ICC G15 Shingle Roofing Exam (2018 IBC/IRC) Practice Exam
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- 60 questions (same as real exam)
- 150 minute time limit
- 4 topic areas covered
- 241 questions in pool
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ICC G15 Shingle Roofing (2018 IBC/IRC) Practice Exam Guide
What's on the exam
Questions per topic, out of 60This practice exam is laid out like the official content outline for the ICC G15 Shingle Roofing (2018 IBC/IRC) exam: Job Planning and Setup, Types of Roofing Material and Application, Fasteners, Flashings, Scuppers, Etc., Re-roofing.
Two ways to practice: the free practice exam gives you 10 questions per attempt, as often as you want. The full practice exam gives you 60 questions on a 150 minutes clock, with a new draw from our question bank every time.
Job Planning and Setup 11 items
Our study plan for this topic: Permits, inspections and code applicability for roofing work; Roofing definitions (roof covering, roof deck, underlayment, reroofing, recover); Roof deck requirements and weather protection; Minimum roof slope by steep-slope covering; Fire classification of roof coverings; Wind resistance and high-wind requirements for shingles and tile; Underlayment selection by slope and wind speed; Ice barrier requirements.
Types of Roofing Material and Application 14 items
Our study plan for this topic: Asphalt shingles: slope, underlayment, fastening and application; Wood shingles: slope, exposure, spacing and application; Wood shakes: slope, interlayment, exposure and application; Slate shingles: slope, headlap and application; Clay and concrete tile: slope, underlayment, attachment; Metal roof shingles and metal roof panels: slope and attachment; Material standards and labeling for steep-slope coverings.
Fasteners, Flashings, Scuppers, Etc. 19 items
Our study plan for this topic: Fastener type, length and deck penetration by covering; Fastener count per shingle and high-wind fastening; Valley linings and valley flashing; Drip edge; Step, sidewall and kickout flashing; Chimney and penetration flashing, crickets and saddles; Roof drainage, gutters and scuppers; Ice barrier at eaves.
Re-roofing 16 items
Our study plan for this topic: Roof recover vs roof replacement; Conditions prohibiting roof recover (layers, water-soaked, slate/tile); Reinstallation of existing materials (slate, tile, flashings); Flashing replacement during reroofing; Structural and load considerations when reroofing; Repairing roof-ceiling framing and deck before reroofing.
Sample 1 — Fasteners, Flashings, Scuppers, Etc.
Question: Wood shingles are being installed on a dwelling whose roof sheathing is 3/8 inch thick. What is the minimum fastening required?
- A. Three fasteners per shingle, extending through the sheathing
- B. Two fasteners per shingle, penetrating 1/2 inch into the sheathing
- C. Two fasteners per shingle, extending through the sheathing
- D. One fastener per shingle, penetrating 3/4 inch into the sheathing
Correct Answer: C
IBC 1507.8.6 requires each wood shingle to be attached with not fewer than two fasteners, with a minimum penetration of 3/4 inch into the sheathing; where the sheathing is less than 1/2 inch thick, the fasteners must extend through the sheathing. With 3/8-inch sheathing, two fasteners extending through the sheathing are required.
Reference: IBC 2018 Section 1507.8.6
Sample 2 — Re-roofing
Question: You are performing a full roof replacement on an existing commercial building, which requires removal of the existing layers of roof covering down to the roof deck. Which existing component is permitted to remain in place on the deck and be covered by a new layer of the same material?
- A. Self-adhered valley underlayment
- B. Mechanically attached base sheet
- C. Adhered ice barrier membrane
- D. Fully adhered rigid insulation
Correct Answer: C
Per the exception to IBC Section 1511.3, where the existing roof assembly includes an ice barrier membrane that is adhered to the roof deck, that existing ice barrier membrane is permitted to remain in place and be covered with an additional layer of ice barrier membrane in accordance with Section 1507. No similar allowance exists for base sheets, insulation or other underlayments — those must come off with the rest of the assembly down to the deck.
Reference: IBC 2018 Section 1511.3 Roof replacement (exception)
Sample 3 — Types of Roofing Material and Application
Question: Asphalt shingles must be tested for wind resistance and their packaging labeled to show the resulting classification. Which test standard is the primary required method for determining asphalt shingle wind resistance?
- A. ASTM D7158
- B. ASTM D4869
- C. ASTM D1970
- D. ASTM D3462
Correct Answer: A
IBC 1504.1.1 requires asphalt shingles to be tested in accordance with ASTM D7158 and to meet the classification requirements of Table 1504.1.1, with packaging labeled accordingly. Shingles not within the scope of D7158 are tested to ASTM D3161 (exception). ASTM D3462 is the shingle material standard (1507.2.4), D4869 is an underlayment standard, and D1970 is self-adhering polymer modified bitumen.
Reference: IBC 2018 Page 342
Your first attempt is an inspection, not a final grade. The results page breaks your score down by outline topic, so you can see which areas need work. Compare it with the real exam's passing score, a minimum score of 70, and keep practicing until you pass consistently.
- Answer what you know first and bookmark the rest. Our practice exams let you bookmark and come back.
- Work your bookmarks on the second pass.
- Keep your pace. The real exam works out to about 2 minutes 30 seconds per question.
- After each attempt, look up each missed question's reference in your book and read the section.
| Questions | 60 questions |
| Time limit | 150 minutes |
| Passing score | a minimum score of 70 |
| Books in the exam room | Open book |
| Exam fee | $120 |
- Results for examinations taken electronically are available immediately after the examination is completed.
- You must wait 10 days before retaking a failed exam.
Source: National Contractor/Trades Examination Information Bulletin, PUBLISHED June 30, 2026. Check the bulletin before test day: fees and rules can change.