainer will sign off on each skill once you demonstrate proficiency.”
skilledtradesontario.ca/apprenticeship/starting-your-apprenticeship -
Complete the on-the-job work experience hours, with the sponsor or trainer signing the training standard as the required skills are demonstrated.
Source
“An apprenticeship involves practical training provided on-the-job by a skilled worker, or trainer.”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath... -
Complete the two levels of theoretical in-school training required for the trade.
Source
“A Drywall, Acoustic and Lathing Applicator apprenticeship includes two levels of theoretical training”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath... -
Upon completion of 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... -
Pass the certifying exam so that Skilled Trades Ontario issues a Certificate of Qualification in the trade.
Source
“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
6 steps without a listed fee, so the total may not be the full cost.
Licensed in another province
0 of 3 done
- 3 steps without a listed fee
-
Find a sponsor in Ontario.
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Apply for an apprenticeship program in Ontario, checking off the section of the form indicating training completed in another province.
Source
“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 -
Skilled Trades Ontario contacts the applicant to verify out-of-province training after the application is submitted.
Source
“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
3 steps without a listed fee, so the total may not be the full cost.
Trained outside Canada
0 of 3 done
- 3 steps without a listed fee
-
Complete the Trade Equivalency Assessment, which determines whether the applicant 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... -
Pass the certifying exam for the trade.
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... -
Pay a fee to be issued the Certificate of Qualification in the trade.
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
3 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 apprentice mobility into Ontario but do not state how someone already licensed in another Canadian province or territory registers in Ontario as a journeyperson. Source
“Apprentices can move anywhere in Canada without stopping their training.”
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.”
skilledtradesontario.ca/trade-information/drywall-acoustic-and-lath...
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
- 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.
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