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					JOINTING AND FINISHING
     OF CERAMICS


                PRESENTED BY:-
                     ALKA
                    SAKSHI
                   SUMBUL
                   VAISHALI
                    YAMINI
  Jointing of CERAMIC TILES
 The grouting or jointing of ceramic wall tiles should be
  carried out after all the tiles have been fixed and allowed
  to firm up (this usually means leaving them for at least 24
  hours after the last tile has been fixed).
 Before applying any grout, make sure that the tile faces
  and joints are all clean - often when fixing tiles, small
  amounts of tile adhesive will get on the glaze and squeeze
  out of the joints - all this needs to be removed before
  grouting.
 Ensure that the correct type of grout is used for where you
  are using it, i.e. use waterproof grout where necessary.
 Grout is available as either premixed or as a powder for
  mixing with water.
`
Pull the float diagonally across the joints so that the edge does
not drop into the joint lines, keep changing the direction of the
squeegee so that both the vertical and horizontal joints are filled.
 Use one of your fingers to fill-in any joint which the squeegee
cannot cover.
 After all the joints are filled with the grout, clean off the
squeegee and holding it at about 90 degrees to the tile face,
remove any excess grout by pulling it diagonally across the joints
-this will keep the grout in the joints level with the face of the
tiles.

 Sedged tiles need to grout to be finished flush with the tiled
face-tiles with radius edges need the grout to be finished to the
bottom of the radius.
Once the grout has hardened off (typically about 10
minutes, but the grout instructions should specify), clean
the face of the tiles of surplus grout by lightly wiping a
clean, damp sponge across it - keep the sponge reasonably
clean by rinsing any excess grout from it.
TOOLS AND MATERIALS
1)   Grout saw
2)   Squeegee or grout sponge
3)   Grout Float
4)   Cotton cloth
5)   Dry towel
6)   Grout
7)   One-to-one vinegar and water solution
8)   Grout sealant



                                     For sealing and jointing of glass
 FINISHING
 For a grouting finish level with the face of the tiles, repeat
  the sponging after another five minutes.
 For a concave joint finish, smooth away the excess grout
  from the joints by pulling a round finishing tool, or the
  end of a length of wooden dowel, along the joints.
 With a almost dry sponge, clean the surface again - for
  concave joints, use the finishing tool again over the joints.
Leave the grouted area for about 24 hours and then wash
down the tiles with a clean, damp sponge once or twice to
remove any last trace of grout residue from the tile surface.
When the tile surface has dried off, polish it using a clean,
soft dry cloth to remove any remaining fine film of grout.
                 TYPES OF FINISHES
UNGLAZED TILES:-
are very hard and dense. They come in various surface treatments
and textures.
Typically, these tiles are installed outside home as they do not offer
much protection against stains compared to glazed ceramic tile.
Unglazed tiles do have good slip resistance.
GLAZED TILES:-
are coated with glass-forming minerals and ceramic stains.
Typically, they have a matte, semi-gloss or high-gloss finish.
They can offer better stain and moisture resistance than unglazed
tile.
Glazed tiles can also have different finishes.
High gloss finishes can be more slippery and
scratches can become more visible,
while matte or textured finishes
help with scratches, and
dirt is less visible.
CRYSTALLINE GLAZE:-
• Finishes vary from bright to matte on the same piece of tile. The
crystals differ from the surrounding glaze.
• Glazing for different purpose made in different degrees of
hardness in accordance with their ultimate use, e.g. –
  a. Soft Glaze – Purely decorative glaze.
  b. Hard Dull Glaze – For the abrasive action of foot traffic. These
are fired at high temp.
THANK YOU

				
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posted:11/13/2012
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