Lather (Interior Systems) (416A)
Install metal framing, drywall, and interior systems for partitions, ceilings, and shaft walls.
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A Red Seal endorsement is a seal on your provincial or territorial trade certificate. It shows you have the knowledge and skills to practice your trade across Canada — earned by passing the interprovincial Red Seal exam.
What this trade covers
Install metal framing, drywall, and interior systems for partitions, ceilings, and shaft walls.
Exam format
- • 120 multiple-choice questions
- • 4-hour time limit
- • 70% required to pass
- • Closed-book
- • 125 questions, 4 hours, 70% to pass
- • Questions align with the Red Seal Occupational Standard (RSOS)
Exam blueprint (RSOS)
Questions are distributed across major work activities defined in the Red Seal Occupational Standard — the same breakdown used on the official exam.
Performs common occupational skills
Installs interior systems
Installs exterior systems
Official Red Seal resources
Source material from the Red Seal Program — administered by the Canadian Council of Directors of Apprenticeship (CCDA).