DESCRIPTION AND USES
Rust-Oleum® Moisture Stop penetrates into concrete and reacts with the free calcium and water to form a gel in cracks, pores and capillaries to protect against the ingress of water and contaminants. This allows surfaces that were previously uncoatable, due to moisture, to be coated.
Moisture Stop is suitable for use on bare concrete and masonry surfaces, such as garage floors, driveways, sidewalks, stairs, patios, pool decks, basements, retaining walls and cinder block walls. It can be used as a curing agent on newly poured concrete within 28 days. Do not use on asphalt.
PRODUCT FEATURES
- Prevents moisture from coming through concrete floors
- For use on concrete prior to coating
- Strengthens & seals from the inside out
- For interior and exterior use
PRODUCT APPLICATION
READ ALL INSTRUCTIONS CAREFULLY BEFORE STARTING PROJECT.
TESTING CONCRETE FOR MOISTURE
Apply a 2’x2’ sheet of plastic to the garage floor. Tape down the edges with duct tape and let set for 24 hours. If water droplets form on the inside of the plastic or concrete appears wet (darker in color), moisture is trapped in the floor and Rust-Oleum Moisture Stop should be used prior to coating.
SURFACE PREPARATION
Proper surface preparation is critical to achieve best results. Remove any oil or grease with Rust-Oleum Cleaner & Degreaser (sold separately). Scrub spots thoroughly with a stiff bristle brush or broom. Rinse thoroughly with fresh water, preferable with a power washer. Repeat as necessary to completely clean and rinse. Allow to thoroughly dry. If the floor will be coated, use Rust-Oleum Clean & Etch and follow with Rust-Oleum Moisture Stop.
APPLICATION
Moisture Stop is ready to use. Do not thin. Use only when air (ambient) temperature is between 50-90°F (10-32°C) and the relative humidity is below 85%. Shake the container vigorously for 30-45 seconds. Completely saturate the surface at 150-200 square feet per gallon, using a low pressure sprayer or by pouring the product directly on the floor. Move the product around on the floor with a stiff bristle broom or squeegee to work the product into the floor. Using a hose or sprayer, mist the surface with water to keep the floor wet for 30-45 minutes. After 45 minutes, squeegee or broom the excess moisture from the surface.
IMPORTANT: Wait a minimum of 2 hours, then flush the surface with water and squeegee to a surface dry condition. Failure to flush the surface will result in the appearance of efflorescence and will require the use of Rust-Oleum Efflorescence Remover (sold separately).
COVERAGE
On new concrete, each gallon will cover 200 square feet per gallon. On old concrete, each gallon will cover up to 150 square feet per gallon. Areas with crazing (fine cracks on the surface) may take two applications.
DRY TIME
Dry time is based on 70°F and 50% relative humidity. After flushing the surface, the concrete floor is ready for foot traffic after 2 hours and vehicle traffic after 12 hours. Allow 24 hours before staining, sealing or coating.
CLEAN-UP
Wash tools and equipment with soap and warm water. Properly dispose of all soiled rags and protect unused product from freezing.
CAUTION: KEEP OUT OF REACH OF CHILDREN – DO NOT TAKE INTERNALLY.