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TECHNICAL DATA SHEET | Section 6.10
PC-550SC
Water Catalyzed, Polyurethane,
Polyurea Elastomeric Base Membrane

Product Description
PC-550SC is a single component, water catalyzed polyurethane Technical Data (Based on Draw Down Film)
polyurea, liquid applied elastomeric waterproofing base
membrane. Coverage Rate 1 gal/100 sqft
0.41 l/sqm
Features
• Can Be Applied At Any Thickness Dry Film Thickness per 15 ± 2 mils
• Fast Curing Coat 350 ± 50 microns
• Non-Gassing
• Seamless Membrane Hardness, ASTM D2240 55 ± 5 Shore A
• Water Catalyzed
Tear Resistance, Die C, 210 ± 25 pli
ASTM D624 36.8 ± 3.5 kN/m
Typical Uses
• Concrete Tensile Strength, 1000 ± 100 psi
• Helicopter Pads ASTM D412 6.9 ± 0.7 MPa
• Masonry
• Metal Ultimate Elongation, 500 ± 50%
• Parking Decks ASTM D412
• Pedestrian Membrane
• Plywood Specific Gravity 1.08 ± 0.1
• Ship Decks
• Under Tile Total Solids by Weight, 93 ± 2%
ASTM D2369
Packaging
Total Solids by Volume, 91 ± 2%
5-Gallon 5 gallon (18.9 liter) pail with ASTM D2697
1 vial of Catalyst
Viscosity at 75°F (24°C) 3000 ± 2000 cps

Volatile Organic
Compounds, <0.61 lb/gal
Color ASTM D2369-81 <74 gm/liters
Grey, Tan or Custom Color
Not a stock item. Minimum order of 250 gallons (945 liters)
is required. See color chart for special provisions. Contact
Polycoat Products for more information.
Surface Preparation and/or streaking. Concrete, metal and old plywood surfaces
Refer to General Guidelines for complete information. should be primed. For best results, use a squeegee or a
notched trowel.
Mixing
Before application, mix PC-550SC using a mechanical mixer at An aggregate of 14-30 rubber granules may be broadcast
into the PC-550SC membrane at a rate of 10 lbs/100 sqft or
slow speed. Add PC-550SC Catalyst and mix thoroughly until (1/2 kg/sqm)or to refusal. The amount of rubber used will
a homogenous mixture is attained. Use care not to allow the vary. When coating starts to gel in approximately 20 to
entrapment of air into the mixture. Do not mix in an up and 30 minutes, broadcast 14-30 mesh (0.56-1.41 mm) rubber
down motion.
granules until refusal. The quantity amount of rubber granules
Mix PC-550SC with water (water must be added) at a ratio will vary (Normal usage is 20 lbs/100 sqft or 1 kg/sqm) When
of one quart of water to one gallon of PC-550SC. The mixing the coated surface is stiff enough to support the weight of
ratio is 4 parts PC-550SC to 1 part of water (4:1). installer without damaging the coating or when the coating
Application is dry (approximately 4-6 hours), remove all loose aggregate,
preferably by vacuum.
For best results, use a squeegee or notched trowel. A phenolic
resin core roller may be used but extra care should be taken A sand aggregate may also be used. Sand aggregate should be
not to trap air which may result in bubbles. applied only in second coat. Broadcast sand until refusal and
when the coating is dry, remove extra loose sand, preferably
Requires a continuous coating application to minimize lines
by vacuum.

POLYCOAT PRODUCTS TEL 562.802.8834 | FAX 562.921.7363 Section 6.10
wpsales@polycoatusa.com | www.polycoatusa.com