Installation Guide

08.14.2017 | Page 7
Flexco Floors | 1401 E. 6th St. - Tuscumbia, AL 35674
P: 866.955.8291 | F: 419.436.4302 | excooors.com | Made in the USA
TECHNICAL DATA SHEET
RUBBER STAIR TREADS, RISERS & STRINGERS
Distinct Designs
made prior to installing adhesive. Stringer
should be flush with all step surfaces.
Apply adhesive according to instructions
for specific product in use. Be sure to follow
instructions based on substrate porosity
(porous or non-porous). 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
disrupting material until adhesive has
cured for light foot traffic.
Carefully position stringer to ensure that
stringer material is flush with steps. 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.
6. STAIR TREAD & RISER
PREPARATION
Prior to trimming and installation, confirm
material installation pattern per design
specifications or work order, especially
when installing profiled treads or butting
treads. If patterns need to be centered or
aligned, ensure that stair treads are long
enough to allow for trimming on either
side of tread.
Inspect all stair treads and risers prior
to trimming or installation to verify that
there are no visible defects, damages
or excessive shading variations. Some
products, colors and textures have latent
and acceptable color and shade variations.
If there are concerns regarding shade
or color variation, do not install material
and consult sales representative and
manufacturer’s technical staff.
Due to natural variances in stairwells
and steps, all Distinct Designs stair tread
and riser installations are intended to be
scribed and trimmed on-site to conform
to each step, using one of the following
scribing methods. Prior to trimming and
installation, ensure stair tread nose fits
the substrate, especially when installing
round nose treads or square nose treads
that are not adjustable, as nosing may not
conform to steps that are not designed
for the specific stair tread in use. Do not
install stair treads that do not conform to
the substrate or alter the interior stair tread
nose to conform to steps, as this could
result in premature wear and damage,
as well as void any and all expressed or
implied warranty.
Prior to trimming stair treads and risers,
ensure that specified stringer materials
are installed and that adhesive has cured
for light foot traffic to avoid stringer
adhesion issues. When scribing stair
treads and risers, start from the bottom
of the stairwell to ensure that stair treads
and risers are properly trimmed. Be sure
to protect stringer materials from sharp
edges, such as a sharp edge of a divider,
during stair tread and riser trimming and
installation.
THREE SIDE SCRIBE METHOD
Determine the center of the stairwell and
mark a center line on the riser portion of
each step. Determine the center of each
stair tread and mark a center line on the
back edge of the tread for alignment
during trimming and installation. When
necessary, rough cut stair treads to within
1/2" - 2" of step dimensions to make
scribing and trimming easier.
Align the stair tread to the right side of
the step and set divider to the distance
between the center mark on the step
riser and the center mark on the stair
tread. While applying firm pressure to the
stringer material with divider, mark the
stair tread with the divider to determine
scribe line. If using a One-Piece Tread &
Riser, scribe the riser portion of the tread
as well. Use a suitable knife to trim stair
tread along scribe mark and create a slight
undercut to ease final installation.
Once the right side of the tread is scribed
and trimmed, reposition the stair tread 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 stair treads as before and trim
stair tread along scribe mark, creating a
slight undercut. Ensure that stair tread
fits step snugly against stringers without
over-compressing tread material.
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