Industra-Coat 3520 Water Based Low Gloss Urethane Topcoat
320-500 square feet per gallon when applied at 3-5 mils wet thickness
Recommended for concrete floors and counter tops, auto service centers, warehouses, computer rooms, laboratories, aircraft hangers, cafeterias and chemical exposure areas.
INDUSTRA-COAT #3520 is a two component low-gloss aliphatic polyurethane water based floor sealer that exhibits excellent characteristics for abrasion resistance, chemical resistance, flexibility, weathering, and UV stability.
CURE SCHEDULE (70°F):
pot life (150 gram mass): Minimum 1 hour
tack free (dry to touch): 7-9 hours
recoat or topcoat: 8-12 hours
light foot traffic: 24 hours
full cure (heavy traffic): 3-5 days
APPLICATION TEMPERATURE: 60-90 degrees F with relative humidity between 50% and 90%.
MIX RATIO: 2 parts A to 1 part B by volume
SHELF LIFE: 90 days in unopened containers
FINISH CHARACTERISTICS: low-gloss (<20 at 60 degrees @ glossmeter)
IMPACT RESISTANCE: Gardner Impact, direct & reverse=160 in lb (passed)
ABRASION RESISTANCE: Taber abrasor CS-17 calibrase wheel with 1000 gram total load and 500 cycles= 23.0 mg loss
ADHESION: >300 psi @ elcometer (concrete failure, no delamination) over suitable primer
VISCOSITY: Mixed= 450-650 cps (typical)
FLEXIBILITY: No cracks on a 1/8" mandrel