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DESCRIPTION AND BASIC USE •
EPS Formliners are constructed
from expanded polystyrene (styrofoam).
EPS Formliners
leave a smooth, easy to finish surface for countertops, steps, pool
coping and wall caps.
LIMITATIONS •
Petroleum-based form oils should be
avoided.
SIZES
•
EPS Formliners are available at 2.25"
x 6" high and 2.25" x 7.5" high. Available in 8' lengths. 112' total
per box.
PREPARATION OF SUB
GRADE • The subgrade must be
uniformly graded, compacted and moistened, but free of standing
water. Avoid placing concrete over soft, frozen, or muddy spots.
Follow professional standards and practices, including .those
published by the American Concrete Institute (ACI).
PREPARATION FOR FORMLINER INSTALLATION •
Preparation techniques may vary according to type of application. To
properly release forms, the use of non-stick
cooking spray is recommended. Spray forms approximately 5 to 15
minutes prior to placing concrete.
For additional reinforcement, once formliner has been set; it is
recommended to use a break-away tie wire with washer every 9 to 14
inches at the top third of the formliner. Tie wires should run
through the backside of the formliner and attach to screws or
nails embedded into the horizontal surface 6 to 8 inches from the
edge of the formliner.
Break-away tie wires have a serration that severs back into the
concrete prior to removing the formliner.
Click
Here to view attachment methods.
CONCRETE &
MASONRY: The use of concrete screws with washers are suitable when
attaching
EPS Formliners to
concrete or masonry materials.
A 3.25" concrete screw with washer is recommended every 9 to 14
inches at the bottom half of the formliner.
WOOD: The use of finishing nails or drywall screws with washers
are suitable when
attaching
EPS Formliners to
wood. A 3.25" drywall screw
with washer or finishing nail is recommended every 9 to 14 inches at
the bottom half of the formliner.
TILE: The use of double
sided tape is suitable when attaching
EPS Formliners to tile.
The tile must be clean and free of
dust before setting the formliner. Apply double sided tape (one foot
at a time) near the bottom half of the formliner and stick the
formliner to the tile with the bottom of the decorative profile edge
level with the top of the tile.
PREPARATION OF
CONCRETE • The concrete
should be designed to meet the strength and finishing requirements
of the project with a slump of 4 to 6 inches, achieved by using a
water reducer. The higher slump allows the mix to flow easier,
increasing detail. Use of a plasticizer will minimize air voids.
Avoid overly sandy mixes or mixes with high air-entrainment. These
types of mixes can be sticky and promote bug holes. Pea gravel is
recommended in the mix since oversized aggregate can cause chipping
or honeycombing on the vertical surface.
CONCRETE
PLACEMENT • Once the
concrete is placed and leveled out, the use of a concrete vibrator
along the inside edge of the formliner is recommended. The use of a
concrete vibrator will help eliminate honeycombing and promote a
smoother finish. Use a straight edge to screed off excess concrete
then float and trowell to the desired finish.
FORM REMOVAL AND
FINISHING • EPS Formliners
can be removed as soon as the concrete can support its own weight.
To remove the formliners, first snap off the tie wires by twisting
the break-away tie wires clockwise. Next, remove screws or nails
from formliners and peel the top of the form back and away from the
concrete. Upon removal of the formliner, the use of a profile
finishing tool is recommended to finish the vertical surface of the
concrete.
Additional Information
Formliner Attachment Methods
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Customer
Service (800)777-7063
E-Mail
kris@matcrete.com
