GAF Roofing Materials & Installation Techniques 3

Question 1

What is the primary function of ice and water shield (self-adhering membrane) at roof eaves?

Accepted Answer

To protect against ice dam water infiltration

Answer

Ice and water shield creates a watertight seal at eaves and other vulnerable areas to prevent water from ice dams from penetrating under shingles and into the structure.

Question 2

Which method is correct for installing step flashing at a sidewall intersection?

Accepted Answer

Individual L-shaped pieces woven with each shingle course

Answer

Step flashing uses individual L-shaped pieces installed with each course of shingles to create a series of overlapping barriers that prevent water intrusion at sidewalls.

Question 3

What minimum roof slope is required for standard asphalt shingles without special low-slope modifications?

Accepted Answer

3:12

Answer

Standard asphalt shingles require a minimum slope of 3:12; below this pitch, low-slope modified installation methods with additional underlayment are required.

Question 4

When installing ridge cap shingles, what is the correct direction relative to prevailing winds?

Accepted Answer

Into the wind so nails are protected

Answer

Ridge cap shingles are installed starting from the end opposite the prevailing wind so that the exposed laps face away from driving rain, reducing the chance of wind-driven water infiltration.

Question 5

What is the purpose of a cricket or saddle on a roofing system?

Accepted Answer

To divert water around wide chimneys or vertical walls

Answer

A cricket is a small peaked structure installed on the high side of a chimney or other projection to divert water around it and prevent pooling.

(GAF) GAF Certified Roofing Contractors Practice Test

(GAF) GAF Certified Roofing Contractors Practice Test

GAF Roofing Materials & Installation Techniques 3