GAF Risk Assessment & Mitigation 3

Question 1

A roofing project scope includes removing a suspected asbestos-containing felt underlayment installed before 1980. What is the required risk mitigation step?

Accepted Answer

Hire an accredited asbestos abatement contractor and follow EPA/NESHAP regulations

Answer

EPA NESHAP regulations require an accredited abatement contractor for asbestos-containing roofing materials, including proper sampling, notification, and disposal procedures.

Question 2

When evaluating hail risk for a completed GAF installation, which factor most determines the impact resistance class specified in the installation?

Accepted Answer

Hail frequency and stone size data from regional climate studies

Answer

Impact resistance class (Class 1–4 per UL 2218 or FM 4473) is selected based on regional hail frequency and maximum expected hail stone size from historical climate data.

Question 3

A GAF certified installer identifies that roof valleys have inadequate open-valley flashing width for the project's high-rainfall climate. The BEST corrective action is to:

Accepted Answer

Increase open-valley metal width to a minimum of 6 inches each side per manufacturer specs

Answer

In high-rainfall areas, GAF and code standards require wider open valleys (minimum 6 inches each side) to handle higher water volumes and prevent backflow under shingles.

Question 4

Which type of insurance coverage specifically protects a roofing contractor against claims arising from completed work that causes damage after project completion?

Accepted Answer

Completed operations liability insurance

Answer

Completed operations coverage under a commercial general liability (CGL) policy protects contractors against claims for property damage or injury caused by their work after project completion.

Question 5

When performing a structural risk assessment before reroofing, which sign most indicates potential hidden rafter or truss damage?

Accepted Answer

Visible sagging or waviness in the roof plane

Answer

Sagging or waviness in the roof plane indicates compromised structural members (broken rafters, crushed trusses, or rotted decking) that must be repaired before new roofing is applied.

(GAF) GAF Certified Roofing Contractors Practice Test

(GAF) GAF Certified Roofing Contractors Practice Test

GAF Risk Assessment & Mitigation 3