Apply block head joints.

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 Links to an external site. and 6 Links to an external site. 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?