Page 91 - Polycoat 10.2 Technical Data Sheet Polycaulk 82

Coverage Brass and copper should be blasted with sand, and not with steel
Polycoat Tuffshield II HAR may be applied at any rate to or metal grit. Remove all dust and grease prior to applying primer.
achieve desired thickness. Theoretical coverage for 1 mil (0.254 Galvanized Surfaces:
microns) thickness is one gallon per 1600 sqft (3.78 liters per Clean and degrease any contaminated surfaces before priming. Do
149 sqm). not blast galvanized surfaces with an abrasive grit. An adhesion test
Estimating Formula: (1600 sqft per gal /Dry Mil Thickness) x is recommended prior to starting the project.
Solids Content = Application Rate per gallon. FIBERGLASS REINFORCED PLASTIC
Surface Preparation The gel coat should be lightly blasted or sanded with 80 grit
In general, coating performance and adhesion are directly sandpaper and cleaned.
proportional to surface preparation. Most failures in the PLASTIC FOAMS
performance of surface coatings can be attributed to poor Enhanced adhesion is obtained when the foam is mechanically
surface preparation. Polyurea coatings rely on the structural abraded. When coating polystyrene, do not use a solvent-based
strength of the substrate to which they are applied. All primer.
surfaces must be free of dust, dirt, oil, grease, rust, corrosion and TEXTILES, CANVAS, FABRICS
other contaminants. When coating previously used substrates, it is Adhesion to most fabrics, geothermal membranes and textiles does
important to consider the possibility of substrate absorption, which not require a primer.
may affect the adhesion of the coating system, regardless of the
surface preparation. Polycoat recognizes the potential for unique STAINLESS STEEL
substrates from one project to another. The following information is Stainless steel may be grit blasted and degreased before priming.
for general reference. For project-specific questions, contact Polycoat. Some stainless steel alloys are so inert that it is not possible to achieve
a satisfactory bond. An adhesion test is recommended prior to starting
CARBON STEEL the project.
A. Exterior coating: Abrasive Blast to SSSP, SP-10 (Near- white) with
a surface profile of 1.2 - 2.2 mils. NEW AND OLD CAST IRON
B. Internal Lining: Abrasive Blast to SSSP-SP-5 (White metal)with a Blast with a steel grit and degrease before priming. Old cast iron
surface profile of 2.2 -3 .2 mils. Remove all dust, etc. on all surfaces is difficult to prepare for a satisfactory bond. It can absorb oil and
intended for coating, prior to application. water soluble contaminants that will keep returning to the surface
after the coating system has been applied and affect the coating
NEW AND OLD CONCRETE system adhesion. An adhesion test is recommended prior to starting
Refer to SSPC-SP13/NACE 6, or ICRI 03732: CSP 3-5. New concrete the project.
must be cured for 28 days prior to product application. Surface must
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 Mixing
and/or suitable chemical means, in accordance with local chemical Polycoat Tuffshield II HAR may not be diluted under any
regulations. Rinse thoroughly, to achieve a pH between 8.0 and circumstances. Thoroughly mix Polycoat Tuffshield II HAR
11.0. Allow to dry completely. If old concrete has a surface that has Side-B (Resin side) with air driven power equipment until a
deteriorated to an unacceptably rough surface, Polycoat Products homogeneous mixture and color is obtained.
PC-260 or a mixture of Polyprime 21 and sand should be used as a
repair agent for cracks, spalls, bug holes and voids. Upon full cure Application
of the repair agent, prime the entire surface intended for coating. Both Side-A and Side-B materials should be preconditioned to
Concrete Surface Preparation Reference: 75-85°F (24-27°C) before application. Recommended surface
temperature must be at least 5°F (3°C) above the dew point.
ASTM D4258 - Standard practice for cleaning concrete
ASTM D4259 - Standard practice for abrading concrete Polycoat Tuffshield II HAR 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.
ICRI 03732 - Concrete surface preparation Both Side-A and Side-B materials should be sprayed at a
WOOD minimum of 2000 psi and at temperatures above 150°F (66°C).
All wood should be clean, dry and free of any knots, splinters, oil, Adequate pressure and temperature should be maintained
grease or other contaminants. Splintered or rough areas should be at all times.
sanded. Knots should be repaired using Polycoat Products PC-260
with sand. Upon full cure of the repair agent, prime the entire surface Polycoat Tuffshield II HAR should be sprayed in smooth,
intended for coating. multidirectional passes to improve uniform thickness and
appearance.
STEEL (ATMOSPHERIC AND IMMERSION EXPOSURE) Storage
Remove all oil, grease, weld spatters and round off any sharp edges ®
from surface. Minimum surface preparation is Near White Metal Blast Polyeuro 8245 has a shelf life of one (1) year from date of
Cleaning per SSPC-SP10/NACE 2. Optimum surface profile is 2-3 mils. manufacture in original, factory-sealed containers when stored
Prime and shoot Tuffshield 801 on to any bare metal the same day indoors at a temperature between 60-95°F (15-35°C).
as it is cleaned to minimize any potential flash rusting. Aluminum: Side-A and Side-B drums are recommended to be stored
Aluminum should be blasted with aluminum oxide or sand, and not above 60°F (15°C). Avoid freezing temperatures.
with steel or metal grit. Excessive blasting may result in a warped Store drums on wooden pallets to avoid direct contact with
or deformed surface. After blasting, wash aluminum with a commer- the ground. If stored for a long period of time, rotate Side-A
cially available aluminum cleaner. Allow to dry, then prime. and Side-B drums regularly.
BRASS AND COPPER

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