Page 88 - Polycoat 10.2 Technical Data Sheet Polycaulk 82

Estimating Formula: (1600 sqft per gal /Dry Mil Thickness) x not blast galvanized surfaces with an abrasive grit. An adhesion test
Solids Content = Application Rate per gallon. is recommended prior to starting the project.
Surface Preparation FIBERGLASS REINFORCED PLASTIC
In general, coating performance and adhesion are directly The gel coat should be lightly blasted or sanded with 80 grit sandpaper
proportional to surface preparation. Most failures in the and cleaned.
performance of surface coatings can be attributed to poor
surface preparation. Polyurea coatings rely on the structural PLASTIC FOAMS
strength of the substrate to which they are applied. All Enhanced adhesion is obtained when the foam is mechanically
surfaces must be free of dust, dirt, oil, grease, rust, corrosion and abraded. When coating polystyrene, do not use a solvent-based
other contaminants. When coating previously used substrates, it is primer.
important to consider the possibility of substrate absorption, which TEXTILES, CANVAS, FABRICS
may affect the adhesion of the coating system, regardless of the Adhesion to most fabrics, geothermal membranes and textiles
surface preparation. Polycoat recognizes the potential for unique does not require a primer.
substrates from one project to another. The following information is STAINLESS STEEL
for general reference. For project-specific questions, contact Polycoat.
Stainless steel may be grit blasted and degreased before priming.
CARBON STEEL Some stainless steel alloys are so inert that it is not possible to achieve
Exterior coating: Abrasive Blast to SSSP, SP-10 (Near- white) with a a satisfactory bond. An adhesion test is recommended prior to starting
surface profile of 1.2 - 2.2 mils. the project.
Internal Lining: Abrasive Blast to SSSP-SP-5 (White metal)with a NEW AND OLD CAST IRON
surface profile of 2.2 -3 .2 mils. Remove all dust, etc. on all surfaces Blast with a steel grit and degrease before priming. Old cast iron
intended for coating, prior to application. is difficult to prepare for a satisfactory bond. It can absorb oil and
water soluble contaminants that will keep returning to the surface
NEW AND OLD CONCRETE after the coating system has been applied and affect the coating
Refer to SSPC-SP13/NACE 6, or ICRI 03732: CSP 3-5. New concrete system adhesion. An adhesion test is recommended prior to
must be cured for 28 days prior to product application. Surface must starting the project.
be clean, dry, sound and offer sufficient profile for product adhesion. ALL OTHER SURFACES
Remove all dust, dirt, oil, form release agents, curing compounds, An adhesion test is recommended prior to starting the project.
salts, efflorescence, laitance and other foreign matter by shotblasting
and/or suitable chemical means, in accordance with local chemical Mixing
regulations. Rinse thoroughly, to achieve a pH between 8.0 and Polycoat Tuffshield 801 may not be diluted under any
11.0. Allow to dry completely. If old concrete has a surface that has circumstances. Thoroughly mix Polycoat Tuffshield 801
deteriorated to an unacceptably rough surface, Polycoat Products Side-B (Resin side) with air driven power equipment until a
PC-260 or a mixture of Polyprime 21 and sand should be used as a homogeneous mixture and color is obtained.
repair agent for cracks, spalls, bug holes and voids. Upon full cure
of the repair agent, prime the entire surface intended for coating. Application
Concrete Surface Preparation Reference: Both Side-A and Side-B materials should be preconditioned to
75-85°F (24-27°C) before application. Recommended surface
ASTM D4258 - Standard practice for cleaning concrete temperature must be at least 5°F (3°C) above the dew point.
ASTM D4259 - Standard practice for abrading concrete Polycoat Tuffshield 801 should be applied using a plural
ASTM D4260 - Standard practice for etching concrete component, heated, high pressure 1:1 spray mixing equipment
ASTM F1869 - Standard test method for measuring moisture vapor like Graco’s Reactor, Glass Craft or other equivalent machine
emission rate of concrete may be used. Both Side-A and Side-B materials should be
ICRI 03732 - Concrete surface preparation sprayed at a minimum of 2000 psi and at temperatures above
WOOD 150°F (66°C). Adequate pressure and temperature should
All wood should be clean, dry and free of any knots, splinters, oil, be maintained at all times. Polycoat Tuffshield 801 should
grease or other contaminants. Splintered or rough areas should be be sprayed in smooth, multidirectional passes to improve
sanded. Knots should be repaired using Polycoat Products PC-260 uniform thickness and appearance.
with sand. Upon full cure of the repair agent, prime the entire surface
intended for coating. Storage
Polycoat Tuffshield 801 has a shelf life of one (1) year from date
STEEL (ATMOSPHERIC AND IMMERSION EXPOSURE) of manufacture in original, factory-sealed containers when
Remove all oil, grease, weld spatters and round off any sharp edges stored indoors at a temperature between 60-95°F (15-35°C).
from surface. Minimum surface preparation is Near White Metal Blast Side-A and Side-B drums are recommended to be stored
Cleaning per SSPC-SP10/NACE 2. Optimum surface profile is 2-3 mils. above 60°F (15°C). Avoid freezing temperatures.
Prime and shoot Tuffshield 801 on to any bare metal the same day
as it is cleaned to minimize any potential flash rusting. Aluminum: Store drums on wooden pallets to avoid direct contact with
Aluminum should be blasted with aluminum oxide or sand, and not the ground. If stored for a long period of time, rotate Side-A
with steel or metal grit. Excessive blasting may result in a warped and Side-B drums regularly.
or deformed surface. After blasting, wash aluminum with a commer- Limitations
cially available aluminum cleaner. Allow to dry, then prime. Do not open until ready to use. Both Side-A and Side-B
containers must be fitted with a desiccant device during use.
BRASS AND COPPER
Brass and copper should be blasted with sand, and not with steel WARNING
or metal grit. Remove all dust and grease prior to applying primer. This product contains isocyanates and curative material.
GALVANIZED SURFACES
Clean and degrease any contaminated surfaces before priming. Do

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