A roofing contractor installs products and repairs surfaces that seal, waterproof and weatherproof structures. This work is performed to prevent water or its derivatives, compounds or solids from penetrating such protection and gaining access to material or space beyond. In the course of this work, the contractor examines and/or prepares surfaces and uses the following material: asphaltum, pitch, tar, felt, glass fabric, urethane foam, metal roofing systems, flax, shakes, shingles, roof tile, slate or any other roofing, waterproofing, weatherproofing or membrane material(s) or a combination thereof.
Authority cited: Sections 7008 and 7059, Reference: Sections 7058 and 7059 (Business and Professions Code)
Content of the Examination
The Roofing (C-39) Examination is divided into five major sections. These sections are:
1. Roofing Job Evaluation (30%)
Roof-covering selection
Roofing plans and specifications
Roofing components, materials & measurements
Roofing calculations
2. Job Site and Deck Preparation (16%)
Roofing preparation management
Roof removals
Deck corrections
3. Low-Slope Roof Installations (16%)
Equipment, set-up, maintenance & procedures
Deck preparations and insulation
Built-up applications
Single-ply and fluid applied applications
4. Steep-Slope Roof Installations (24%)
Metals, penetrations, ventilation and insulation
Composition shingle coverings
Tile coverings
Wood and synthetic shake installations
Metal panel installations
5. Roof Installation Safety (14%)
Cal/OSHA administrative requirements
Fall protection and roof safety
Tool, equipment and material safety
*Percentages are approximate*
Sample Questions
The following questions are typical of the types of items that are on the examination. The correct answer is highlighted.
1. How many inches must roof valley flashing overlap?
1-1/2”
2”
3”
4”
2. What is the purpose of cant strips?
To protect edge metal
To secure steel fasteners
To eliminate sharp angles
To apply cold adhesives
3. If a flat rectangular roof measures 16’ x 31’, how many squares of roof covering is required?
5
15
25
50
*All questions are written and reviewed by licensed contractors who are actively working in the field*
Resources
Cal/OSHA State of California Construction Safety Orders.
