READ ENTIRE LABEL BEFORE APPLYING
DESCRIPTION AND USES
OKON® Graffiti Barrier Coat (GBC) is a clear, single component, water-based, non-yellowing, low VOC acrylic micro-emulsion coating that prevents aerosol paint and markers from penetrating and permanently staining a variety of architectural surfaces including concrete, brick, plaster, metal and painted surfaces.
GBC is recommended for use on concrete block, stone, wood, aggregate panels, EIFS, new paint1, brick, metal, fiberglass, cast concrete, cement, plaster, stucco and previously painted surfaces.
1 Allow paint to completely cure before topcoating with Graffiti Barrier Coat – 14 days.
PRODUCT FEATURES
- Prevents permanent stains caused by spray paints and markers
- Protects painted and unpainted surfaces
- Suitable for interior and exterior use
- Water-base, low VOC, non-yellowing
SURFACE PREPARATION
OKON Graffiti Barrier Coat can be applied to surfaces that are clean (free of dirt and oils), dry and sound. Surfaces can be slightly damp, but must be internally dry.
Concrete – New concrete must cure for 28 days prior to coating. Where specified, water-repellents and water-proofing membranes should be applied a minimum of fourteen days prior to applying GBC. Clean exterior surfaces by power washing to remove dust, mildew, form releases or other foreign matter. The surface of concrete and mortar joints must be hard and firm, not loose or sandy. Remove efflorescence with sulfamic or dilute muriatic acid. Spot cleaning with acid may cause uneven porosity and blotchy appearance. Rinse the surface thoroughly after chemical cleaning. Un-rinsed acid salts may cause whitish blotches to appear. Allow washed surfaces to dry three days prior to coating.
PRODUCT APPLICATION (cont.)
SURFACE PREPARATION (cont.)
Painted Surfaces – paint must cure a minimum of 14 days prior to coating with GBC. Clean painted surfaces to remove dirt, chalk, mold and algae. Glossy surfaces should be sanded to ensure adhesion. A test is always recommended
WARNING! If you scrape, sand, or remove old paint, you my release lead 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
Graffiti Barrier Coat is a low viscosity, ready-to-use product. Stir, do not shake. Apply when air and surface temperatures are between 50-90°F (10-32°C) and the relative humidity is below 85%. It can be applied by brush, roller or garden-type sprayer, but is best applied using HVLP or airless spray. Apply multiple thin coats at the recommended application rate to avoid runs. When rolling, use a high quality, lint-free ⅜” nap roller cover. It appears milky-white when first applied but dries water-clear to a satin finish, depending on the texture of the substrate and number of coats applied.
Spray Application – When using airless spray, use a small tip (0.011) at the lowest possible pressure to maintain an acceptable spray pattern. When using HVLP, use settings intended for fine finish lacquers or varnishes. Apply a light tack coat and allow it to flash-off before applying a thin wet coat using a cross-hatch pattern. Immediately, back brush or roll drips and runs. In hot weather, where possible, lightly spray the surface with water to cool the surface to prevent flash drying. Do not stop or interrupt the application in the middle of the wall. Stop application only at expansion joints, walls or breaks defined by masking tape. Do not allow puddles, drips or runs to dry on the surface. Protect adjacent areas from overspray.
DO NOT APPLY if rain or freezing temperatures are forecast in 12 hours after application.
COVERAGE A minimum of two coats on non-porous and three coats on porous surfaces is recommended. The spread rate of GBC will vary with the porosity and texture of the surface. Always apply material to a test area to establish compatibility and spread rate.
CLEAN UP Clean hands and tools with soapy water. Drips and runs that have dried may be removed using a strong solvent within 24 hours after application. After that time sanding may be necessary.
LIMITATIONS Some cleaning methods may make it necessary to reapply GBC to prevent future staining. GBC may help prevent water penetration due to wind driven rain but it not intended to be used by itself for damp-proofing or waterproofing. OKON Graffiti Barrier Coat does not prevent graffiti from penetrating cracks or unsealed joints, or prevent damage caused by hydrostatic water pressure or efflorescence. A mock-up should always be performed and approved by the property owner.
KEEP FROM FREEZING AND KEEP OUT OF THE REACH OF CHILDREN.