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Materials recommended for Installation
- Skilsaw brand
saw (worm drive), or equivalent, to cut the granite
- 7” Diamond
blade
- Marble & Granite
Mortar mix or Thinset to adhere granite to plywood
- Sponge and
bucket or garden hose
- Masking tape
- Color caulk-ceramic
for use as a water barrier between the backsplash and the wall
and between the countertop and the backsplash
- Caulk finishing
tool
- 2 part Epoxy
for seams
- Hardener to
mix with epoxy
- Single-edge
razor blades to remove excess epoxy from seams
- 511 Impregnator,
or equivalent granite sealer
Installation Process
- For new cabinets,
use ¾” plywood as a sub-top for
granite countertops. Cut the plywood to fit the top of the cabinets
with no overhang. (Note: For 24” wide cabinets, the plywood
sub-top will be 24” wide.) For existing cabinets, remove only
what is necessary for a clean and flat surface. Laminate countertops
usually
can be left in place and the granite fitted on top of the laminate.
If you do this, remember to sand the laminate (#80 sand paper) to allow for
a rougher sub-top surface for the granite to properly adhere to.
- Take measurements
of the plywood sub-top to determine the cuts for the granite countertops.
Apply masking tape to the granite top surface
and draw cutting lines with a pen and straight edge. Masking
tape allows the line to be visible while cutting as water runs
over the granite. Always start cutting from the top, or polished
side of the granite to ensure a true fit with no chipping.
- Allow the
blade to cut smoothly through the granite; do not push the blade;
rather, apply moderate and consistent pressure. Complete 4 passes
at ¼” depth
while cutting granite. While cutting granite, a wet sponge or garden hose
running over the surface allows for smoother cutting with
few dust emissions. Take your
time. (NOTE: Remember, the blade is 1/16” wide so cut to one side
of your marked line to allow for blade width.) Use a guide, or rail, for
straight cuts. Backsplash pieces work well as a rail. Hold the backsplash
in place with clamps
on both sides.
- Fit granite
countertop into place after cutting to measure for the fit. Remember,
if you are using our granite backsplash
and your walls are not straight,
you may have up to a 3/4” gap between the countertops and the wall.
This gap will be covered up by the 1” thickness of the granite
backsplash. Take the next measurement from that recently cut granite
countertop
and cut the next adjoining piece.
- Fit all granite
countertops into place. Apply the mortar mix on the underside
of the granite with a ¼” trowel and adhere it to
plywood sub-top. Mix the mortar to a very thick consistency to
allow for leveling adjacent countertops. If the granite
countertops are not level with each other, lift the countertops in
place on their back edge (the countertop is now at a 30 degree
angle). Apply more mortar to areas needed to level and gently
lower the countertop back into place. This may require multiple
mortar
applications.
- After all
countertops are secure, you can begin fitting your backsplash
pieces into place. Follow the above instructions.
- When the countertops
and backsplash are in place and secured, begin placing epoxy or
caulk into the seams. If you use
Epoxy it hardens
in approximately
5-10 minutes, so mix only enough for instant application. Check
that the color of the epoxy blends to your liking with the
granite countertop
before
you apply
it in the seams. Mix 10 parts color matched epoxy to 1 part hardener
and begin to apply to seams. Use razor blades and Acetone to remove
any excess
epoxy.
If you are using Caulk, apply a thin bead between granite countertop
and the backsplash. Also, apply a thin bead between the wall and
the top edge of the backsplash. Use a caulk finisher to smooth
the caulk.
- After the
installation is complete, the moisture from the mortar (between
the plywood
sub top and granite countertops) will dissipate
through
the top of
the granite; creating a “wet” look. This moisture
usually requires 2-4 days to dissipate, depending on room temperature.
After the“wet” look
disappears, apply the granite sealer to the entire countertop
surface with a white paper towel. Let the sealer dry for 24 hours
before using your new granite
countertop.
- The ¾” plywood
underneath your granite countertop can be covered with ¾” wood
trim to match your
cabinets.
- Job well done!
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