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Historic Preservation - Technical Procedures

Spectitle:
Repairing Broken Tiles

Procedure code:
0931009R

Source:
Ohj - March/April 1991

Division:
Finishes

Section:
Ceramic Tile

Last Modified:
02/24/2012

Details:
Repairing Broken Tiles



REPAIRING BROKEN TILES


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on using epoxy to repair
         broken tiles that are cracked or split cleanly through
         the tile.  SURFACE CRAZING OR SMALL SURFACE FLAWS IN THE
         GLAZE DO NOT NEED REPAIRING.

    B.   Repair is preferable to replacement if the break is clean
         because the removal of even one tile runs the risk of
         causing damage to adjacent tiles.


PART 2---PRODUCTS

2.01 MATERIALS

    A.   Patching Resin:  Manufacturers' standard 2-component
         epoxy resin, designed specifically for patching of
         ceramic tile materials.

         1.   Tint to match color of existing tile following
              manufacturers' recommenda= tions.

    B.   Enamel to match color of tile.

    C.   Clean, potable water.

2.02 EQUIPMENT

    A.   Stiff bristle brush

    B.   Caulking gun

    C.   Repointing tools (such as a hacksaw blade, chisel, and
         steel trowel
=0CPART 3---EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

    A.   Clean out the crack of any loose dust and debris using a
         stiff bristle brush or by blowing air into the crack.

    B.   Blend the resin materials to match the color matri= x,
         adding pigment as required.

    C.   Following manufacturer's instructions, force mixed resin
         into the void using repointing tools or a caulking gun,
         making sure it is pressured into the crack as deep as
         possible.  Fill until flush with the surface.  Sometimes,
         the supplier will instruct using a primer for their
         materials.

    D.   Touch-up repaired surface with enamel to match color of
         tile.

    E.   Do not extend patch material into the grout or mortar
         joint.  Crack repairs should be limited to individual
         tiles.

                             END OF SECTION