DESCRIPTION AND USES
Rust-Oleum Professional Undercoating is an easy to use, black rubberized protective coating. It provides corrosion protection from water, salt and other chemicals. It helps deaden sound and provides a barrier from rust on cars, trucks, trailers and other recreational vehicles. For use on bare or primed metal including underbody and wheel wells of cars, trucks, trailers and other recreational vehicles. Not for use on surfaces that will come in direct contact with heat or high temperatures such as mufflers, exhaust components, etc. Professional Undercoating features an advanced spray system that allows you to spray at any angle, even upside down for those hard to reach areas. A comfort spray tip with a wider finger pad reduces fatigue caused by continuous spraying.
PRODUCT APPLICATION
SURFACE PREPARATION
Bare Metal or Sound Rust Surfaces: Remove all dirt, grease, oil, salt and chemical contaminants by washing the surface with a commercial detergent, or other suitable cleaning method. Rinse with fresh water and allow to thoroughly dry. Remove loose paint and rust with a wire brush or 120-220 grit sandpaper. Remove all sanding dust with a clean cloth. Protect and mask off all surrounding areas to prevent overspray. For best results, spot prime bare or rusted surfaces.
Previously Painted Surfaces: Thoroughly clean the area with a commercial detergent, or other suitable cleaning method. Rinse with fresh water and allow to thoroughly dry. Note: Cleaning is recommended before and after wire brushing or sanding. Use a wire brush to remove any loose or peeling paint. Sand the surface with 120-220 grit sandpaper. The use of 249321 Primer Sealer or any of the sandable primers (249419 Red, 252472Light Gray, or 249415 Gray) will enhance corrosion resistance and improve hiding.
PAINTING CONDITIONS
Use outdoors or in a well-ventilated area such as an open garage. Apply when temperature is between 50-90°F (10- 32°C) and humidity is below 85% to ensure proper drying. Avoid spraying in very windy, dusty conditions. Cover surrounding area to protect from spray mist.
APPLICATION
Shake can vigorously for one minute after the mixing ball begins to rattle. If mixing ball fails to rattle DO NOT STRIKE CAN. Contact Rust-Oleum. Shake often during use. Hold can upright 12-16" from surface and spray in a steady backand-forth motion, slightly overlapping each stroke. Keep the can in motion while spraying. Remove any overspray from the auto finish immediately. For best results, apply 2 coats, allowing 1-2 minutes between coats. Do not use near open flame.
DRY & RECOAT
Dry and recoat times are based on 70°F and 50% relative humidity. Dries to touch in 10 minutes. Allow more time in cooler temperatures. The surface can be recoated within 1 hour or after 24 hours. Allow 72 hours for full cure.
CLEAN-UP
Wipe off tip when finished. Clean up wet paint with xylene or mineral spirits. Properly discard empty container. Do not burn or place in home trash compactor.
CLOGGING
If the valve clogs, twist and pull off spray tip and rinse in a solvent such as mineral spirits. Do not insert any object into can valve opening.