How to Build a Glass Block Wall

By Gene and Katie Hamilton

Tools Required
  • Screwdriver
  • Carpenter's level
  • Drill and bits
  • Tape measure
  • Trowel
Materials Required
  • Glass block kit
  • Bucket
  • Masking tape
  • Paintbrush
  • Rubber gloves
  • Silicone sealant
  • Mortar or plaster mix
  • Mineral spirits

Before You Begin

These are general instructions to install a glass block shower wall. The process is similar for any type of glass block wall. Follow the instructions to lay out the blocks and become familiar with the materials in the kit and how they're used.

Looking for a Bathroom Contractor to do the job? Click Home Advisor, a free referral service that connects homeowners with local prescreened contractors.

  • Step 1 : Begin with the first layer

    Begin with the first layer

    While the primer is still sticky, apply a bed of glass-block mortar to the curb with a small trowel. The metal panel anchors hold the glass block to the wall and floor.

  • Step 2 : Install the expansion strip and blocks

    Place the foam expansion strip between the first block and the shower wall. Then put the smaller block against the shower wall and use the trowel handle to tap it down into the mortar. Next to the block against the wall begin laying the larger blocks, placing the panel anchors between the vertical mortar joints. This combination of blocks gives the proper spacing so the end of the wall aligns wit the end of the curb molded in the shower pan. Check that each block is plumb with the level. Use spacers between the blocks to ensure consistent, evenly spaced mortar joints.

  • Step 3 : For a curved section use reinforcing

    Install reinforcing in the last vertical joint of a straight section just before starting a curved section. Form the curved section of the shower by laying four consecutive curved glass blocks using spacers. For a finished look put an end block which has a rounded corner at the end of the walls.

    Page 1 of 2
    Go To Page 2