Technical Specifications

3. ADHESIVES:
3.1. VPI 503 Acrylic Adhesive
VPI 503 is a solvent free, one part acrylic wet set adhesive approved for all types of sub-floors on
or above grade. The adhesive is good for porous and non-porous areas.
Substrate requirements are MVER<6lbs, RH ≤85%, pH of 7 – 11.
Trowel type: 1/16” x 1/16” Square Notched Trowel.
Coverage: 125 – 150 feet of Square or Round nose treads per gallon, depending on porosity of
substrate, application style and environment. In applications demonstrating spread rates that are
less than 90 ft2, additional adhesive should be purchased as required. See label for detailed
application instructions.
3.2. VPI NC-2 Nose Caulk
VPI NC-2 is a solvent-free, two-component Epoxy Nose-Caulking Compound designed for use
with vinyl & rubber stair treads. It’s a non-flammable, high-performance epoxy adhesive,
recommended for indoor stair installations over porous and non-porous substrates. It is
recommended for nosing, providing support to the nose of the square vinyl stair treads. Stairs
(substrate) must be structurally sound, dry, clean and free of dirt, dust, grease, paint, curing
compounds, sealers, or any other extraneous material which may interfere or compromise
adhesion. Application over concrete stairs requires the concrete to be fully cured and dry.
Adequate adhesive must be applied to the corner of the stair tread nose so that when placed into
position all voids are filled. See Nose-Caulk label for detailed application instructions.
4. ENVIRONMENTAL STANDARDS
4.1 Contributes towards LEED Credit V4 option 2 Low emitting materials, indoor environmental
quality, FloorScore Certification, CHPS 2.2.3; Flooring Systems
4.2. CALGreen, CA Code of Regulations title 24, Part II,2010, Sections 4.504.4/5.504.4.6:
Resilient Flooring Systems
4.3. ANSI/ASHRAE/USGBC/IES Standard 189.1-2009,Section 8.4.2.3: Floor Covering
Materials
4.4. Collaborative for High Performance Schools(CHPS) rating system, 2009 Criteria EQ2.2.3:
Flooring Systems
4.5. Green Guide for Healthcare, V2.2, 2007, EQ Credit 4.3: LEM-Flooring Systems