(NOTE: Painted surfaces must be sound, washable and firmly adhered to the substrate. o Application of Bonding Agent : Apply Plaster - weld uniformly using brush roller, or spray to form a continuous pink film over the entire surface. Form release agents, curing compounds, hardeners, and sealers must be compatible with Plaster - weld. Packaging: Plaster - weld is available in 55 gallon drums, 5 gallon pails, gallon and quart containers.Ĥ Preparation & Execution: o Surfaces to receive Plaster - weld MUST BE STRUCTURALLY SOUND AND CLEAN, free from loose material, dust, dirt, oil, grease, wax, loose paint, mildew, rust, laitance, or efflorescence. Coverage: Plaster - weld covers approximately 300 to 400 square feet per gallon, depending on method of application, temperatures, porosity and texture of the substrate. Non-deteriorating bond retains strength and flexibility. Life Expectancy: Lab tested and field proven. o Toxicity: Enclosed mice exposed to 30 cc volatized Bonding Agent for 1 hr. o Freeze-Thaw Stability: 5 cycles freeze (-10 degrees F and thaw). o Temperature Range: ASTM C-109 (specimens brought to 35 degrees F for 1 hr.)ģ, then to 310 degrees F for 2 hrs). In all cases failure occurred in the cementitious material, not in the bond. Tensile Bond Strength: ASTM C-631 (pulling apart bonded cement briquet halves). Do not apply over water soluble paints, ie. Plaster - weld can be used over paints having oil, rubber, or vinyl bases, and over silicone-treated surfaces, as well as latex paints. Plaster - weld prepares the surface to allow you to Plaster directly to concrete over electric radiant heat cable, and to bond cement mortar beds to smooth concrete for installation of rigid foam installation.Ģ Concrete, brick, block, glass, ceramic tile, wallboard, metals ( sheet lead in x-ray rooms) and marble are suitable surfaces. Uses: Designed for interior use only, Plaster - weld provides high performance Bonding of one-coat finish Plaster and/or two and three coat work to concrete ceilings, walls, columns, beams, and other structurally sound surfaces. casien and calcimine paints), and silicone.1 Plaster - weld Plaster Bonding Agent Description : Plaster - weld The original Plaster Bonding Agent is a patented formulation incorporating polyvinyl acetate homopolymer. Weld-Crete® is also used for: bonding setting beds for ceramic tile bonding Portland cement plaster and stucco mixes and to bond to surfaces such as brick, block, tile, marble, metal, glass block, soundly adhered paint (non-soluable in water, i.e. Use Weld-Crete’s® open time to your advantage in bonding to concrete shear walls when you need a time lapse between application of bonding agent, placement of reinforcement steel, placement of formwork and placement of concrete. Weld-Crete® can be "painted on" in a single application 1 hour to 10 days prior to concrete placement. For exterior and interior use, Weld-Crete® will bond new concrete, Portland cement plaster and cementitious mixes to structurally sound concrete floors, walls, columns, beams, steps and ramps. The original chemical concrete bonding agent, Weld-Crete® incorporates polyvinyl acetate homopolymer in a patented formulation. Weld-Crete® bonds new concrete, stucco, tile setting beds and terrazzo to any structurally sound surface, interior or exterior.
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