Installation & Assembly

TECHNICAL DATA SHEET
01.30.2018 | Page 9
Roppe Corporation | 1602 N. Union St. - Fostoria, OH 44830 | (800) 537 - 9527
RUBBER STAIR TREADS,
RISERS & STRINGERS
raised design
material with divider, mark the riser with
the divider to determine scribe line. Use
a suitable knife to trim riser along the
scribe mark.
Once the right side of the riser is scribed
and trimmed, reposition the riser to
align to the left side of the step. Reset
the divider to the distance between
the center mark on the step riser and
the center mark on the stair tread. Use
divider to scribe riser as before and trim
riser along scribe mark, creating a slight
undercut. Ensure that riser fits the step
snugly against stringers and stair tread
below without over-compressing riser
material. Avoid over-compressing toe to
avoid premature wear and damage.
The seam between the leading edge of
the stair tread and the stair riser should
be treated using one of the following
methods.
SCRIBED SEAM METHOD
When butting stair tread and riser seams
using the Scribed Seam Method, ensure
that the stair tread above and below the
riser, as well as the riser itself, have been
trimmed and fit the step snuggly. Ensure
the stair tread below the riser is in place
prior to scribing the riser to ensure a
tight fit to the leading edge of the stair
tread above.
Overlap the stair tread above the riser
with the riser while ensuring that riser
toe is not over-compressed. Using the
leading edge of the stair tread as a
guide, use a divider or a marking tool to
scribe the riser. Use a suitable knife to
trim riser along the scribe mark.
OVERLAPPING SEAM METHOD
When overlapping stair tread and riser
seams, ensure that the stair tread and
riser have been trimmed and fit the
step snuggly. Risers do not normally
require trimming on the top edge prior
to installation when overlapping seams.
However, if the top edge of the riser
extends up to or over the height of the
step, trim riser to 1/4" - 1/2" from the top
of the step to allow space for the EN-610
Epoxy Nose Filler Adhesive.
7. STANDARD TREAD & RISER
INSTALLATION
Ensure step substrate is suitably prepared
prior to installation, as manufacturer is
not responsible for substrates that have
not been properly prepared and tested
for moisture. When using the Excelsior
TP-620 Pressure Sensitive Tape Adhesive
or the C-630 Contact Adhesive, be sure
to a clean dusty and/or cementitious
substrates with a damp mop or sponge
prior to installation to remove dust, dirt
and debris.
Ensure adhesive is approved for use
with stair tread material and that
proper trowel type and size is used,
as manufacturer is not responsible for
any and all adhesion issues related to
improper adhesive selection or usage.
Prior to installing adhesive, ensure all
stair treads and risers have been trimmed
and all stringer materials have been
installed. Clean the underside of the
stair tread with a clean rag or towel and
denatured alcohol or equivalent solvent
adhesive remover. Failure to do so may
result in adhesion issues due to mold-
release chemical contamination. Apply
adhesive according to instructions for
specific product in use. Be sure to follow
instructions based on substrate porosity
(porous or non-porous). See chart above
for reference.
When installing adhesive on steps,
be sure to leave a 1/2" - 3/4" space on
either side of step nose to accommodate
the Excelsior EN-610 Epoxy Nose Filler
Adhesive and avoid adhesive cross-
contamination. Prior to installing the
stair tread into adhesive, apply a 1/4" -
1/2" bead of the EN-610 to the interior
nose of the stair tread. All stair treads
must have the EN-610 installed in the
stair nose. Failure to do so may result
in premature wear and damage which
could compromise egress safety.
When using the overlapping seam
method, use Excelsior TP-620 1" tape
to adhere the back side of the stair
tread nose to the top of the riser below,
in order to provide a tight seam and
prevent a possible tripping hazard.
Roll material with a hand roller or
equivalent within 30 minutes of
installation, crossing in a perpendicular
direction after initial roll. Visually inspect
installation to ensure that material has not
shifted and that adhesive has not been
squeezed out of joints or compressed
onto surface.
Replace trowels and/or applicators at
recommended intervals to maintain
proper trowel ridge and spread rate.
When installing into adhesive using a
wet-set method, avoid walking, kneeling
or working on material until adhesive
has cured for light foot traffic. Working
on material that is installed into wet
adhesive could cause adhesive to
displace. When working off of material
is not possible, use a kneeling board
or equivalent to disperse weight evenly
and prevent adhesive displacement.
Overlapping Seam Method
Scribed Seam Method
Adhesive Porous Non-Porous
AW-510 160 sq. ft. N/A
EN-610 25 - 50 lin. ft. / Cartridge
TP-620 164 lin. ft. / Roll
C-630 20 - 40 sq. ft. / Pail
MS-700 160 sq. ft. 235 sq. ft.
Brushed &
Rough Porous
Smooth Porous &
Non-Porous
EW-710 135 sq. ft. 150 sq. ft.
Adhesive Coverage Rates (Per Gallon)