Installation Instructions

3
ADHESIVE INSTRUCTIONS(cont)
Nose Caulk
VPI NC-2 is a solvent-free, two-component Epoxy Nose-
Caulk designed for use with rubber stair treads. It’s a non-
flammable, high-performance epoxy adhesive,
recommended for indoor stair installations over porous and
non-porous substrates. It is recommended for all stair treads
to provide support to the nose. Stairs (substrate) must be
structurally sound, dry, clean and free of dirt, dust, grease,
paint, curing compounds, sealers, or any other extraneous
material which may interfere or compromise adhesion.
Application over concrete stairs requires the concrete to be
fully cured and dry. Adequate Nose caulk must be applied to
the corner of the stair tread nose so that when placed into
position all voids are filled. See Nose-Caulk label for
detailed application instructions.
Coverage will be approximately 25 linear feet with a 3/8”
bead.
Set time of 30 minutes.
Cure time of 24 hours – 72 hours for heavy traffic and rolling
loads
EQUIPMENT REQUIREMENTS
• 25 ft retractable rule
• Retractable knife
• Spare blades
• Pencil
• Masking tape
• Trowel 1/16” x 1/16” x 1/16”
• Gundlach Airway #222 Hand roller or equivalent
INSTALLATION OF STAIRWELL
SYSTEM
STRINGER INSTALLATION
Stringers are applied to vertical wall surfaces next to the stair
tread.
• Make a template in cardboard or an appropriate
material.
• Measure the height and depth of each step and
transfer the measurements to the template.
• Rough cut the template.
• Fit template to stairs and trim template where
necessary to obtain a snug fit to the staircase.
• Cut stringer material utilizing template. Dry-fit
stringer material to staircase and make any
necessary adjustments before permanent
installation.
• The VPI 100 Adhesive can be spread on porous
and non-porous wall surfaces with a trowel 1/16” x
1/16” x 1/16” square notched. Refer to the
adhesive instructions for proper use of the
adhesive.
• Position and install the stringer followed by hand
rolling to ensure that the adhesive transferred.
• Clean up any excessive adhesive before the stair
treads are installed.
SMART STEP INTREGRATED 1 PC (RISER
INCLUDED) RUBBER STAIR TREAD
INSTALLATION
--NOT USING VPI BRANDED ADHESIVE AND NOSE CAULK IN
ALL INSTALLATIONS, OR FAILURE TO SAND (ROUGH UP) THE
BACK OF EACH TREAD BEFORE INSTALLATION ON NONPOROUS
SUBSTRATES, ALONG WITH ANYTHING THAT DEVIATES FROM
THESE INSTRUCTIONS, VOIDS WARRANTY COVERAGE.
• Smart Step one-piece tread-riser combination
must be trimmed to fit and dry laid on each step
prior to any adhesive application. Each step in the
staircase may be different
• Make sure all conditions are met regarding surface
preparation before starting the installation.
• Scuffing the back of tread and under nose with 60
grit sandpaper prior to installation is required for all
nonporous installations.
• Wipe the back of each tread with a clean dry cloth
to remove any debris.
• OPTIONAL - Place the ACC06 Cove Stick against
the base of riser on the step. Trim the length of
the cove stick to the length of the step and adhere
to step with VPI 503 adhesive. Refer to the
adhesive instructions for proper use of the
adhesive.
• For Raised Round patterned treads, if pattern
alignment is desired, the same point should be
aligned in the center of the step for visual
alignment. An extra 1.5” length of tread is
provided for visual alignment and end squareness.
• All other patterns can be cut by measuring the
step and cutting the stair tread. Cut all treads 1/16”
short on both ends to allow for expansion. VPI
stair treads are manufactured with the intent that
one or both ends of the treads will need to be
trimmed to properly fit the step. Each step must
be dry laid to ensure proper fit.
• The integrated riser can be fitted to the nose in
one of two ways as outlined in options 1 or 2.
Option 1 – Butting the riser to the nose.
• Fit integrated riser tight to the bottom of the nosing
installed above the current step. Scribe the riser
at the point it contacts the nose & use a utility knife
to cut the riser along the scribed line.