How to build a block wall
Follow these expert tips on how to build a block wall .
Step 1
Ensure solid footing. Footings should be a minimum of twice the width of the concrete block (i.e., a typical 8 x 8 x 16 block would require a 16-inch wide footing) and extend below the frost line. Check local building codes for construction requirements in your area.
Step 2
Lay out the block, making sure to leave a 3/8 inch gap between the blocks to allow for the vertical mortar joints (i.e., a typical 8 x 8 x 16 block is actually 15-5/8 inches long and 7-5/8 inches high to accommodate the mortar joint).
Step 3
Snap a chalk line on each side of the block wall as a reference line.
Step 4
Mix the mortar. QUIKRETE pre-blended Mason Mix Type S is recommended because it achieves the high bond strengths required for a successful project. QUIKRETE Mason Mix Type S is a contractor grade mortar mix designed for laying brick, concrete masonry units and stone. Mason Mix is a pre-blended, sanded product that can be used for both structural and non-structural applications.
Step 5
Dampen the footing surface with water and place a 1-inch bed of mortar on the footing. Furrow the mortar bed using the tip of the trowel to create a “v” to help distribute the mortar evenly. The mortar should be workable but firm enough to support the weight of the block.
Paso 6
Butter the inside end of the first block and then press the block into the mortar bed to create a 3/8 inch mortar joint.
Step 7
Trim and remove any excess mortar.
Step 8
Using the same process, set the opposite corner block.
Step 9
Repeat steps 6 and 7, adjusting the blocks to be flush and level. Continue this process until the first course is completed.
Step 10
To set the next course of block, apply a 1-inch thick mortar bed along the top of the first course.
Step 11
At the end of the wall, set an 8 x 8 x 16 half block into the mortar bed with the smooth side facing out.
Step 12
Using a mason’s line as a guide for the remaining block, continue building the wall until it is complete.
Step 13
Once the mortar joints have become “thumbprint” hard, use a jointing tool to smooth the fresh joints and remove any excess mortar.
For more information on how to build a block wall , visit www.quikrete.com.
