Installation Guide

Roppe Rubber Stair Treads
Raised and Smooth Profiles
Product Data
Section 9
Resilient Flooring
Page 16 of 21 | © Roppe Corporation, Printed in the U.S.A.
remain in the mixing container since the chemical reaction will be hastened, causing the
adhesive to prematurely cure or set up which would render the adhesive unusable. Immediately
after mixing, pour the epoxy adhesive on cardboard or similar material and apply the adhesive
to the tread nose before the epoxy sets up. Whether using a spatula or dual cartridge applicator,
apply a ½” bead of ROPECC Epoxy Caulking Compound to the inner radius of the tread nose
so that all voids are filled when the tread is placed into position. 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. Do
not use ROPECC over metal, ROP535U must be used, or Quik-Stik Adhesive Tape. Secure
stair treads nosing with Painters Tape until ROPECC Epoxy Caulking Compound or ROP535U
has dried. Remove Painters Tape before exposing to traffic. If utilizing ROPECC dual cartridges,
simply remove cap and insert the special mixing and applicator tip. Caution: When applying
ROPECC Epoxy Caulking Compound (nose filler) in cartridges, the first six inches (6”) of
unmixed material from each cartridge must be discarded to prevent bond failure and oozing of
unmixed material down the face of the riser! Only use the recommend ROPECC Epoxy
Caulking Gun to apply ROPECC Epoxy Caulking Compound. Notice: The use ROPECC Epoxy
Caulking Compound’s dual-cartridge and disposable mixing nozzle with Roppe’s recommended
applicator gun is recommended so that the premature curing or non-curing of the epoxy prior to
application to the nose is virtually eliminated. When cartridges are utilized, no additional mixing
is necessary, since all the mixing is done within the special applicator nozzle. Any remaining
epoxy in the cartridge, that is not used, can be saved for use at a later date by removing the
disposable nozzle and capping the cartridge. Caution: The nose caulking is not to be buttered
on the step or riser. This is extremely important on treads with adjustable noses. After the
adhesive and nose caulking have been applied, place the tread nose onto the step nose using
even pressure. The nose of the tread is to fit tightly against the nose of the step. Place the
remaining portion of the tread into the adhesive on the step. After the first square nose stair
tread has been put into place, remove the tread and inspect the step nose for adequate
adhesive transfer to ensure that ROPECC is sufficient to fill all voids and irregularities along the
step nosing. Remove tread and inspect the steps nose for adequate ROPECC transfer is
sufficient to fill all voids and irregularities. If there are missing or light spots of ROPECC along
the step nosing, increase the amount of nose caulking until all voids are filled. Replace the first
tread after applying additional nose caulking in the inner radius of tread nose. If all step nosings
have the same wear, the same amount of nose caulking should be used on the remaining
treads. Forcing incorrectly sized treads into smaller areas will cause buckling of the tread and/or
the tread nose to protrude beyond the step nosing, which will result in nose cracking. Work off
the treads to avoid shifting and to also not track adhesive onto the surface of the treads.
Caution: DO NOT kneel on or against the tread nosings. Immediately remove excessive wet
adhesive with a clean white cloth and denatured alcohol (always follow manufacturer’s
recommendations, cautions and warnings etc.) . Follow the recommended safety practices.
Periodically, lift the tread to check for proper adhesive transfer. There should be at least 100%
coverage of stair tread adhesive on the back of the tread and 100% coverage of ROPECC
Epoxy Caulking Compound in the treads nosing. Observe the stair tread adhesive and the
epoxy nose caulking adhesive to ensure that the adhesives have not surpassed their open time
and have not begun to cure. Roll and cross roll each tread against the step substrate with a J-