Title: Apply block head joints.
Course: Building Trades I (17009-I) > Section: MASONRY: Laying Concrete Masonry Units

Application of mortar should include

- spreading it on both sides of one end of the block
- maintaining a uniform thickness to form a 3/8-inch head joint.

IRC: Chapters 4 and 6 explain how to ensure mortar strength and joint applications comply with building codes, as related to various masonry products.

Process/Skill Questions:

- What is a head joint, and what function does it serve?
- How wide should a head joint be?