Based on the Red Seal Glazier exam blueprint: curtain wall, storefront, entrances, residential glazing, specialty glass and servicing
Practice on the go and jump straight back to where you left off.
About the certification
In Ontario, the Glazier trade is called Architectural Glass and Metal Technician, trade code 424A, a non-compulsory trade administered by Skilled Trades Ontario. The apprenticeship is 8,000 hours: 7,280 on the job and 720 in school. Across Canada it is the Red Seal trade Glazier, so passing the Certificate of Qualification exam also earns the interprovincial Red Seal endorsement.
The Red Seal exam has 120 multiple-choice questions in 5 blocks: common occupational skills (20 questions), commercial window and door systems (41), residential window and door systems (17), specialty glass, products and glass systems (19) and servicing (23). Installing commercial window and door systems is the heaviest task with 27 questions. Between 20 and 30% of the questions test knowledge and recall, 65 to 75% procedural and application, and under 10% critical thinking.
ExamHub's free 424A practice quiz has 182 original questions weighted to the real exam blocks and tasks, with an explanation and a source for every answer. The Red Seal standard lists topics and terminology rather than technical values, so questions test the trade's terms, processes and safety rules, and safety questions use Ontario's Construction Projects regulation (O. Reg. 213/91).
What's covered
Categories follow the 15 Red Seal exam tasks, weighted like the real exam.
Try a few
Five sample questions from the question bank, with the answer and explanation.
Why: The standard lists the methods for un-crating glass: ensuring proper lean, wedging safely, opening the correct side, checking for broken glass and using correct handling techniques. Releasing a crate with the wrong lean or from the wrong side can let lites fall.
Why: A spandrel is a panel that covers the floor slabs and columns on the exterior of a building between windows. It is also known as a non-vision window.
Why: Section 26 applies the fall protection requirements when a worker may fall more than 3 metres. A 3.5 metre drop exceeds that threshold, so a guardrail or other fall protection system must be in place before the crew works at the edge.
Why: A casement window is hinged at the side and swings out. An awning window is hinged at the top, a hopper at the bottom, and a single-hung unit does not swing at all.
Why: The standard's trade profile lists leaded x-ray glass as the specialty glass installed in hospitals. Low-iron glass is tied to museum showcases, acid-etched glass to bird-friendly glazing, and patterned glass is a decorative type.
FAQ
The Red Seal Glazier exam has 120 multiple-choice questions. ExamHub's bank has 182 questions, and Test Mode draws a 120-question timed simulation.
The Red Seal exam page does not publish a pass mark or a time limit. ExamHub's practice test uses the usual Red Seal 70% pass mark and allows up to 4 hours.
5 blocks: common occupational skills (20 questions), commercial window and door systems (41), residential window and door systems (17), specialty glass, products and glass systems (19) and servicing (23). Installing commercial window and door systems is the heaviest task with 27 questions.
No. The trade is called Architectural Glass and Metal Technician (424A) in Ontario and is non-compulsory. Skilled Trades Ontario issues the Certificate of Qualification when the exam is passed, and the trade is part of the Red Seal program.
No. These are original practice questions written from the Red Seal standard and free public sources. They are not copies of exam questions.