Installation Guide

04.4.2018 | Page 6
Flexco Floors | 1401 E. 6th St. - Tuscumbia, AL 35674
P: 800.633.3151 | excooors.com | Made in the USA
TECHNICAL DATA SHEET
VINYL STAIR TREADS, RISERS & STRINGERS
Vinyl Treads
To aid in scribing and trimming the back
edge of stair treads, a spacer (such
as a carpenters level, 1" x 2" wood or
equivalent) is required to set the depth of
the tread. Prior to cutting the back edge
of the stair tread, measure the depth of
the step and the thickness of the spacer.
Rough cut stair tread to be at least 1/4"
deeper than the step but no deeper than
the width of the spacer.
Once the back edge has been rough cut,
align stair tread to the back of the step
riser above. Insert the spacer between
the leading edge of the stair tread and the
step nose, ensuring that the spacer and
stair tread fit snugly against the step. Set
the divider to the exact width of the spacer
and scribe the back edge of the stair tread
to the step riser. Trim the back edge stair
tread along scribe mark, creating a slight
undercut to ease installation. Ensure that
all sides of the stair tread fit snugly to step
while avoiding over-compressing material.
Once the initial step has been scribed and
trimmed, the riser should be scribed and
trimmed to accommodate imperfections
in the step stringers using the Two Side
Scribe Method.
TWO SIDE SCRIBE METHOD
Prior to trimming risers, ensure that the
stair tread below has been trimmed and
fits snugly on the step beneath the riser.
Use the previous center mark used when
trimming the adjourning stair treads as
the center of the stairwell, ensuring that
center mark is visible while trimming
risers. Determine the center of each riser
and mark a center line on the top of the
riser for alignment during trimming and
installation. When necessary, rough cut
riser to within 1/2" - 2" of step dimensions
to make scribing and trimming easier.
Align the riser to the right side of the step
and set divider to the distance between
the center mark on the step and the
center mark on the riser. While applying
firm pressure to the stringer 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.
6. 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
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)
Overlapping Seam Method
Scribed Seam Method