Installation Guide
04.4.2018 | Page 7
Flexco Floors | 1401 E. 6th St. - Tuscumbia, AL 35674 
P: 800.633.3151 | excooors.com | Made in the USA
TECHNICAL DATA SHEET
VINYL STAIR TREADS, RISERS & STRINGERS
Vinyl Treads
specific product in use. Be sure to follow 
instructions based on substrate porosity 
(porous or non-porous). See chart below 
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. 
Periodically lift material to ensure proper 
adhesive transfer and ensure adhesive 
has not surpassed the open time – 
adhesive should cover 90% of the stair 
tread and riser. Clean excessive adhesive 
or adhesive residue from the surface of 
the material using a clean cloth or mop 
and a solution of warm water and a pH 
neutral cleaner. Do not use abrasive or 
solvent based cleaners. 
To prevent movement, dust, dirt, debris 
and topical moisture in or around seams, 
tape seams together after installation 
using a multi-purpose masking tape 
intended for flooring and hard surfaces. 
Pay close attention to open times to 
avoid adhesion issues. This may require 
installing material in smaller sections.
7.   BUTTING STAIR TREADS
Extended length steps may require that 
stair treads be butted together to create 
a uniform appearance. Prior to installing 
treads that are intended to be butted 
together, confirm material installation 
pattern per design specifications or work 
order, especially when installing profiled 
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 and seam. If possible, try to 
align seam in line with handrails or other 
fixtures in order to disguise the seam. 
Flexco stair treads have a an acceptable 
level of thickness variation from tread to 
tread. For this reason, stair treads that 
are intended to be butted together may 
need to be sanded, undercut, or shimmed 
in order match the thickness of adjacent 
treads. When butting patterned or profiled 
stair treads, treads should be trimmed so 
that the center of the pattern or profile is 
at the seam.
Butting stair tread installations require 
more preparation than standard stair 
tread installation. If stair treads need to 
be immediately accessible, The Excelsior 
TP-620 should be used to install treads.
8.   INITIAL MAINTENANCE
Ensure that adhesive has cured for 
recommended period of time prior to 
conducting initial maintenance. Remove 
any protective coverings prior to cleaning. 
Sweep, dust mop and/or vacuum stair 
treads to remove any dirt, dust or debris. 
Mix 2-4 ounces of Excelsior All Purpose 
Cleaner per gallon of clean, potable water. 
Use a clean mop to apply cleaning solution 
to floor and let stand for 5-10 minutes. 
Use a 22 gauge soft bristled deck brush to 
scrub stair treads in order to remove dirt, 
debris and any remaining mold release 
chemicals. If stair treads is heavily soiled, 
additional cleaning may be required.
Use a wet vacuum or clean mop to remove 
any and all excess cleaning solution. Rinse 
area with clean, cool water and allow floor 
to dry entirely. 
Do not use detergents, abrasive cleaners 
or “mop and shine” type products, as they 
will dull the finish and sheen of the stair 
treads material. Do not use vacuums that 
have a beater bar or electric brooms with 
hard plastic bottoms or no padding, as 
this may cause discoloration, scratching 
and loss of sheen.
Installation areas that will be difficult 
to maintain or will not receive routine 
maintenance with a scrub brush, such 
as residential applications, must have a 
compatible floor finish installed, such as 
the Excelsior MF-940 or GF-950, in order 
to ease maintenance of the floor covering. 
For further information regarding daily or 
routine maintenance, please consult the 
product care & maintenance document 
AW-510 Acrylic Wet-Set
Light Foot Traffic:
 Heavy / Rolling Traffic:
Maintenance:
24 Hours
48 Hours
72 Hours
EN-610 Epoxy Wet-Set
Foot Traffic:
Heavy / Rolling Traffic:
Maintenance:
8-12 Hours
24 Hours
48 Hours
TP-620 Pressure Sensitive Tape
Foot Traffic:
Heavy / Rolling Traffic:
Maintenance:
Immediate
Immediate
Immediate
C-630 Contact Adhesive
Foot Traffic:
Heavy / Rolling Traffic:
Maintenance:
Immediate
Immediate
72 Hours
MS-700 Modified Silane
Foot Traffic:
Heavy / Rolling Traffic:
Maintenance:
8-12 Hours
24-48 Hours
48 Hours
EW-710 Epoxy Wet-Set
Foot Traffic:
Heavy / Rolling Traffic:
Maintenance:
8-12 Hours
24-48 Hours
48 Hours
Adhesive Traffic Limits








