A starter course for sidewall shingles and shakes is a ____ layer used for single-course applications.
A) single
B) double
C) triple
D) quadruple

Question

Quizplus · Accepted Answer

A double layer is the standard starter course for sidewall shingles and shakes in a single-course application. It provides enough thickness and strength to support the shingles or shakes as they are installed. A single layer may not be enough for proper support, while a triple or quadruple layer may be unnecessary and increase material and labor costs.

A Starter Course for Sidewall Shingles and Shakes Is a ____