Title: Install roof underlayment.
Course: Building Trades II (17009-II) > Section: CARPENTRY: Installing Roofing

Installation should include

- tightening the underlayment with 2-inch horizontal overlaps
- emphasizing the importance of ice and water shields
- fastening according to code.

IRC: Chapter 9 covers all types of roof underlayment approved for use under the building code. Table R905.1.1 (1) identifies underlayments, while Table R905 explains the use of different roof coverings.

Process/Skill Questions:

- What purpose does roof felt serve?
- What are the problems associated with improperly installed felt?