Silicone 412 is a single component elastomeric waterproofing moisture curing silicone coating.
Standard specification for liquid applied silicone coating used in spray polyurethane foam roofing single ply restoration and for top coating several of Weatherstar’s systems.
USAGE
Silicone 412 is designed as a protective coating for spray-in-place polyurethane foam, metal, concrete, wood, built-up roofing and most single ply’s.
APPLICATION
| MIXING: |  |
Mix before application to assure uniform color and consistency. |
| APPLICATION: | Apply by brush or roller as received. For spray application, use as received. For cold weather application, keep material stored above 65°F (18°C). Recoat time is between 4 to 48 hours. Longer recoat times will result in poor intercoat adhesion and delamination. |
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| CLEAN-UP: | Clean spray equipment with Mineral Spirits. Recirculate through lines and gun until residual is removed. |
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| CURE: | Applied coating will cure in 1 to 4 hours depending on temperature and humidity. |
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| CAUTION: | Silicone 412 is considered combustible. Keep away from heat, sparks and open flame. Avoid prolonged breathing of vapors and prolonged or repeated skin contact. Use only with adequate ventilation. |
APPLIED PRODUCT DATA
| Weatherability: | Excellent durability, color stability and chalk resistance. | |
| Chemcial Resistance: | Excellent solvent and chemical resistance. | |
| Tensile: | ASTM D-412 Strength: 550 ± 10 psi (3.79 ± .07 MPa) Elongation: 150 % ± 10 Permanent Set At Break: Approx. 1% |
Silicone 412 immersed in Water @150°F(66°C) for 1 year per ASTM D-471: Strength: 463 psi (3.19MPa) Elongation: 125% Permanent Set At Break: 0% |
| Tear Resistance: | ASTM D-624 DIE C Lb./In. 21 pli (3.8 kg(f)/cm) |
11 pli (2.0 kg(f)/cm) |
| Hardness: | ASTM D-2240 55 Shore A | 56 Shore A |
| Water Vapor Permeability: | ASTM E-96 5.3 perms Procedure B at 0.5 mm (20 mils) thickness ± 10% Minimum permeance requirement is 2.5 U.S. perms |
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| Adhesion: | Excellent adhesion to polyurethane foam and other substrates. |
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| Flammability: | ASTM E108 Class A | |
| Reflectance: | ASTM C-1549 White 0.88 | |
| Emittance: | ASTM C-1371 White 0.87 | |
PACKAGED PRODUCT DATA
| Colors: | White and Gray | ||||
| Coverage: | Depends on substrate | ||||
| Solids: |
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| V.O.C. | Volatile organic compounds content is 48 grams per liter | ||||
| Flash Point: | ASTM D-56, TCC Above 179oF (82°C) | ||||
| Storage Stability: | One year from date of manufacture when stored in sealed containers below 75oF (24°C). |
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| Cleaner: | Mineral Spirits | ||||
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