What is L&L's brick facing for and how do I use it?

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What is L&L's brick facing for and how do I use it?

Facing is meant to penetrate into the brick 1/2" or so. When it is fired, it makes that part of the brick harder and more reflective. Be sure not to use too much! Too much in the proper consistency will penetrate too deeply, hardening too much of the brick. Hardening takes away some of the heat-retaining ability of the brick so you just want a bit of it on the inside layer. Too thick and it will harden and fall off after a few firings, taking a bit of the firebrick with it.

  1. It comes concentrated- mix with water until it is about the consistency of milk.
  2. Keep mixing it as it will settle out quickly.
  3. Do a test spot to be sure it is not too thick somewhere on the brick- after it dries in a minute or two you should see no sign of it except a faint milky residue in the pores of the brick.
  4. Paint/ spray the lid with it- nice even and just one coat. You should be able to see through it - it isn't like a paint.

Additional Actions to Take

  1. Dig out any loose particles with a small knife.
  2. Brush and vacuum the surface of the brick clean to remove any loose material or crumbling firebrick.
  3. Wet the brick surface lightly with clean fresh water. Use a paint brush or spray bottle (make sure there is no soap residue in the bottle).
  4. Apply a thin coat of brick cement all over the hole. This is defined as about 1/32" to 1/16" thick. Do this with your finger, a small brush, or a spatula.
  5. Fill hole with the special grout material. Apply grout with a spatula (like plaster). You can also use your finger. Push it into the hole. It is OK to let it be a rough surface or slightly larger than the hole it is filling.
  6. Let dry for 24 hours.
  7. Take some rough sandpaper and sand surface to even it out with the rest of the firebrick.
  8. Run the First Firing Cycle ( See first-firing.pdf in the Operation Section or see this search link).
  9. You can brush on brick facing afterward if you desire.
  1. Cut out an area around the brick chip with a small knife, saw or router. The hole that you make should have 90 degree angles so that a square or rectangular block will fit in the hole.
  2. Cut a piece of firebrick to fit into this cut out hole. The piece should be slightly smaller than the hole (by about 1/16" to 1/8").
  3. Both the hole and the brick piece should be brushed and vacuumed clean.
  4. Wet the surface lightly. (Both the hole and surface of the block that you are going to insert in the hole). Use a paint brush or spray bottle (make sure there is no soap residue in the bottle).
  5. Apply the Kiln Cement to the surface of the piece that you are going to put in the hole. Use only about 1/32" or 1/16" of cement.
  6. Insert cut piece of firebrick immediately and push into place so that it makes contact on all sides with the underlying firebrick.
  7. Let dry for 24 hours at minimum.
  8. Cut off and/or sand off excess brick and cement.
  9. Cover with Brick Facing and allow to dry for another 24 hours.
  10. Turn kiln onto low for 3 hours to dry totally.
  11. Run the First Firing Cycle (See first-firing.pdf in the Operation Section).

See this video: