CCI Roofing & Weatherproofing Standards 2

Question 1

What is the minimum required headlap for standard three-tab asphalt shingles installed on a 4:12 slope per NRCA guidelines?

Accepted Answer

2 inches

Answer

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?

Accepted Answer

Reinforcing felts or ply sheets

Answer

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?

Accepted Answer

6 inches

Answer

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?

Accepted Answer

FM 1-60 or higher

Answer

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?

Accepted Answer

Step flashing

Answer

Step flashing consists of individual L-shaped metal pieces interwoven with shingles at the roof-to-wall junction to channel water away.

(CCI) Certified Construction Inspector Practice Test