COLORADO WINDOW INSTALLATION TECHNICIAN
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2026|INSTANT
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1. What is the primary purpose of flashing around a window?
A. Improve window aesthetics
B. Prevent water intrusion
C. Increase glass strength
D. Reduce installation time
Rationale: Flashing directs water away from the window
opening and protects the structure from moisture damage.
Correct Answer: B. Prevent water intrusion
2. Which tool is most essential for ensuring a window is level
during installation?
A. Hammer
B. Chalk line
C. Spirit level
D. Utility knife
Rationale: A spirit level ensures the window is properly aligned
horizontally and vertically.
Correct Answer: C. Spirit level
,3. What is the rough opening in window installation?
A. Finished window frame size
B. Opening before installation of the window unit
C. Glass pane size
D. Trimmed exterior casing
Rationale: The rough opening is the framed space where the
window is installed.
Correct Answer: B. Opening before installation of the window
unit
4. Why is insulation used around window frames?
A. To make windows heavier
B. To prevent heat transfer and air leakage
C. To strengthen glass
D. To reduce paint usage
Rationale: Insulation improves energy efficiency by reducing
heat loss and air infiltration.
Correct Answer: B. To prevent heat transfer and air leakage
5. What is the most common material used for modern
window frames?
A. Copper
B. Steel only
,C. Vinyl
D. Marble
Rationale: Vinyl is widely used due to its durability, insulation
properties, and low maintenance.
Correct Answer: C. Vinyl
6. What is shimming used for in window installation?
A. Cleaning glass
B. Adjusting and leveling the window frame
C. Cutting drywall
D. Sealing cracks
Rationale: Shims help align the window properly within the
rough opening.
Correct Answer: B. Adjusting and leveling the window frame
7. Which safety equipment is MOST important when installing
windows at height?
A. Gloves only
B. Hard hat only
C. Fall protection harness
D. Safety glasses only
Rationale: Fall protection prevents serious injury or death
when working at elevation.
Correct Answer: C. Fall protection harness
, 8. What does “squaring a window” mean?
A. Painting the frame
B. Ensuring all corners are 90 degrees
C. Installing glass panes
D. Measuring glass thickness
Rationale: Squaring ensures the window frame is properly
aligned and not skewed.
Correct Answer: B. Ensuring all corners are 90 degrees
9. Which material is commonly used for window sealing?
A. Cement
B. Caulk
C. Sand
D. Wood glue
Rationale: Caulk provides a flexible, waterproof seal around
window joints.
Correct Answer: B. Caulk
10. What is the purpose of a drip cap above a window?
A. Decorative trim
B. Direct water away from window opening
C. Hold glass in place
D. Increase insulation
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2026|INSTANT
DOWNLOAD PDF
1. What is the primary purpose of flashing around a window?
A. Improve window aesthetics
B. Prevent water intrusion
C. Increase glass strength
D. Reduce installation time
Rationale: Flashing directs water away from the window
opening and protects the structure from moisture damage.
Correct Answer: B. Prevent water intrusion
2. Which tool is most essential for ensuring a window is level
during installation?
A. Hammer
B. Chalk line
C. Spirit level
D. Utility knife
Rationale: A spirit level ensures the window is properly aligned
horizontally and vertically.
Correct Answer: C. Spirit level
,3. What is the rough opening in window installation?
A. Finished window frame size
B. Opening before installation of the window unit
C. Glass pane size
D. Trimmed exterior casing
Rationale: The rough opening is the framed space where the
window is installed.
Correct Answer: B. Opening before installation of the window
unit
4. Why is insulation used around window frames?
A. To make windows heavier
B. To prevent heat transfer and air leakage
C. To strengthen glass
D. To reduce paint usage
Rationale: Insulation improves energy efficiency by reducing
heat loss and air infiltration.
Correct Answer: B. To prevent heat transfer and air leakage
5. What is the most common material used for modern
window frames?
A. Copper
B. Steel only
,C. Vinyl
D. Marble
Rationale: Vinyl is widely used due to its durability, insulation
properties, and low maintenance.
Correct Answer: C. Vinyl
6. What is shimming used for in window installation?
A. Cleaning glass
B. Adjusting and leveling the window frame
C. Cutting drywall
D. Sealing cracks
Rationale: Shims help align the window properly within the
rough opening.
Correct Answer: B. Adjusting and leveling the window frame
7. Which safety equipment is MOST important when installing
windows at height?
A. Gloves only
B. Hard hat only
C. Fall protection harness
D. Safety glasses only
Rationale: Fall protection prevents serious injury or death
when working at elevation.
Correct Answer: C. Fall protection harness
, 8. What does “squaring a window” mean?
A. Painting the frame
B. Ensuring all corners are 90 degrees
C. Installing glass panes
D. Measuring glass thickness
Rationale: Squaring ensures the window frame is properly
aligned and not skewed.
Correct Answer: B. Ensuring all corners are 90 degrees
9. Which material is commonly used for window sealing?
A. Cement
B. Caulk
C. Sand
D. Wood glue
Rationale: Caulk provides a flexible, waterproof seal around
window joints.
Correct Answer: B. Caulk
10. What is the purpose of a drip cap above a window?
A. Decorative trim
B. Direct water away from window opening
C. Hold glass in place
D. Increase insulation
