100+ Free NRCA ProCertified Asphalt Shingle Installer Practice Questions

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Question 1

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What is the minimum thickness of OSB decking required by NRCA and IRC for steep-slope asphalt shingle applications?

7/16-inch span-rated OSB

3/8-inch OSB

1/2-inch OSB

5/8-inch OSB

to track

2026 Statistics

Key Facts: NRCA ProCertified Asphalt Shingle Installer Exam

70%

Passing Score

NRCA

$175

Exam Fee

NRCA

4:12

Minimum Slope (Standard)

IRC R905.2

6 nails

High-Wind Fastening

NRCA / manufacturers

6 ft

OSHA Fall Protection Trigger

OSHA Subpart M

100 Qs

Practice Questions

OpenExamPrep

The NRCA ProCertified Asphalt Shingle Installer exam tests knowledge of NRCA Roofing Manual: Steep-Slope Roof Systems specifications for asphalt shingle installation. Topics include OSB deck prep (7/16-inch span-rated minimum), underlayment standards (ASTM D226 Type II, ASTM D1970 ice and water shield), drip edge sequencing, starter strips, nail zone placement (low-nailing vs. high-nailing), 4-nail vs. 6-nail high-wind patterns, shingle exposure and offset (5–6 inch), valley types (open metal, closed-cut, woven), step/counter flashing, hip and ridge caps, ridge ventilation (IRC R806 1:150 and 1:300 ratios), cold-weather and hot-weather handling, tear-off vs. reroof procedures, and OSHA 1926 Subpart M fall protection requirements for residential roofing. The exam is administered by Prometric and requires a 70% passing score.

Sample NRCA ProCertified Asphalt Shingle Installer Practice Questions

Try these sample questions to test your NRCA ProCertified Asphalt Shingle Installer exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the minimum thickness of OSB decking required by NRCA and IRC for steep-slope asphalt shingle applications?

A.7/16-inch span-rated OSB

B.3/8-inch OSB

C.1/2-inch OSB

D.5/8-inch OSB

Explanation: NRCA's Roofing Manual: Steep-Slope Roof Systems specifies 7/16-inch span-rated OSB as the minimum decking thickness for asphalt shingle applications. The span-rated designation ensures the panel is engineered for the specific rafter spacing (typically 24 in. o.c. maximum). Thinner 3/8-inch panels lack the nail-holding capacity and structural rigidity required for proper shingle fastening.

2Which underlayment standard specifies the requirements for Type II (heavyweight #30) felt used beneath asphalt shingles?

A.ASTM D226 Type II

B.ASTM D1970

C.ASTM D4869

D.ASTM D6757

Explanation: ASTM D226 Standard Specification for Asphalt-Saturated Organic Felt covers both Type I (lightweight #15) and Type II (heavyweight #30) felt underlayments. Type II #30 felt is NRCA's preferred traditional underlayment for steep-slope asphalt shingle applications due to its greater weight and tear resistance.

3According to ASTM D1970, self-adhering polymer-modified bituminous sheet (ice and water shield) must be applied at which locations on a steep-slope roof?

A.Eaves, valleys, and all penetrations in cold climates

B.Only at ridge vents and hip caps

C.Entire deck surface in all climates

D.Only on north-facing slopes

Explanation: ASTM D1970 self-adhering ice and water shield is required at eave edges (to guard against ice dam water infiltration), valleys (high-water-concentration areas), and around penetrations such as pipe boots and skylights. IRC R905.2.7 mandates it at eaves in areas subject to ice damming, extending 24 inches inside the exterior wall line.

4Drip edge should be installed at the eave in what sequence relative to the underlayment?

A.Drip edge first (under the underlayment) at the eave

B.Underlayment first, then drip edge over it at the eave

C.Drip edge installed over underlayment at both eave and rake

D.Drip edge is not required at the eave, only at the rake

Explanation: At the eave, drip edge is installed on the bare deck before underlayment is applied, so the underlayment laps over the top of the drip edge. This directs water running off the underlayment into the drip edge flange and into the gutter. At the rake (gable), the sequence is reversed: underlayment goes down first, then drip edge is applied on top to shed water away from the fascia.

5What is the primary purpose of a starter strip course at the eave of an asphalt shingle roof?

A.To seal the eave edge and provide backing for the first course of shingles

B.To add a decorative border along the fascia

C.To increase the total thickness at the ridge

D.To replace the drip edge at the eave

Explanation: The starter strip covers the joints between the first course of shingles and the deck, preventing wind-driven rain from entering through those butt joints. It also provides the adhesive sealant strip directly at the eave, sealing the bottom of the first course of shingles, which is critical for wind resistance. Without a starter, the eave edge is vulnerable to blow-off and water infiltration.

6When installing a 3-tab asphalt shingle in standard conditions, where should the nails be placed according to NRCA nailing zone guidelines?

A.In the nail zone just above the adhesive strip, below the top of the cut-out slots

B.Along the top edge of the shingle to minimize splitting

C.1 inch above the butt edge for maximum holding power

D.Through the adhesive strip to seal the nail heads

Explanation: NRCA and manufacturers specify nails must be placed in the nail zone — a defined band typically 5/8 inch above the cut-out slots on 3-tab shingles and just above the adhesive strip on laminated shingles. This placement ensures nails penetrate both the shingle and the head lap of the underlying course, maximizing deck penetration and wind resistance without exposing nails to weather.

7What is the key difference between 'low-nailing' and 'high-nailing' on laminated asphalt shingles?

A.Low-nailing places fasteners in the manufacturer's nail zone for optimal wind resistance; high-nailing places fasteners above the nail zone, reducing wind uplift resistance

B.Low-nailing is used on low-slope roofs; high-nailing is used on steep-slope roofs

C.High-nailing penetrates more shingle layers and is preferred by NRCA

D.Low-nailing is a defective installation that voids manufacturer warranties

Explanation: Low-nailing (correct placement in the nail zone just above the adhesive sealant strip) secures two shingle courses with each nail — the course being installed and the head lap of the course below — providing maximum wind resistance. High-nailing (above the nail zone, near the top of the shingle) only secures one shingle layer and significantly reduces the wind uplift rating, often voiding manufacturer warranties.

8In a high-wind zone (130+ mph design speed), how many nails per shingle does NRCA recommend for standard laminated asphalt shingles?

A.6 nails per shingle

B.4 nails per shingle

C.2 nails per shingle

D.8 nails per shingle

Explanation: For high-wind zones (ASCE 7 design wind speeds of 130 mph or higher), NRCA and most laminated shingle manufacturers recommend 6 nails per shingle instead of the standard 4. The additional fasteners significantly improve wind uplift resistance. Many Miami-Dade approved products also specify 6-nail patterns. Always follow the specific product's wind warranty requirements for the design wind speed of the project.

9What is the standard exposure for a 3-tab asphalt shingle with a 36-inch-long tab section?

A.5 inches

B.6 inches

C.4 inches

D.7 inches

Explanation: Standard 3-tab shingles are 12 inches tall with a 2-inch head lap, leaving exactly 5 inches of exposure per course. The 36-inch width with 3 equal 12-inch tabs means each course steps up 5 inches. This 5-inch exposure gives a triple-layer overlap at the butt edge and is the designed exposure for standard 3-tab shingles.

10The minimum offset (horizontal stagger) between vertical joints in adjacent courses of asphalt shingles should be at least:

A.5 to 6 inches

B.1 to 2 inches

C.12 inches

D.Equal to one full tab width (12 inches for 3-tab)

Explanation: NRCA recommends a minimum 5- to 6-inch offset between vertical (butt) joints in adjacent courses. This stagger prevents water tracking down through aligned joints in multiple courses. An insufficient offset of only 1-2 inches creates near-aligned joints that can allow water infiltration. A full 12-inch stagger is more than required and creates installation complexity without additional benefit.

About the NRCA ProCertified Asphalt Shingle Installer Exam

The NRCA ProCertified Asphalt Shingle Installer exam validates mastery of steep-slope roofing fundamentals — from deck preparation and underlayment selection to flashing, fastening, ventilation, and OSHA fall protection. Pass on your first attempt with targeted practice.

Questions

100 scored questions

Time Limit

Computer-based at Prometric testing centers

Passing Score

70%

Exam Fee

$175 (NRCA / Prometric)

NRCA ProCertified Asphalt Shingle Installer Exam Content Outline

25%

Deck Preparation & Material Handling

OSB deck requirements (7/16-inch span-rated), panel fastening, deck inspection during tear-off, moisture damage assessment, bundle staging, cold- and hot-weather handling, waste estimation, and units of measure

20%

Underlayment Systems

ASTM D226 Type II (#30 felt), synthetic underlayment standards, ASTM D1970 self-adhering ice and water shield, eave and valley protection zones, IRC R905.2.7 ice-dam requirements, head lap and end lap minimums

20%

Shingle Layout & Fastening

Minimum slope (4:12 standard, 2:12 low-slope), exposure and head lap, 5–6 inch joint offset, nail zone (low-nailing vs. high-nailing), 4-nail vs. 6-nail high-wind pattern, fastener type (ASTM A153 galvanized), nail penetration (3/4-inch min), pneumatic nailer depth setting, IRC R905.2

15%

Flashing & Water Management

Drip edge installation sequence (eave vs. rake), starter strip function and orientation, step flashing dimensions, counterflashing and reglet sealing, pipe boot integration, kick-out flashing, skylight flashing, chimney cricket (IRC R903.2.2), roofing cement limitations

10%

Valley Types & Hip/Ridge

Open metal valley (crimp, nailing exclusion zone, channel width taper), closed-cut valley (2-inch setback, trim sequence), woven valley limitations with laminated shingles, hip cap installation direction, ridge cap nailing, pre-manufactured vs. field-cut caps

Ridge Ventilation

IRC R806 net free area ratios (1:150 and 1:300), balanced soffit-to-ridge airflow, baffled ridge vent function, short-circuit prevention, ridge vent slot cutting, NFA verification on replacement projects

Tear-Off, Reroof & Quality

Tear-off vs. overlay distinctions, two-layer maximum code limit, cupped shingle remediation, overlay nail length requirements, granule loss assessment, pre-installation inspection, workmanlike quality standard

OSHA Safety & Fall Protection

OSHA 1926 Subpart M (6-foot residential trigger), PFAS requirements (5,000 lb anchor, 6-ft max free fall), ladder safety (4:1 angle, 3-ft extension), falling object protection, competent person responsibilities, heat illness prevention (water/rest/shade), HazCom/SDS requirements

Product Standards & Warranty

High-nailing as warranty void condition, manufacturer wind warranties, Class A fire rating (ASTM E108/UL 790), impact resistance Class 4 (UL 2218), ASTM D3161 Class F wind test, algae-resistance copper granules, thermal splitting, sealant activation and shake test

How to Pass the NRCA ProCertified Asphalt Shingle Installer Exam

What You Need to Know

Passing score: 70%
Exam length: 100 questions
Time limit: Computer-based at Prometric testing centers
Exam fee: $175

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

NRCA ProCertified Asphalt Shingle Installer Study Tips from Top Performers

1Master the nail zone: know why low-nailing is correct and how high-nailing reduces wind resistance and voids warranties

2Memorize the ASTM standards: D226 Type II (felt), D1970 (ice and water shield), D3161 Class F (wind test), E108/UL 790 (fire rating), UL 2218 (impact resistance)

3Know the IRC code sections: R905.2 (asphalt shingles), R806 (ventilation), R806.2 (1:150 vs 1:300 rule), R903.2.2 (chimney cricket >30 inches)

4Understand drip edge sequence: at the eave, drip edge goes UNDER the underlayment; at the rake, drip edge goes OVER the underlayment

5Know your valley types: open metal (3-inch channel, tapered, 6-inch nail exclusion zone), closed-cut (2-inch setback, trim sequence), woven (not recommended for laminated shingles)

6OSHA Subpart M: 6-foot trigger, PFAS anchor = 5,000 lbs, free fall ≤ 6 feet, ladder = 4:1 angle + 3-foot extension above roof

Frequently Asked Questions

What is the NRCA ProCertified Asphalt Shingle Installer exam?

The NRCA ProCertified Asphalt Shingle Installer is a knowledge-based certification exam administered by the National Roofing Contractors Association (NRCA) through Prometric testing centers. It validates that a roofer understands proper asphalt shingle installation methods per NRCA's Roofing Manual: Steep-Slope Roof Systems, including deck prep, underlayment, flashing, fastening, ventilation, and OSHA safety requirements. A passing score of 70% is required.

How many questions are on the NRCA ProCertified Asphalt Shingle exam?

The NRCA ProCertified Asphalt Shingle Installer exam is a computer-based test administered at Prometric centers. The exam covers NRCA Roofing Manual specifications for asphalt shingle systems. Our 100 practice questions are distributed across all major content areas — deck preparation, underlayment, shingle layout, fastening, flashing, valleys, ridge ventilation, and OSHA fall protection — to prepare you for the full range of topics tested.

What topics are on the NRCA ProCertified Asphalt Shingle exam?

The exam covers: deck preparation (OSB thickness, nail holding capacity, moisture assessment); underlayment (ASTM D226 Type II felt, synthetic equivalents, ASTM D1970 ice and water shield, eave and valley protection); shingle layout (minimum slope 4:12, exposure, head lap, 5–6 inch joint offset); fastening (nail zone, low vs. high nailing, 4 vs. 6 nails per shingle, fastener type and penetration); flashing (drip edge, step flashing, counterflashing, valley types, chimney flashings, kick-out); ridge ventilation (IRC R806, 1:150 and 1:300 ratios, baffled ridge vents); and OSHA 1926 Subpart M fall protection for residential roofing.

How much does the NRCA ProCertified Asphalt Shingle exam cost?

The NRCA ProCertified Asphalt Shingle Installer exam fee is approximately $175. NRCA members may receive preferred pricing. The exam is administered at Prometric testing centers nationwide. Contact NRCA directly at nrca.net for the most current registration and pricing information.

What is the passing score for the NRCA ProCertified exam?

A minimum score of 70% is required to pass the NRCA ProCertified Asphalt Shingle Installer exam. With our 100 practice questions covering all content domains, aim for consistent 80%+ scores before scheduling your exam to ensure a comfortable margin above the passing threshold.

What is the difference between low-nailing and high-nailing on asphalt shingles?

Low-nailing (correct placement in the manufacturer's nail zone, just above the adhesive sealant strip) secures two shingle layers with each nail — the course being installed and the head lap of the course below — providing maximum wind resistance. High-nailing (above the nail zone) only secures one shingle layer and significantly reduces wind uplift resistance, voiding most manufacturer wind warranties. This is one of the most commonly tested concepts on the NRCA ProCertified exam.

Does the NRCA ProCertified exam cover OSHA safety?

Yes. OSHA 29 CFR 1926 Subpart M fall protection requirements for residential roofing are covered on the NRCA ProCertified exam. Key topics include: the 6-foot residential fall protection trigger, personal fall arrest systems (PFAS) with 5,000 lb anchors and 6-foot maximum free fall, the 4:1 ladder angle rule with 3-foot extension above the landing, falling object protection (toeboards), competent person responsibilities, heat illness prevention (water/rest/shade), and HazCom/SDS requirements.