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Applying Stone Veneer To Existing
Wood/Wood-Type Construction
Interior Use: Cover area with 2.5 galvanized wire lath,
nailed
horizontally with 1” & 3” galvanized nails across wall
every 6” on
center into the studs. The diamonds in the lath form a pocket
to
retain the mortar mix. Smooth side down, rough side up. Make
sure lath is flat against the wall. Trim excess lath with
wire snips.
Now, see “Scratch Coat.”
Exterior Use: Refer to “APPLYING THE STONES.” Cover
substrate with 15 # felt paper, then attach 2.5 galvanized
wire
lath (or use paperbacked 2.5 galvanized wire lath, (WATER
PENETRATION TO SUBSTRATE CAN CAUSE DAMAGE) overlap-
ping 2” on horizontal joints, 6” on vertical joints. Repeat
exact
procedures in step (a. Interior Use) now, see “Scratch Coat.”
This
stone should not be assumed to add strength to load bearing
capacity. This veneer is for aesthetic purposes. Stone should
be
installed a minimum of 4” above finished grade. Stone should
not
be used in below-water applications such as swimming pool
liners
or in areas vulnerable to slush formed by salt or chemicals
used to
melt ice or snow. We do not recommend our stone for flooring
or
driveway uses.
Applying Stone Veneer To Masonry
Stone may be applied directly to a clean masonry wall. Painted
or sealed surfaces must first be cleaned by sand blasting
to form
an adhesion for the mortar mix, or by attaching metal lath
with 1”
masonry nails, then repeating steps in (a. Interior Use) prior
to
installing stone. Now, see “Scratch Coat.”
Applying Stone Veneer To Metal Studs
Stone may be applied to metal studs of 18 gauge minimum. Repeat
exact procedures in steps (a. Interior Use) and (b. Exterior
Use)
installing 15 # felt paper (or paper backed 2.5 galvanized
lath) and
2.5 galvanized lath with # 8 self-tapping metal screws. Make
sure
screws penetrate the studs no less than 1/4”. Now, see “Scratch
Coat.”
Mixing/Applying “Scratch Coat”
Mix one bag Portland Type 1, Type S or Type N mortar add sand
per
manufacturers instructions. (Average 3 bags mortar mix per
pallet
of stone.) Add water, blending to a creamy paste-like consistency,
yielding enough to install a minimum of 90 feet of stone.
All tightly
secured wire lath should be completely
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covered by using a stainless steel trowel with 1/2” – 3/4”
thickness
of mortar mix. Once cured, the rigid backing ensures bondage
of the
stone veneer of your choice.
Applying The Stones
Apply stone to a workable area so mortar does not set up before
the
stone is applied. If you are using corner stones, these stones
should
always be applied first. Remaining stones are applied bottom
up, or
top down. In hot/dry weather, spray a fine mist of clean water
on to
the back of the stone to prevent water absorption from the
mortar
mix. In cold weather, temperatures should be 40 and rising.
Trowel
a thin layer of mortar mix on to the back of the stone. Position
and embed the stone on to the surface in a tight uniform pattern.
For a natural look, joints should not exceed 1” in width.
Press the
stone firmly, wiggling it to ensure bondage. Proper embedding
will
force the mortar mix to squeeze out around the edges. A correct
consistency of the mortar mix will allow the stone to stay
in place
while the mortar mix cures. Wipe wet mortar mix from the stone
front with a wet sponge.
Grouting Compound/Fill Joints
Use 1 bag of masonry mix and sand per manufacturers instructions.
Color can be added to the grout with iron oxide pigments if
desired.
Fill grout bag with approximately 2 quarts of paste. Squeeze
paste
and fill all joint areas between stones. Do not allow paste
to dry.
Wipe with wet sponge. Never use acid, a wire brush or pressure
washer, to clean stone veneer. Stone can be cleaned with granulated
soap/detergent. Rinse thoroughly.
Finished Joints
As mortar joints cure and become firm, use a wooden or metal
striking tool to remove excess mortar and level the grout
in the
joints. Fill in holes, gaps and openings.
Sealing Stone
Sealing stone is optional and usually unnecessary. Sealing
the stone
will darken the stone color and add a gloss. You can test
the color
by applying water to the stone to give you a view of what
sealing
your stone may look like. Sealing can be accomplished with
masonry
sealer. Allow stone veneer wall to cure, then, follow masonry
sealer
manufacturers’ instructions.
Premier STONE®
is made in the U.S.A. and proudly manufactured by
Stone Warehouse, Inc.
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