Title: Install asphalt roof shingles in a valley.
Course: Carpentry III (17003-III) > Section: Installing Roofing

Installation should include

- following the shingle manufacturer specifications
- ensuring that the shingle line is straight, even, and parallel to the valley
- nailing shingles, according to specifications, without nailing the flashing.

Process/Skill Questions:

- What are two common methods of installing asphalt roof shingles in a valley?
- What is the purpose of underlayment in a valley?

NCCER Carpentry
Adv. Carpentry, Module 27202: Roofing Applications

Covers residential and commercial roofing materials and structures and describes the procedures for installing commercial roofing such as lap seam, standing seam, and built-up roofs.