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Laying the Full Mortar Bed and Setting the Corner

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What happens here

After preparing the footing, apply a full bed of mortar. This involves spreading a thick, even layer of mortar along the top of the footing where the block will sit. Then, set the corner block, ensuring it aligns correctly with the rebar. Use a level to check for plumb (vertical straightness) and level (horizontal flatness). The presenter demonstrates tapping the high side of the block with a trowel to gently settle it into the mortar, ensuring a uniform 3/8-inch joint. This meticulous process ensures the block is perfectly positioned and has full contact with the mortar.

Goal: Securely lay the corner block onto a full mortar bed, ensuring it is level and plumb.

Tools and materials

  • Concrete Block — The corner unit of the wall
  • Level — Checking horizontal and vertical alignment
  • Mortar — Bonding blocks
  • Rebar — Guiding block placement and future reinforcement
  • Trowel — Spreading mortar and tapping blocks