Page 128 - Polycoat 1.1 Table of Contents

TECHNICAL DATA SHEET | Section 6.8
PC-440 / 440SC
ICC-ES Evaluated Base Membrane
For Class A/B Fire Rated System

Product Description
PC-440/440SC is a single component, liquid applied, moisture- Technical Data (Based on Draw Down Film)
cured, aromatic polyurethane elastomeric waterproofing base
membrane, designed for use in most areas of California to PC-440 PC-440SC
be in compliance with air quality standards. Make sure to
use the correct grade of product which complies with VOC
regulations/requirements applicable as per federal, state, Coverage Rate 1 gal/100 sqft 1 gal/100 sqft
statutory, counties, cities and local bodies at the place of 0.41 l/sqm 0.14 l/sqm
installation.
Dry Film Thickness 11 ± 2 mils 14 ± 1 mils
Features per Coat 279 ± 50 355 ± 50
microns
microns
• Economical
• Moisture Cured Hardness, 55 ± 5 Shore A 55 ± 5 Shore A
• Seamless Waterproofing Membrane ASTM D2240

Tear Resistance, 170 ± 25 pli 120 ± 25 pli
Typical Uses Die C, ASTM D624 28.9 ± 4.4 kN/m 21.0 ± 4.4 kN/m
• Concrete
• Masonry Surfaces Tensile Strength, 800 ± 100 psi 500 ± 100psi
• Metal ASTM D412 5.5 ± 0.7 MPa 3.4 ± 0.7 MPa
• Plywood
• Wood Ultimate Elongation, 500 ± 50% 400 ± 50%
ASTM D412
Packaging Specific Gravity 1.26 ± 0.1 1.30 ± 0.1

5-Gallon 5 gallon (18.9 liters) pail Total Solids by 81 ± 2% 92.7 ± 2%
Weight,
55-Gallon 55 gallon drum, net fill 50 ASTM D2369
gallons (189 liters)
Total Solids by 71 ± 2% 87.7 ± 2%
Volume,
Color ASTM D2697
Grey or Tan
Surface Preparation Viscosity at 75°F 6500 ± 2000 cps 6500 ± 2000 cps
Refer to General Guidelines for complete information. (24°C)
Mixing
Before application, mix PC-440/440SC using a mechanical Volatile Organic 2.01 lb/gal 0.78 lb/gal
mixer at slow speed. Mix PC-440/440SC thoroughly until a Compounds, 240 gm/liters 94 gm/liters
homogeneous mixture and color is attained. Use care not to ASTM D2369-81
allow the entrapment of air into the mixture. Do not mix in
an up and down motion.
Application
For best results, use a squeegee or notched trowel. A phenolic between coats, it is imperative that recoating be done within
resin core roller may be used but extra care should be taken not 48 hours. If re-coat window has passed, then solvent wipe
to trap air which may result in bubbles. Requires a continuous the surface with VOC-compliant solvent and re-prime with
coating application to minimize lines and/or streaking. Polyprime U.
®
It is recommended to apply an aggregate of washed, dry,
rounded sand, approximately 16 or 20 mesh (0.84-1.19 mm), Curing
6.5+ Mohs minimum hardness at a rate of 20 lbs/100 sqft (1 At 75°F (24°C) and 50% relative humidity, allow coating to cure
kg/sqm) or as required to achieve a slip-resistant finish, into 16 hours before proceeding to subsequent coats. Cure time
the wet second coat, covering it completely. Broadcast sand will vary depending on temperature and humidity. If more
until refusal and when the coating is dry, remove extra loose than 48 hours passes between coats, reprime the surface with
®
sand, preferably by vacuum. Polyprime U before proceeding.
Most applications require two coats. To obtain proper adhesion If accelerated curing is required, add one quart of PC-50 in

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