Title: Install valley flashing.
Course: Carpentry III (17003-III) > Section: Installing Roofing

Installation should include

- following blueprints
- keeping installation flush to the surface
- avoiding nail holes
- ensuring the surface is smooth.

Process/Skill Questions:

- What problem(s) can nail holes in flashing cause?

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.