APPLYING ADHESIVE: Apply a
good quality latex-modified thinset approved for use with
glass mosaic tile. Be sure to use a thinset that is
compatible with your substrate and environment (i.e. wet
areas or exterior areas).
Using a 3/16"e; v-notched
trowel, apply the thinset to the substrate in straight
lines. Cover only as much area as you can work within
10 - 15 minutes, so that the applied thinset remains
tacky. Flatten the ridges to achieve a smooth flat
setting bed and prevent trowel lines showing through
include Custom Building Products' Flex-Bond, Tec's
Superflex, TA-393(white)or TA-392(gray) and Mapei's
NOTE: Ceramic Tile
Mastic WILL NOT WORK with glass tile.
BACK-BUTTERING: Next, spread a thin
layer of thinset on the exposed (patterned) side of the
glass mosaic tile sheet with the straight edge of your
trowel. This back-buttering step is best used for all
glass mosaic tile, but is essential in the use of
transparent tile, in order to hide the trowel lines on
the substrate which might otherwise show through. Back
buttering also assures near-complete (95%)surface
adhesion between tile and substrate.
NOTE: During back-buttering, it is
common for thinset to push through the grout joint and
rise above the surface of the tile once the sheet is
applied to the wall. For this reason, professional
installers "e;set in color"e;, or use the same installation
product as both mortar and grout. Check with the
manufacturer of the thin set you choose in order to
verify its suitability. If you choose not to set in
color, you can remove excess grout as described
SETTING: Set your sheets with the PAPER
FACING OUT. Sheets should be placed onto the newly
trowelled thinset on your surface immediately. DO NOT
delay this step, or your thinset will dry and the tiles
will not fully adhere to the surface.
LEVELLING: Square the sheet and apply
to your surface,then "e;beat in"e; gently with a block of
wood and hammer or a grouting float to assure 100%
adhesion and level surface. Beating in across the sheet
joints as you install will better assure a level field
across the entire area. Properly beating in and
levelling will prevent air bubbles from being trapped
between thinset and tile.
ALIGNMENT: Align each sheet carefully
as it is installed to create uniform grout joints from
sheet to sheet.
REMOVING PAPER (1): Wait 15-20 minutes
for the thinset to bond. Begin wiping down the paper
with a damp sponge and warm water. Rub lightly to avoid
disturbing the tile placement. The paper facing will
begin to darken as the water is absorbed.
REMOVING PAPER (2):
After 2-3 minutes, test a corner of the paper sheet.
Pull lightly downward at an angle instead of straight
out. If the sheet does not pull away cleanly, sponge
again until the paper releases easily. Remove the paper
facing as you install the sheets one group at a time.
Once the paper has been removed, examine and straighten
any joints that are not aligned. This MUST be done
while the thinset is still pliable. Do not wait until
all of the sheets are installed to begin straightening
joints. Repeat these steps until all sheets have been
GROUT PREPARATION: After
24-48 hours, the thinset will be cured, and the tile
will be ready for grouting.
Use a nylon bristle
brush, a sponge, and warm water to clean any glue or
paper residue from the tile surface. If necessary, use
a utility knife to carefully remove any excess thinset
from the joints.
GROUT APPLICATION: With
a hard rubber float spread your prepared grout at a 45
degree angle (on a diagonal)across the tile field.
After grouting the area, wait 20 minutesbefore you
start to clean the excess.
GROUT CLEAN-UP: Wipe excess grout off,
first with a dry cloth, such as cheesecloth or any
other lint-free cloth to remove excess grout on the
tile surface. Follow up with a sponge and warm water.
The less water you use, the better, as too much water
can weaken the grout before it sets. Once the tile
looks clean, go back over it with fresh water and a
damp sponge to reduce surface film. Allow tile surfaces
to dry for 15 minutes, then buff with a soft cloth
until shiny. If you wait longer to clean and buff the
tile, the resulting grout haze will become difficult to
CLEANING & SEALING: Once the
installation is completely dry (1-2 days) you can
safely clean any remaining grout haze or residue with a
tile cleaner and scrubbing pad. Once tile is cleaned
and dry, seal grout with a good quality sealant to
prevent mildew and staining.
NOTICE: This information is offered
as a guideline only. No warranty is implied. For best
results, hire a professional tile installer experienced
in the application of face-mounted glass mosaic
Copyright 2004 Mosaic Tile Supplies,