DIY Project:
How to Build a Block Column

TOOL LIST:

  • Hand tamper
  • Level
  • Rubber mallet
  • Tape measure
  • Caulk gun
  • Spade shovel
  • Stiff metal rake (for leveling gravel)
  • Yard stick or 2×4 board (for screeding sand)

MATERIALS LIST:

  • Wall blocks (quantity depends on height, will need 4 rectangular blocks per layer)
  • 20″ wall cap (if desired) or 6 additional wall blocks for cap
  • Crushed gravel
  • Bedding sand
  • Masonry adhesive

STEP 1: Prepare Base

  • Remove 6 inches of top soil (approximately 2’x2′ section)
  • Fill with 5 inches gravel, level with a rake and compact with a hand tamper
  • Top with 1 inch of sand, screed to level

STEP 2: Column Construction

  • Lay base blocks
  • Apply a layer of adhesive
  • Lay next layer of blocks and adjust placement with a rubber mallet, as needed
  • Apply a layer of adhesive
  • NOTE: Use a staggered pattern to increase column strength (see video)

STEP 3: Add Layers

  • Repeat STEP 2 until you reach desired height (maximum height 42 inches)
  • Add final layer of adhesive to the top of the stack

STEP 4: Column Cap

  • Option1: Position 6 blocks horizontally as a cap
  • Option 2: Top with a single 20″ square wall cap