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completely. If old concrete has a surface that has deteriorated ALL OTHER SURFACES
to an unacceptably rough surface, Polycoat Products PC-260 An adhesion test is recommended prior to starting the project.
or a mixture of Polyprime 21 and sand should be used as a Mixing
repair agent for cracks, spalls, bug holes and voids. Upon full ®
cure of the repair agent, prime the entire surface intended Polyeuro MH-651FR may not be diluted under any circum-
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for coating. stances. Thoroughly mix Polyeuro MH-651FR Side-A and
Side-B with air driven power equipment until a homogeneous
CONCRETE SURFACE PREPARATION REFERENCE mixture and color is obtained.
ASTM D4258 - Standard practice for cleaning concrete. Application
ASTM D4259 - Standard practice for abrading concrete. Both Side-A and Side-B materials should be preconditioned
ASTM D4260 - Standard practice for etching concrete. to 90-100°F (32-37°C) before application.
ASTM F1869 - Standard test method for measuring moisture vapor
emission rate of concrete. Both Side-A and Side-B materials should continuously be
ICRI 03732 - Concrete surface preparation. agitated before and during application. Agitate at least one
WOOD hour prior to application using heavy duty drum agitator.
All wood should be clean, dry and free of any knots, splinters, Both Side-A and Side-B lines must have filters removed.
oil, grease or other contaminants. Splintered or rough areas
should be sanded. Knots should be repaired using Polycoat Use a round pattern disc for spraying. Orifice diameter must
Products PC-260 with sand. Upon full cure of the repair agent, be 0.042” or greater.
prime the entire surface intended for coating. Recommended surface temperature must be at least 5°F (3°C)
above the dew point.
STEEL (ATMOSPHERIC AND IMMERSION EXPOSURE)
®
Remove all oil, grease, weld spatters and round off any sharp Polyeuro MH-651FR should be applied using a plural com-
edges from surface. Minimum surface preparation is Near ponent, heated, high pressure 1:1 spray mixing equipment
White Metal Blast Cleaning per SSPC-SP10/NACE 2. Optimum like Graco’s Reactor, Glass Craft or other equivalent machine
surface profile is 3-4 mils. Prime and shoot Polyeuro onto may be used.
®
any bare metal the same day as it is cleaned to minimize any Both Side-A and Side-B materials should be sprayed at a
potential flash rusting. minimum of 2000 psi and at temperatures above 150°F (66°C).
Adequate pressure and temperature should be maintained
GALVANIZED SURFACES at all times.
Clean and degrease any contaminated surfaces before
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priming. Do not blast galvanized surfaces with an abrasive Polyeuro MH-651FR should be sprayed in smooth, multi-
grit. An adhesion test is recommended prior to starting the directional passes to improve uniform thickness and ap-
project. pearance.
Storage
FIBERGLASS REINFORCED PLASTIC
®
The gel coat should be lightly blasted or sanded with 80 grit Polyeuro MH-651FR has a shelf life of one (1) year from date
sandpaper and cleaned. of manufacture in original, factory-sealed containers when
stored indoors at a temperature between 60-95°F (15-35°C).
PLASTIC FOAMS
Enhanced adhesion is obtained when the foam is mechanically Side-A and Side-B drums are recommended to be stored
abraded. When coating polystyrene, do not use a solvent- above 60°F (15°C). Avoid freezing temperatures.
based primer. Store drums on wooden pallets to avoid direct contact with
the ground. If stored for a long period of time, rotate Side-A
TEXTILES, CANVAS, FABRICS and Side-B drums regularly.
Adhesion to most fabrics, geothermal membranes and textiles
does not require a primer. Limitations
Do not open until ready to use.
STAINLESS STEEL
Stainless steel may be grit blasted and degreased before Both Side-A and Side-B containers must be fitted with a
priming. Contact Polycoat Products for recommended primer. desiccant device during use.
Some stainless steel alloys are so inert that it is not possible to Warning
achieve a satisfactory bond. An adhesion test is recommended
prior to starting the project. This product contains Isocyanates and Curative Material.

ALUMINUM
Aluminum should be blasted with aluminum oxide or sand,
and not with steel or metal grit. Excessive blasting may
result in a warped or deformed surface. After blasting, wash
aluminum with a commercially available aluminum cleaner.
Allow to dry, then prime. Contact Polycoat Products for
recommended primer.
NEW AND OLD CAST IRON
Blast with a steel grit and degrease before priming. Old cast
iron is difficult to prepare for a satisfactory bond. It can absorb
oil and water soluble contaminants that will keep returning
to the surface after the coating system has been applied
and affect the coating system adhesion. An adhesion test is
recommended prior to starting the project.

POLYCOAT PRODUCTS TEL 562.802.8834 | FAX 562.921.7363 Section 5.1
info@polycoatusa.com | www.polycoatusa.com