Install valley flashing.

Installation should include

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

Process/Skill Questions:

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

NCCER Carpentry Standards

Level Two, Module Five (27202-13): Roofing Applications

Module Five (27202-13) describes how to properly prepare the roof deck and install roofing for residential and commercial buildings.