Certification Practice Exam Questions

Steep-Slope Roofing Installer Certification Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the minimum recommended roof slope for asphalt shingles?

A. 1:12

B. 2:12

C. 3:12

D. 4:12

A 2:12 slope is the minimum at which asphalt shingles can perform

with additional underlayment.

• Which roofing component provides primary water-shedding

protection?

• Underlayment
• Shingles 1 / 4

• Ridge vent
• Drip edge

Shingles serve as the principal water-shedding surface on steep-slope roofs.

• What is the purpose of a starter strip?
• Increase attic ventilation
• Seal shingle edges and prevent wind uplift
• Support gutters
• Add insulation

Starter strips provide adhesive sealing to reduce shingle edge uplift at eaves.

• Where is ice-and-water shield typically required?
• Ridge
• Field of roof
• Eaves
• Gable ends

Ice-barrier membranes protect eaves from ice dam–related backup.

• What is the main purpose of flashing?
• Support decking
• Prevent water intrusion at joints
• Improve attic airflow
• Add structural strength 2 / 4

Flashing keeps water from penetrating intersections and roof penetrations.

6. Drip edge is installed:

• Under underlayment at rakes
• Over underlayment at rakes
• Over shingles
• Only at valleys

Rake drip edge goes over the underlayment to shed water properly.

• Which type of valley provides the best water discharge?
• Woven
• Closed cut
• Open metal
• Double-woven

Open metal valleys allow faster water flow and reduced debris buildup.

• Which nail placement is required for three-tab shingles?
• Anywhere on shingle field
• At the top third
• On the nail line
• Through the exposure

The nail line ensures secure fastening and proper sealant engagement. 3 / 4

• What is the most common decking material in residential roofing?

A. MDF

• OSB or plywood
• Particle board
• Cedar panels

OSB and plywood provide structural stability for shingle fastening.

• What is the purpose of attic ventilation?
• Reduce noise
• Strengthen rafters
• Prevent moisture buildup and heat accumulation
• Replace insulation

Proper ventilation reduces condensation and heat damage to roofing.

• Which roof feature requires step flashing?
• Ridge
• Sidewall intersections
• Drip edge
• Ridge vent

Step flashing protects each course adjacent to a vertical wall.

12. The correct nailing angle for shingle installation is:

• Vertical
• Perpendicular to roof deck
• Angled upward
• / 4