Repairing Hairline Cracks on a Terrazzo Shower Base


Used for decorative floor patterns and shower flooring, terrazzo is a unique substance generally consisting of pieces of ground or chipped materials such as marble, granite or glass mixed with a cement binder. The mixture is poured like concrete into graphs that set the boundaries for the flooring or fixture. After hardening, the terrazzo mixture is smoothed and polished for a sleek, glossy finish. Terrazzo shower bases are usually only a few inches thick, which sometimes crack due to foundation movement. Hairline cracks in terrazzo are similar to those found in cement and can be fixed at home.

Things You'll Need

  • Vacuum
  • Gloves
  • Safety glasses
  • Clear epoxy
  • Vacuum up any loose debris in the cracks so the epoxy can adhere properly.

  • Put on safety glasses and gloves to protect your eyes and skin from the epoxy.

  • Mix the epoxy sealant according to instructions on the container. Generally, mix 2 parts resin with 1 part hardener.

  • Apply the epoxy sealant directly to the hairline crack, using a toothpick to smear the epoxy down the length of the crack. Place a small amount of epoxy beyond the edges of the crack so the sealant forms a solid layer over the crack.

  • Allow the epoxy to set and harden for at least 24 hours before using the shower.

Tips & Warnings

  • Purchase clear epoxy sealant from a home improvement center. The color of epoxy will be listed on the container.
  • Fixing hairline cracks in terrazzo shower bases only repairs the current damage and doesn't prevent further damage. If larger cracks form in the terrazzo base, consult a professional to repair.


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