Page 122 - Polycoat 1.1 Table of Contents

TECHNICAL DATA SHEET | Section 6.5
PC-235 / 235SC
Elastomeric, Aromatic, Polyurethane Base Membrane

Product Description
PC-235/235SC is a single component, liquid applied, moisture Technical Data (Based on Draw Down Film)
cured, aromatic polyurethane elastomeric waterproofing base
membrane. Make sure to use the correct grade of product PC-235 PC-235SC
which complies with VOC regulations/requirements applicable
as per federal, state, statutory, counties, cities and local bodies Coverage Rate 1 gal/100 sqft 1 gal/100 sqft
at the place of installation. 0.41 l/sqm 0.41 l/sqm
Features Dry Film Thickness 12 ± 2 mils 13 ± 2 mils
per Coat 305 ± 50 330 ± 50
• Economical microns microns
• Moisture Cured
Hardness, ASTM D2240 70 ± 5 Shore A 70 ± 5 Shore A
• Seamless Waterproofing Membrane
Tear Resistance, Die C, 200 ± 25 pli 200 ± 20 pli
Typical Uses ASTM D624 35 ± 4.4 kN/m 35 ± 4.4 kN/m
• Concrete
• Masonry Surfaces Tensile Strength, 1200 ± 100 psi 1200 ± 300 psi
• Metal ASTM D412 8.3 ± 0.7 MPa 8.3 ± 0.7 MPa
• Plywood
• Wood Ultimate Elongation, 500 ± 50% 475 ± 50%
ASTM D412
Packaging
Specific Gravity 1.29 ± 0.1 cps 1.32 ± 0.1 cps
5-Gallon One 5 gallon pail (18.9 liters)
Total Solids by Weight, 85 ± 2% 85 ± 2%
55-Gallon drum Net fill 50 gallons (189 liters) ASTM D2369

Total Solids by Volume, 76 ± 2% 81 ± 2%
Color ASTM D2697
Grey or Tan. Not a stock item. Minimum order of 250 gallons
(945 liters) is required. Viscosity at 75°F (24°C) 5000 ± 2500 5000 ± 2500
cps
cps
Surface Preparation
Refer to General Guidelines for complete information. Volatile Organic
Compounds, ASTM 1.67 lb/gal 0.75 lb/gal
Mixing D2369-81 200 gm/liter 91 gm/liter
Before application, mix PC-235/235SC using a mechanical
mixer at slow speed thoroughly until a homogeneous mixture
and color is attained. Use care not to allow the entrapment of
air into the mixture. Do not mix in an up and down motion. sand, preferably by vacuum.
Application Most applications require one or two coats. Please reference
For best results apply using a spray, squeegee, notched trowel. gallons required in the desired system sheet. To obtain proper
A phenolic resin core roller may be used but extra care should adhesion between coats, it is imperative that recoating be
be taken not to trap air which may result in bubbles. done within 48 hours.
Requires a continuous coating application to minimize lines Curing
and/or streaking. At 75°F (24°C) and 50% relative humidity, allow coating to cure
16 hours before proceeding to subsequent coats. Cure time
It is recommended to apply an aggregate of washed, dry,
rounded sand, approximately 16 or 20 mesh (0.84-1.19 mm), will vary depending on temperature and humidity. If more
6.5+ Mohs minimum hardness at a rate of 20 lbs/100 sqft (1 than 48 hours passes between coats, re-prime the surface
®
kg/sqm) or as required to achieve a slip-resistant finish, into with Polyprime U before proceeding.
the wet second coat, covering it completely. Broadcast sand If accelerated curing is required, add one quart of PC-50 in
until refusal and when the coating is dry, remove extra loose a 5 gallon pail of PC-235/235SC and mix thoroughly. This

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