Distribute a 3/8-inch thick layer of plaster over the hole and. Concrete, brick, block, glass, ceramic tile, wallboard, metals (e.g. After letting the first coat dry for 24 hours, use a spray bottle to dampen the area with water. 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 insulation. To make a plaster adhesive, mix 1 part water to 1 part. Designed for interior use only, the 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. On porous surfaces, Weldbond will be dry in about an hour, but you can. The skim coat and the surface of the plaster weld flowed together, turned pink (the color of Plaster Weld) and proceeded to slump on the wall as if the skim coat had been applied to a. The original chemical plaster bonding agent is a patented formulation incorporating polyvinyl acetate homopolymer. The instructions state that you can apply wet plaster to the Plaster Weld in just one hour after application of the Plaster Weld, so 24 hours seemed adequate. Plaster-Weld bonds new plaster to any clean, structurally sound, interior surface.
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