RUST-OLEUM ROC-246 790 Synthetic Roof Coating User Manual

ROC-246 790 Synthetic Roof Coating
User Manual

DESCRIPTION AND USES

Rust-Oleum® 790 Synthetic Silicone Roof Coating is a non- fibered, semi-gloss, water-based acrylic roof coating which is specially formulated with a fluoro- polymer resin. The  790 coating is VOC compliant as a roof coating and is asbestos free. 790 Coating is used as a semi-gloss finish coat over the water- based acrylic roof and wall coatings and other approved coatings and substrates as recommended by Rust-Oleum, such as granule surfaced modified bitumen membranes. 790 coating provides long-term color-fast performance under constant solar exposure, such as those conditions found on roofs and exterior building walls. 790 coating also offers superior resistance to dirt pickup.
790 coating has been tested for reflective properties according to the standards of the Cool Roof Rating Council (CRRC) and is listed in the CRRC Rated Products Directory.
For use on metal roofs, concrete, modified bitumen, built-up, and weathered single-ply roofing.

PRODUCT FEATURES

• Stays white 3X longer than silicone
• 88% reflectivity
• Resists rain & ponding water in 1 hour
• Cool Roof technology
• 700% elasticity, resists cracking

PRODUCTS

PRODUCT APPLICATION

SURFACE PREPARATION
All surfaces must be clean and free from dirt, grease, oil, loose granule, loose paint, rust, excess chalk, and other foreign matter, which could prevent proper adhesion. This is best accomplished using a high-pressure wash of at least 2,000 psi. A surface cleaner shall be used to remove all grease or oily deposits. Remove all dirt, dust, and other loose debris from the roof. The area to be coated must be a clean, sound, and dry surface.
WARNING! If you scrape, sand, or remove old paint from any surface, you may release lead paint dust. LEAD IS TOXIC. EXPOSURE TO LEAD DUST CAN CAUSE SERIOUS ILLNESS, SUCH AS BRAIN DAMAGE; ESPECIALLY IN CHILDREN. PREGNANT WOMEN SHOULD ALSO AVOID EXPOSURE. Wear a NIOSH-approved respirator to control lead exposure. Clean up carefully with a HEPA vacuum and a wet mop. Before you start, find out how to protect yourself and your family by contacting the National Lead Information Hotline at 1-800-424-LEAD or log on to www.epa.gov/lead.

APPLICATION
An adhesion test may be required. Consult with your Rust-Oleum representative.
Mechanical mixing is recommended. Ensure the product is consistent in appearance and viscosity. Avoid entraining air when mixing. Install product using one of the approved application methods evenly at the recommended coverage rate. Use wet mil gauges to monitor coverage rates throughout the application.
Two coats are recommended. Applying the second coat after the first coat will support foot traffic without tracking. Avoid foot traffic on the final coat for 24 hours. For best results, apply the second coat in a direction that is perpendicular to the first coat. For spray application, take necessary precautions to avoid overspray. 790 can be sprayed, rolled, or brush applied. If rolling, use medium nap polyester. If brushing, use bristle, nylon/polyester, or nylon. See below for spray equipment recommendations.

SPRAY EQUIPMENT RECOMMENDATION
Airless Spray: Pneumatic, hydraulic, or electric pump with a minimum 2,000 psi material output pressure. Reversible spray tip with a 0.017’’ to 0.025’’ orifice and a 40° to 60° spray fan. Material spray lines must be properly rated for the maximum working pressure of the pump being used.

Fan
Width”| 0.39| 0.| 0.| 0.| 0.| 0.
---|---|---|---|---|---|---
10-12″| 539| 543| 547| 555| 547| 559
12-14″| 639| 643| 647| 651| 647| 659
14-16″| 739| 743| 747| 751| 747|
16-18″| 839| 843| 847| 851| 847|
Flow| 1.60| 2.| 2.| 3.| 2.| 4.
Rate| gpm| gpm| gpm| gpm| gpm| pm

DRY & RECOAT TIMES
Dry and recoat times are based on 77°F (25°C) and 50% relative humidity. Dry times increase at cooler temperatures.
Dries to the touch in 6 hours; allow minimum 24 hours recoat. Environmental or site-specific conditions may require variations in cure times.

COVERAGE
Apply two coats at 0.75 gal./100 square feet (1.6 m 2/L) (12 wet mils) per coat for a total application rate of 1.5 gal./100 square feet (3.2 m 2/L).

CLEAN-UP
Soap and water. Wipe up splatters before they dry. Follow the equipment manufacturer’s directions to clean spray equipment.

LIMITATIONS
Surfaces must be clean and free of dirt, dust, and other contaminants. Not intended for use in ponded areas. Do not apply unless temperatures are at least 45°F (7°C) and rising.  Do not apply if temperatures are expected to drop below 45°F (7°C) within 48 hours of application. Do not apply to wet surfaces. Do not apply unless the ambient and surface temperatures are at least 5°F (-15°C) above the dew point. Do not apply when freezing temperatures are expected within 48 hours after application. Do not apply if rain is expected within 12 hours. If temperatures drop below 60°F (15°C), do not apply if rain is expected within 24 hours.
Store container at temperatures above 32°F (0°C). Do not allow the container to freeze. Store container indoors in a heated area. Do not apply over hot applied asphalt or coal tar pitch flood or glaze coats.

PERFORMANCE CHARACTERISTICS

ELONGATION
METHOD: ASTM D2370
TYPICAL RESULT: 395%

TENSILE STRENGTH
METHOD: ASTM D370
TYPICAL RESULT: 393 psi

ADHESION
METHOD: ASTM D1876
TYPICAL RESULT:
Granulated Cap Sheet (No primer) 5.20 lbf/in
Granulated Cap Sheet (SP Primer) 6.08 lbf/in
Smooth MB (No Primer) 2.73 lbf/in
Smooth MB (SP Primer) 5.59 lbf/in

DENSITY @77°F (25°C)
METHOD: ASTM D1475
TYPICAL RESULT: 9.4 lbs/gal (1.12 kg/L)
GLOSS @ 60°
METHOD: ASTM D523
TYPICAL RESULT: 60.5
VISCOSITY @ 77°F (25°C)
METHOD: ASTM D2196
TYPICAL RESULT: 15,000 cP (15 Pass)
SRI-SOLAR REFLECTIVE INDEX
METHOD: ASTM E1980
TYPICAL RESULT: 111 – Initial 102 – 3 Year Aged

PHYSICAL PROPERTIES

| 790 SYNTHETIC ROOF COATING
---|---
Resin Type| Acrylic. PVC. Fluoropolymer
Pigment Type| Titanium Dioxide
Solvents| Water
Weight| 9.4 lbs./gal
Solids| By Weight| 48.%
By Volume| 42.%
Volatile Organic Compounds| <50 g/I
Recommended Dry Film Thickness (DFT) Per Coat| Varies, substrate-dependent
Wet Film to Achieve DFT (Unthinned Material)| Varies, substrate-dependent
Practical Coverage at Recommended DFT (assumes 15% material loss)| Apply two coats at 0.75 gal./100 square feet (1.6 m2/L) (12 wet mils) per coat for a
the total application rate of 1.5 gal./100 square feet (3.2 m2/L).
Dry Times at 77°F (25°C) and 50% Relative Humidity| Touch| 6 hours
Recoat| After 24 hours
Shelf Life| 12 months in unopened containers when stored properly
WARNING| PROTECT FROM FREEZING
Safety Information| For additional information. see SDS

The technical data and suggestions for use contained herein are correct to the best of our knowledge and offered in good faith. The statements of this literature do not constitute a warranty, express, or implied, as to the performance of these products. As conditions and use of our materials are beyond our control, we can guarantee these products only conform to our standards of quality, and our liability, if any, will be limited to the replacement of defective materials. All technical information is subject to change without notice.

Rust-Oleum Corporation
11 Hawthorn Parkway
Vernon Hills, Illinois 60061
Phone: 866∙585∙8430
www.rustoleum.com
Form: ARJ-2370
Rev.: 033022

References

• Rust-Oleum | Spray Paint, Wood Stains, Floor Coatings and More

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