Installer Steep-Slope Exam Practice

NRCA ProCertification Roof System Installer Steep-Slope Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the minimum slope for a roof to be considered “steep-slope”?

A) 1:12

B) 2:12

C) 4:12

D) 6:12

Steep-slope roofs are typically defined as those with a slope of 4:12

or greater to allow for proper water drainage.

• Which type of underlayment is typically used under asphalt shingles

on steep-slope roofs?

• Plywood sheathing 1 / 4

• Felt or synthetic underlayment
• Ice and water shield
• None

Ice and water shield is used in valleys and eaves to prevent leaks due to ice dams or wind-driven rain.

• What is the primary purpose of roof flashing?
• Support the roof structure
• Prevent water penetration at roof intersections and penetrations
• Provide thermal insulation
• Add aesthetic appeal

Flashing directs water away from critical areas, such as chimneys, valleys, and vents.

• Which fastener is recommended for asphalt shingles on a wood deck?
• Roofing nails with smooth shank
• Roofing nails with galvanized or stainless steel heads and ring

shanks

• Drywall screws
• Concrete nails

Ring-shank or corrosion-resistant nails provide superior holding power and resist corrosion.

• What is the typical exposure for a standard 3-tab asphalt shingle?
• 2 inches
• 4 inches 2 / 4

• 5 inches
• 6 inches

Most 3-tab shingles are installed with a 5-inch exposure to meet manufacturer guidelines.

• What is the recommended minimum overlap for wood shake shingles?
• 1 inch
• 2 inches
• 3 inches
• 4 inches

Proper overlap ensures water shedding and prevents leaks.

• Which component is installed at the roof ridge to allow proper

ventilation?

• Drip edge
• Soffit vent
• Ridge vent
• Ice and water shield

Ridge vents allow hot, moist air to escape from the attic while preventing water entry.

• What is the maximum spacing between roof trusses for most steep-

slope asphalt shingle installations?

• 12 inches
• 16 inches
• 24 inches 3 / 4

• 36 inches

24-inch spacing is standard for residential trusses under asphalt shingle guidelines.

• Which type of metal is most commonly used for roof flashings?
• Aluminum
• Galvanized steel
• Copper
• Zinc

Galvanized steel is durable, corrosion-resistant, and cost-effective for most flashings.

• What is the purpose of a drip edge?
• Enhance aesthetic appeal
• Direct water away from the fascia and prevent wood rot
• Provide thermal insulation
• Support shingles

Drip edges guide water off the roof and protect underlying wood components.

• How far should asphalt shingles overhang the eaves?
• 0–1 inch
• 0.5–1 inch
• 0.5–1 inch for standard shingles
• 2 inches
• / 4