CCI Roofing & Weatherproofing Standards 2 — Questions and Answers
Question 1: What is the minimum required headlap for standard three-tab asphalt shingles installed on a 4:12 slope per NRCA guidelines?
- 1 inch
- 2 inches (Correct answer)
- 3 inches
- 4 inches
Correct answer: 2 inches
NRCA guidelines require a minimum 2-inch headlap for standard three-tab asphalt shingles on slopes of 4:12 and greater.
Question 2: A built-up roofing (BUR) system uses alternating layers of bitumen and what other material?
- Polyurethane foam
- Reinforcing felts or ply sheets (Correct answer)
- Rigid insulation boards
- Modified bitumen membrane
Correct answer: Reinforcing felts or ply sheets
BUR systems consist of alternating layers of bitumen (asphalt or coal tar) and reinforcing felts or ply sheets to create a monolithic membrane.
Question 3: When inspecting a metal roof, what minimum clearance should be maintained between the bottom edge of metal roofing panels and the finished grade?
- 2 inches
- 4 inches
- 6 inches (Correct answer)
- 8 inches
Correct answer: 6 inches
Metal roofing panels should maintain a minimum 6-inch clearance from finished grade to prevent corrosion from soil contact and moisture wicking.
Question 4: Under IBC requirements, what is the wind uplift rating category that roofing materials in a hurricane-prone region must typically meet?
- Class A
- FM 1-60 or higher (Correct answer)
- UL 580 Class 30
- ASTM D3161 Class F
Correct answer: FM 1-60 or higher
FM Global's FM 1-60 or higher wind uplift classification is commonly required for roofing assemblies in hurricane-prone regions.
Question 5: What type of flashing is installed at the junction where a roof deck meets a vertical wall to prevent water infiltration?
- Valley flashing
- Step flashing (Correct answer)
- Counter flashing
- Apron flashing
Correct answer: Step flashing
Step flashing consists of individual L-shaped metal pieces interwoven with shingles at the roof-to-wall junction to channel water away.
Question 6: According to ASTM standards, what does a Class A fire rating for roofing materials indicate?
- Effective against light fire exposure only
- Effective against severe fire exposure (Correct answer)
- Effective against moderate fire exposure
- No fire resistance required
Correct answer: Effective against severe fire exposure
ASTM E108 Class A indicates the roofing material is effective against severe fire exposure, offering the highest level of fire protection.
Question 7: What is the primary purpose of a cricket or saddle installed behind a chimney on a sloped roof?
- To provide ventilation for the chimney
- To divert water around the chimney and prevent pooling (Correct answer)
- To anchor the chimney flashing
- To insulate the chimney from roofing materials
Correct answer: To divert water around the chimney and prevent pooling
A cricket or saddle is a peaked construction behind a chimney that diverts water to either side, preventing it from pooling and causing leaks.
CCI Roofing & Weatherproofing Standards 2
What is the minimum required headlap for standard three-tab asphalt shingles installed on a 4:12 slope per NRCA guidelines?