Installer Asphalt Shingle Exam Practice

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

• What is the primary purpose of underlayment in an asphalt shingle

roof system?

• To provide structural support
• To act as a moisture barrier
• To serve as insulation
• To improve aesthetics
• To act as a moisture barrier

Rationale: Underlayment is installed beneath shingles to protect the roof

deck from water infiltration in case of shingle damage or wind-driven rain. 1 / 4

• Which type of asphalt shingle is considered self-sealing?
• Three-tab shingle
• Laminated shingle
• Strip shingle
• Fiberglass shingle
• Fiberglass shingle

Rationale: Fiberglass shingles typically have an asphalt coating and

adhesive strip that bonds during installation, making them self-sealing.

• What is the minimum slope recommended for asphalt shingle roof

installation?

A. 1:12

B. 2:12

C. 3:12

D. 4:12

C. 3:12

Rationale: Asphalt shingles are generally recommended for roof slopes of

3:12 or greater to ensure adequate water shedding.

• What is the primary function of a starter course on an asphalt shingle

roof?

• To provide insulation
• To create a straight edge for shingles
• To prevent algae growth
• To enhance roof ventilation 2 / 4

• To create a straight edge for shingles

Rationale: Starter courses provide a straight edge at eaves and rake edges

and improve wind resistance.

• What type of nail is typically recommended for asphalt shingle

installation?

• Aluminum nail
• Roofing nail with a large flat head
• Finishing nail
• Common nail
• Roofing nail with a large flat head

Rationale: Roofing nails with a large flat head ensure proper shingle

fastening and wind resistance.

• How much should asphalt shingles overhang the eave edge?
• 1/4 inch
• 1/2 inch
• 3/4 inch
• 1 inch
• 1/2 inch

Rationale: A typical overhang of 1/2 inch allows proper water runoff into

gutters and protects the fascia.

• Which of the following is a key indicator of proper roof ventilation?
• Shingles that curl immediately 3 / 4

• Balanced intake and exhaust vents
• Excessive moisture in the attic
• Overheated shingles
• Balanced intake and exhaust vents

Rationale: Proper ventilation maintains temperature and moisture control,

prolonging shingle life.

• What is the recommended exposure for a standard three-tab shingle?
• 4 inches
• 5 inches
• 6 inches
• 7 inches
• 6 inches

Rationale: The exposure is the portion of the shingle visible after

installation; for three-tab shingles, it is typically 5–6 inches.

• When installing shingles on a high-wind area, what is often required?
• Fewer nails per shingle
• Additional adhesive strips
• Roof deck removal
• Use of metal shingles
• Additional adhesive strips

Rationale: High-wind areas require extra sealing or fasteners to prevent

shingles from blowing off.

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