Installation Instructions

6
REGULAR RUBBER STAIR TREAD AND RISER
INSTALLATION (cont)
If the substrate is nonporous:
• Ensure substrate surface has been prepared
properly
• Backside of treads must be sanded in all
nonporous applications. Not sanding voids
warranty.
• Spread VPI 503 adhesive on tread and nose,
using specified trowel, leaving between ½” to ¾”
free of adhesive at the nose for application of nose
caulk. Allow the adhesive to dry to the touch.
When you run your fingers across the trowel
ridges, the ridges should be pliable with moderate
finger pressure. From the time the adhesive is dry
to the touch there are approximately 45 minutes to
lay the stair tread into position. Do not allow the
adhesive to dry too long as loss of adhesion
strength may occur!
• Apply NC-2 Epoxy Nose Caulk to the inside of the
tread nose and on the face of the step edge to
adequately fill the void. Cut the mixing nozzle to
an inside diameter of 3/8”. Do Not Remove the
internal mixer. Remove the end cap and attach
the mixing nozzle with the retaining nut to the
cartridge. Purge the mixing nozzle before each
use with approximately 1” to 2” of compound,
dispose of the purge material. The filler is ready
for use. Coverage will be approximately 25 linear
feet with a 3/8” bead. Cartridges with remaining
compound may be reused again by replacing the
mixing nozzle at the time of your next use.
• Apply enough caulk inside the tread nose so when
the nosing is pressed into place the compound will
conform to the step edge & achieve 100% contact
between the nosing area and the step edge.
Leave ½” along each side of the tread free of any
compound. The NC-2 needs to be positioned
within 30 minutes of applying to the nose. Note
higher AMBIENT temperatures will result in the
adhesive curing faster, shortening the 30 minutes.
• Thoroughly roll the tread with a Gundlach Airway
#222 hand roller, being careful to not roll the edge
of the nose where the compound has been
applied. Rolling the nose will displace the
compound and reduce the compound’s
performance.
• Wipe up spills with mineral spirits and clean cloths
before any adhesive or compound sets up.
STAIR WELL MAINTENANCE
SMART STEP INTREGRATED 1 PIECE &
REGULAR RUBBER STAIR TREAD MAINTENANCE
NOTE: Treads become slippery when wet and care must
be taken. Appropriate barriers to wet areas and
“warning / caution” placards should be used in all
instances.
• Allow the adhesive on the installed treads to
thoroughly dry, about 24 – 48 hours, before
completing the initial maintenance.
• Treads are maintained by hand.
• Damp mop or dust mop to remove dust and
debris.
• Clean excessive dirt from the tread using a neutral
cleaner. Use instructions on the bottle of cleaner
for mixing. Let the cleaner work for 5 – 10
minutes. Scrub with a soft brush while still wet.
• Wipe up any excess cleaner with a dry cloth per
instructions.
• It is not necessary to apply a finish to the stair
treads. If a finish is desired, clean with denatured
alcohol, allow treads to dry and apply coating per
manufacturer’s instructions
• Clean treads as conditions and soiling dictate.
Any questions about surface preparation, sub-floor conditions or general installation questions or
maintenance not covered in these instructions, please contact VPI.
VPI Corporation, 3123 S.9th Street, PO Box 451, Sheboygan, Wisconsin 53082-0451 U.S.A.
Phone: [phone] – Fax: [phone] - Customer Service: [phone]
Email: [e-mail] Website: www.vpiflooring.com