Warranty

Roppe Rubber Stair Treads
Raised and Smooth Profiles
Product Data
Section 9
Resilient Flooring
Page 18 of 21 | © Roppe Corporation, Printed in the U.S.A.
must be installed with ROP435 Two-Part Epoxy with a minimum of six (6”) inches of epoxy
applied on either side of the seam and stair tread nosing to ensure the seams integrity. The
remaining portion of the stair tread can be installed with ROP360 or the specifically
recommended Roppe Adhesive depending on the substrate and stair tread type. Butting Stair
Treads: Roppe stair treads are not recommended for end butting, unless specifically ordered.
Spread coverage using the 1/32” x 1/16” x 1/32” “U”- notch trowel is approximately 185-245
square feet (Part A & B Mixed) per US gallon. Coverage will vary according to the type of
surface, surface texture, spreading angle, and adhesive temperature. Note: Over extremely
porous or rough concrete, a 1/16”x 1/16” x 1/16” Square notch trowel may be required (125 -
185 sq/ft/gal). DO NOT mix partial units of this adhesive, because the ratio of Part A to Part B is
not 1:1. ROP435 Epoxy Adhesive is packaged in two separate containers marked Part A
(Urethane epoxy resin) and Part B (polyamide resin, hardener). Remove the lids and add all of
Part B into Part A. Mix the combined parts with the furnished paddle using a rotary motion while
at the same time lifting from the bottom. A slow speed, 200 RPM maximum, drill with an
attached mixing paddle may also be used. Mix 4 minutes. After mixing, there should be no
streaking. Caution: Higher mixing speeds and/or longer mixing time will reduce the open time
and can cause premature curing of the adhesive. Adhesive will not cure if not properly mixed.
DO NOT allow the mixed epoxy adhesive to stand in the container. Immediately after mixing,
pour the contents onto the porous substrate and immediately spread the adhesive evenly using
the recommended trowel. Caution: If to much adhesive is applied, oozing at seams, air-bubbles
and telegraphing may occur along with adhesive displacement when the tread is rolled or
subjected to rolling loads resulting in loose or unsightly areas. If the substrate has been shot
blasted, or rough/porous underlayment has been applied, or the substrate is extremely porous,
additional adhesive may have to be purchased to ensure proper adhesive coverage. Caution:
Spreading adhesive on a large number of steps and treads could possibly allow the adhesives
to cure or setup before the treads are installed which would result in a bond failure. Caution:
Allowing the adhesive to remain open too long will result in bond failure. When installing stair
treads, use a kneeling board, or for best results, work off the stair treads whenever possible to
avoid shifting and to also not track the epoxy adhesive onto the flooring or stair treads. To
secure the stair treads vertical nosing to the rubber riser, ROPECC Epoxy Caulking Compound
must be applied in a tight serpentine bead pattern covering the entire width and length of the
stair treads nosing. Use ROP535U (required over metal) or ROP435 when installing over non-
porous substrates. Secure stair tread nosing with Painters Tape until ROPECC Epoxy Caulking
has dried. Remove Painters Tape before exposing to traffic. For stair treads, risers and
ROPECC Epoxy Caulking Compound installation instructions, warnings and cautions, refer to
section 6.4.1.
Read all of the product and safety information concerning the adhesive and any other chemicals
or cleaning agents prior to installation.
Roppe 435 Solvent Free Epoxy Flooring Adhesive Calculated VOC’s according to California
Rule #1168: ROP 435 Part A: 10 grams per liter of coating. ROP 435 Part B: 49 grams per liter
of coating.