DESCRIPTION AND USES
Zinsser SmartPrime is a water-based modified acrylic primer/sealer, stain killer and bond coat. This product provides the characteristics of an oil-based product in an all-purpose water-based interior/exterior primer. SmartPrime was developed for professional and commercial applications, combining stain blocking power, fast-dry convenience, excellent flow and leveling, and excellent adhesion to glossy surfaces.
It is suitable for use on residential, institutional or commercial use in schools, hospitals, hotels, nursing homes, restaurants, etc. Apply to interior and exterior walls, ceilings, doors, trim, fascia, soffits, foundations, railings, and related paintable surfaces. SmartPrime adheres to wood, plaster, concrete, gloss enamels, hardboard, glass and tile.
For interior surfaces, apply to new and previously painted drywall, plaster, wood (pine, fir, cedar, redwood, plywood), metal (aluminum, stainless steel, galvanized metal), vinyl, PVC, fiberglass and masonry (stucco, concrete block, concrete, brick). For exterior surfaces, apply to new or previously painted wood (pine, fir, cedar, redwood, T-111, plywood, pressure-treated wood), hardboard, glass, metal (aluminum, stainless steel galvanized metal), PVC, rigid plastics, aluminum and vinyl siding, fiberglass and masonry (stucco, concrete block, concrete, brick).
SmartPrime penetrates to seal porous surfaces to provide a smooth and even finish so topcoat paints have better coverage and more consistent sheen. Smart Prime blocks stains from water, smoke, cedar or redwood bleed, grease, handprints, asphalt, crayon, graffiti and rust stains.
MPI #6, #39, #50, #137, #149 Certified. Refer to the MPI website for the most current listing of MPI certified products.
PERFORMANCE CHARACTERISTICS
- Bonds to glossy surfaces without scuff sanding
- Formulated with proprietary stain-blocking resins
- Dried film is mold and mildew resistant
- Bonds to moderately chalky surfaces
- Dries in minutes, can be recoated in 1 hour
PRODUCT APPLICATION
SURFACE PREPARATION
Surfaces should be clean, dry, sound and free of dust, dirt, excessive chalky material, grime, grease, oil, wax, mildew, wallpaper adhesive, or any contamination that may interfere with adhesion. If unsure of cleanliness, wash surface with an appropriate Krud Kutter® cleaner, ammonia, or a TSP substitute. Rinse thoroughly and allow to dry. Remove any peeling and/or unsound coatings. Sand any remaining paint film edges smooth with the surface. Remove existing stains by washing, sanding, scraping, etc. Countersink exposed nail heads, spot prime and fill all nail holes and gouges with Ready-Patch® spackling compound or equally suitable material. Lightly sand exposed exterior wood with 80 to 100 grit sandpaper to remove loose or weathered wood fibers.
NEW DRYWALL
New drywall must be wiped down with a damp cloth to remove residual joint compound dust prior to priming.
PLASTER & CONCRETE
New plaster must age 30 days before application of SmartPrime. Concrete, plaster, masonry and related surfaces must be fully cured before priming.
DAMAGED DRYWALL
Damaged drywall should be repaired prior to priming. Spot prime area of torn drywall facing paper or exposed gypsum core with GardZ® Problem Surface Sealer and then skim coat with drywall mud before priming the total area with SmartPrime.
MOLD & MILDEW
Remove interior mildew stains by washing the surface with a solution of one cup household bleach in a gallon of water. Follow label instructions and personal protection recommendations on the MSDS. Do not add ammonia or other cleaning products to the bleach solution. Kill exterior mildew with Jomax® House Cleaner and Mildew Killer. If concerned about mold and mildew behind walls, underneath flooring, in ventilation systems or other unseen areas, contact a professional who specializes in mold and mildew remediation. For commercial buildings and schools, follow appropriate guidelines for mold removal.
STAIN BLOCKING
Blocks stains from water, smoke, cedar or redwood bleed, grease, handprints, asphalt, crayon, graffiti and rust stains. Make sure all water leaks are repaired before applying SmartPrime to a water stain. If the area requires patching, apply SmartPrime before and after applying the spackling or patching compound. After applying SmartPrime to the stain, the stain may appear in the primer film. This is normal. The stain will be locked in the primer film and will not bleed into the topcoat. Allow 2 hours to dry for interior stain blocking and overnight for bare cedar or redwood. Certain applications may require a second coat of primer. Prime severe water and smoke stains and block associated odors with Zinsser B-I-N Shellac Base Primer Stain Blocker.
METAL SURFACES
Use SmartPrime to prime uncoated ferrous metals, galvanized metal, aluminum, or previously painted ferrous metals.
WOOD
Lightly sand exposed exterior wood with 80-100 grit sandpaper to remove loose or weathered wood fibers. For new Cedar and Redwood applications, allow SmartPrime to dry 24 hours before painting or topcoating. Sand interior bare wood surfaces using medium to fine grit sandpaper.
LIMITATIONS
Smart Prime is not recommended for application to floors, decks, roof surfaces or any surface subject to immersion or prolonged contact with water.
APPLICATION
Apply only when air, material, and surface temperatures are between 50-90ºF (10-32ºC) and the relative humidity is below 85%. Substrate moisture should not exceed 12%.Thoroughly mix to ensure any settled pigment is redispersed before using. In most cases only one coat is necessary to prime most surfaces. If excessive absorption occurs over very porous substrates a second coat may be necessary. Spot priming is recommended only under high hiding topcoat finishes. For best results, prime entire surface before painting. Keep container closed when not in use. Apply with a synthetic (nylon, polyester or blend) bristle brush, roller, or airless sprayer. Follow manufacturer's instructions when using spray equipment. For airless spraying use a .017" tip at 2000 to 2500 psi. If a conventional sprayer is used, spray at 50-60 psi. Wear NIOSH approved respirator and provide adequate ventilation.
THINNING
If thinning is necessary, add no more than 10 fluid ounces of clean water per gallon and mix thoroughly. Thinning the primer may affect its stain-blocking properties.
TINTING
SmartPrime may be tinted with up to 2 ounces of universal colorant per gallon. Tinting the primer toward the color of the topcoat helps hide in one coat.
DRY TIME
Dries to the touch in 30 minutes, can be recoated in 1 hour. The primer film develops full adhesion and hardness after it cures in 7 days. Lower temperatures, higher humidity, and the addition of tint will prolong dry and cure time. Allow more time at cooler temperatures.
CLEAN-UP
Clean up spills and paint drips with detergent and warm water. If spills or drips have dried, use denatured alcohol or ammoniated detergent to soften and remove primer. Wash application tools in detergent and warm water immediately use. Follow equipment manufacturer’s directions to clean spray equipment. Dispose of unused or unwanted product in accordance with local laws regulating water-based coatings.