Title: Install subfloor sheathing.
Course: Carpentry II (17003-II) > Section: Framing a Floor

Installation should include

- following the manufacturer instructions for expansion
- ensuring that the subfloor is properly nailed, with joints staggered
- orientation of the sheathing with the long dimension laid perpendicular to the framing.

Process/Skill Questions:

- What factors should be considered when determining the type of sheathing to use?
- What methods should be used to reduce the number of structural problems?
- What are the consequences of improper installation of sheathing?

NCCER Carpentry Standards

Level One, Module Five (27105-13): Floor Systems

Module Five (27105-13) describes the layout and construction procedures for floor systems, including how to read and interpret construction drawings and specifications, and how to identify different types of framing systems, floor system components, and floor system materials. It also covers how to estimate the amount of materials needed for a floor assembly and on some common alternative floor systems.