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CONCRETE SURFACE PREPARATION REFERENCE recommended primer.
ASTM D4258 - Standard practice for cleaning concrete.
ASTM D4259 - Standard practice for abrading concrete. NEW AND OLD CAST IRON
ASTM D4260 - Standard practice for etching concrete. Blast with a steel grit and degrease before priming. Old cast
ASTM F1869 - Standard test method for measuring moisture vapor iron is difficult to prepare for a satisfactory bond. It can absorb
emission rate of concrete. oil and water soluble contaminants that will keep returning
ICRI 03732 - Concrete surface preparation. to the surface after the coating system has been applied
and affect the coating system adhesion. An adhesion test is
WOOD recommended prior to starting the project.
All wood should be clean, dry and free of any knots, splinters,
oil, grease or other contaminants. Splintered or rough areas
should be sanded. Knots should be repaired using Polycoat ALL OTHER SURFACES
Products PC-260 with sand. Upon full cure of the repair agent, An adhesion test is recommended prior to starting the project.
prime the entire surface intended for coating. Mixing
Polyeuro MH-872 may not be diluted under any circum-
®
STEEL (ATMOSPHERIC AND IMMERSION EXPOSURE) ®
Remove all oil, grease, weld spatters and round off any sharp stances. Thoroughly mix Polyeuro MH-872 Side-B (Resin
edges from surface. Minimum surface preparation is Near side) with air driven power equipment until a homogeneous
White Metal Blast Cleaning per SSPC-SP10/NACE 2. Optimum mixture and color is obtained.
surface profile is 3-4 mils. Prime and shoot Polyeuro onto Application
®
any bare metal the same day as it is cleaned to minimize any Both Side-A and Side-B material should be preconditioned at
potential flash rusting. 80-90°F (27-32°C) before application.
Recommended surface temperature must be at least 5°F (3°C)
GALVANIZED SURFACES
Clean and degrease any contaminated surfaces before above the dew point.
priming. Do not blast galvanized surfaces with an abrasive Polyeuro MH-872 should be applied using a plural com-
®
grit. An adhesion test is recommended prior to starting the ponent, heated, high pressure 1:1 spray mixing equipment
project. like Graco’s Reactor, Glass Craft or other equivalent machine
may be used.
FIBERGLASS REINFORCED PLASTIC
The gel coat should be lightly blasted or sanded with 80 grit Both Side-A and Side-B materials should be sprayed at a
sandpaper and cleaned. minimum of 2000 psi and at temperatures above 150°F (66°C).
Adequate pressure and temperature should be maintained
PLASTIC FOAMS at all times.
Enhanced adhesion is obtained when the foam is mechanically ®
abraded. When coating polystyrene, do not use a solvent- Polyeuro MH-872 should be sprayed in smooth, multi-
based primer. directional passes to improve uniform thickness and ap-
pearance.
TEXTILES, CANVAS, FABRICS
Adhesion to most fabrics, geothermal membranes and textiles Storage
®
does not require a primer. Polyeuro MH-872 has a shelf life of one (1) year from date
of manufacture in original, factory-sealed containers when
STAINLESS STEEL stored indoors at a temperature between 60-95°F (15-35°C).
Stainless steel may be grit blasted and degreased before Side-A and Side-B drums are recommended to be stored
priming. Contact Polycoat Products for recommended primer. above 60°F (15°C).Avoid freezing temperatures.
Some stainless steel alloys are so inert that it is not possible to
achieve a satisfactory bond. An adhesion test is recommended Store drums on wooden pallets to avoid direct contact with
prior to starting the project. the ground. If stored for a long period of time, rotate Side-A
and Side-B drums regularly.
ALUMINUM
Aluminum should be blasted with aluminum oxide or sand, Limitations
and not with steel or metal grit. Excessive blasting may Do not open until ready to use. Both Side-A and Side-B
result in a warped or deformed surface. After blasting, wash containers must be fitted with a desiccant device during use.
aluminum with a commercially available aluminum cleaner. Warning: This product contains Isocyanates and Curative Material.
Allow to dry, then prime. Contact Polycoat Products for

Limited Warranty: Please read all information in the General Guidelines, Technical Data Sheets, Guide Specifications and Safety Data Sheets (SDS) before applying material. These products are for professional use only
and preferably applied by professionals who have prior experience with the Polycoat Products materials or have undergone training in application of Polycoat Products materials. Published technical data and instructions are
subject to change without notice. Contact your local Polycoat Products representative or visit our website for current technical data, instructions, and project specific recommendations.
Polycoat Products warrants its products to be free of manufacturing defects and that they will meet Polycoat Products’ current published physical properties. Seller’s and manufacturer’s sole responsibility shall be to
replace that portion of the product which proves to be defective. There are no other warranties by Polycoat Products of any nature whatsoever expressed or implied, including any warranty of merchantability or fitness for
a particular purpose in connection with this product. Polycoat Products shall not be liable for damages of any sort, including remote or consequential damages resulting from any claimed breach of any warranty whether
expressed or implied. Polycoat Products shall not be responsible for use of this product in a manner to infringe on any patent held by others. In addition, no warranty or guarantee is being issued with respect to appearance,
color, fading, chalking, staining, shrinkage, peeling, normal wear and tear or improper application by the applicator. Damage caused by abuse, neglect and lack of proper maintenance, acts of nature and/or physical movement
of the substrate or structural defects are also excluded from the limited warranty. Polycoat Products reserves the right to conduct performance tests on any material claimed to be defective prior to any repairs by owner,
general contractor, or applicator.
Disclaimer: All guidelines, recommendations, statements, and technical data contained herein are based on information and tests we believe to be reliable and correct, but accuracy and completeness of said tests are not
guaranteed and are not to be construed as a warranty, either expressed or implied. It is the user’s responsibility to satisfy himself, by his own information and test, to determine suitability of the product for his own intended use,
application and job situation and user assumes all risk and liability resulting from his use of the product. We do not suggest or guarantee that any hazard listed herein are the only ones which may exist. Neither seller nor manufacturer
shall be liable to the buyer or any third person for any injury, loss or damage directly or indirectly resulting from use of, or inability to use, the product. Recommendations or statements, whether in writing or oral, other than those
contained herein shall not be binding upon the manufacturer, unless in writing and signed by a corporate officer of the manufacturer. Technical and application information is provided for the purpose of establishing a general profile
of the material and proper application procedures. Test performance results were obtained in a controlled environment and Polycoat Products makes no claim that these tests or any other tests accurately represent all environments.
Polycoat Products is not responsible for typographical errors. © 2023 Polycoat Products. All rights reserved. Revision 20230807.JC

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